chenzhen [Thu, 12 Jan 2017 09:18:47 +0000 (17:18 +0800)]
Revert "MALI: rockchip: upgrade midgard DDK to r14p0-01rel0"
This reverts commit
d1637ff80953fd46692f923f3ee7b656fb917081.
Change-Id: Ib99bae99fe7246142bfa7369b8e79ebbfae1e736
Signed-off-by: chenzhen <chenzhen@rock-chips.com>
Shawn Lin [Fri, 13 Jan 2017 01:56:51 +0000 (09:56 +0800)]
FROMLIST: arm64: dts: rockchip: add aspm-no-l0s for rk3399
Per the discussion of bug fix[1], we now actually
leaves the default clock choice for pcie phy is
derived from 24MHz OSC to guarantee the least BER.
So let's add aspm-no-l0s here and folks could delete
this property from their dts.
Change-Id: I5ee57a2e27d3751f6541fdf059e6745c26d0a6ef
[1] https://patchwork.kernel.org/patch/
9470519/
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
(cherr picked from https://patchwork.kernel.org/patch/
9477651/)
Shawn Lin [Thu, 12 Jan 2017 01:53:17 +0000 (09:53 +0800)]
UPSTREAM: PCI: rockchip: Disable RC's ASPM L0s based on DT "aspm-no-l0s"
Rockchip's RC produces a 100MHz reference clock but there are two
methods for the PHY to generate it:
(1) Use the system PLL to generate a 100MHz clock. The PHY will relock
it, filter signal noise, and output the reference clock. ASPM L0s
works correctly, but circuit noise issues make it difficult to pass
the TX compatibility test.
(2) Share the SoC's 24MHZ crystal oscillator with the PHY and force the
PHY's PLL to generate 100MHz internally. In this case, exit from
ASPM L0s sometimes fails due to a design error in the RC receiver
circuit. Even if we use extended-synch, the PHY sometimes fails to
relock the bits from FTS, which will hang the system.
We want the flexibility to use both clocking methods, so add a DT
property, "aspm-no-l0s". If that's present, disable L0s to avoid the
issues with case (2).
Change-Id: Iefbac055dc9d916815aace25f3558e0642e3522b
[bhelgaas: changelog]
Reported-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
(cherry picked from git.kernel.org/cgit/linux/kernel/git/helgaas/pci.git
commit
afc9595ea4770f0157ae06fb3acedff703e169b6)
Shawn Lin [Fri, 13 Jan 2017 01:44:14 +0000 (09:44 +0800)]
Revert "UPSTREAM: PCI: rockchip: Add quirk to disable RC's ASPM L0s"
This reverts commit
6c71bcdab9b48258ab496218581d035afb65e0dd.
As it was dropped from pci-next and we have another rework there.
Change-Id: Icaf9d7a7fbdca5ab39b550dd0a5031fd0d3770d0
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Jacob Chen [Thu, 12 Jan 2017 03:09:48 +0000 (11:09 +0800)]
MALI: rockchip: linux: upgrade to DDK r13p0-00rel0
Since r9p0 can't recover form error "DATA_INVALID_FAULT",
we have to update to r13p0.
Change-Id: Iac820870159def15dd4c214d0d98f81f81480340
Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com>
Mark Yao [Thu, 12 Jan 2017 01:33:49 +0000 (09:33 +0800)]
drm/rockchip: vop: wait for completion with timeout
Wait for completion forever is very dangerous, make system
die is very bad.
Change-Id: Ib447b9bbf3564b5107b33edec331d4925241fc45
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Mark Yao [Wed, 11 Jan 2017 09:30:10 +0000 (17:30 +0800)]
drm/rockchip: vop: fixup afbc flags on vop
Change-Id: Ia6ce813a1eb9f6aa1b9a76a0437e2cf11b1b403d
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Mark Yao [Tue, 20 Dec 2016 00:46:23 +0000 (08:46 +0800)]
drm/rockchip: mipi: move mode_set/commit to enable ops
enable/disable ops is more compatile to drm atomic framework.
fix mipi driver crash when resume:
[ 195.399833] PC is at drm_mode_vrefresh+0x0/0x78
[ 195.400249] LR is at dw_mipi_dsi_encoder_commit+0x2ec/0x424
[ 195.400749] pc : [<
ffffff800845ee7c>] lr : [<
ffffff800846f190>] pstate:
20000145
[ 195.529911] [<
ffffff800845ee7c>] drm_mode_vrefresh+0x0/0x78
[ 195.530421] [<
ffffff80084441e0>] drm_atomic_helper_commit_modeset_enables+0x168/0x190
[ 195.531126] [<
ffffff80084733b4>] rockchip_atomic_commit_complete+0x3c/0x14c
[ 195.531753] [<
ffffff8008473540>] rockchip_drm_atomic_commit+0x7c/0x9c
[ 195.532336] [<
ffffff8008467b60>] drm_atomic_commit+0x6c/0x84
[ 195.532849] [<
ffffff80084447fc>] drm_atomic_helper_connector_dpms+0xf4/0x154
[ 195.533481] [<
ffffff800845d21c>] drm_mode_obj_set_property_ioctl+0x148/0x204
[ 195.534113] [<
ffffff800845d318>] drm_mode_connector_property_set_ioctl+0x40/0x60
[ 195.534778] [<
ffffff800844dba4>] drm_ioctl+0x270/0x3fc
[ 195.535249] [<
ffffff80081b9180>] do_vfs_ioctl+0x4d0/0x5bc
[ 195.535739] [<
ffffff80081b92cc>] SyS_ioctl+0x60/0x88
[ 195.536194] [<
ffffff80080826f0>] el0_svc_naked+0x24/0x28
Change-Id: Ic80f364a4297e7318c3f0316dd4100737ad7ff6e
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Mark Yao [Wed, 11 Jan 2017 02:14:26 +0000 (10:14 +0800)]
drm/rockchip: vop: support overscan setting
Change-Id: I2213c7da45fd625d154a9bf11c79ec5608b06a0e
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Jacob Chen [Mon, 9 Jan 2017 10:44:39 +0000 (18:44 +0800)]
mali: utgard: Fix build issue
The following statement doesn't have consistent behaviour on all machines.
Since the driver is in-tree, we can assume GPL compliance
Change-Id: I5d993ba8f1b4002a1bcd20b8ac40f442269897a8
Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com>
Jacob Chen [Tue, 10 Jan 2017 08:20:53 +0000 (16:20 +0800)]
ARM: rockchip: clean folder
Change-Id: I5ab0d917dc79976a944b380ca3a77d823b6cae98
Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com>
Jacob Chen [Thu, 12 Jan 2017 01:18:12 +0000 (09:18 +0800)]
ARM: dts: rockchip: sort rk3288 dts by base adress
Change-Id: Ibfd497cd8a2dbdbfe4ccb6a35501451926e4fe7e
Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com>
Jacob Chen [Wed, 11 Jan 2017 06:45:57 +0000 (14:45 +0800)]
ARM: dts: rockchip: add ddr related node for rk3288
Add dmc,sram,noc nodes which are used for ddr function
Change-Id: I5798f7a2c444adf6940b44fe0cdadca8655e534e
Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com>
Jacob Chen [Tue, 10 Jan 2017 07:14:32 +0000 (15:14 +0800)]
ARM: rockchip: Convert resume code to C
This CL introduces the concept of "embedded blobs" for Rockchip, which
allows you to compile some C code into a binary blob that is linked
into the kernel. This binary blob is self contained and is intended
to run in cases where SDRAM (and thus the rest of Linux) isn't
available. Resume is a prime candiate for this as is the planned
DDRFreq code.
We convert the existing assembly resume code into C as proof that this
works and to prepare for linking in SDRAM reinit code.
Change-Id: I0ff109766cfd4b25bf65de9258631a07d2ebe1d5
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com>
Jacob Chen [Wed, 11 Jan 2017 06:42:19 +0000 (14:42 +0800)]
rockchip: pm: add deep sleep support for rk3288
This adds deep sleep support for rk3288 suspend & resume
It can suspend by "echo 1 > /sys/module/pm/parameters/deep_sleep &&
echo mem > /sys/power/state", and resume by power
Change-Id: Iff55f17dc74e27e37db8c8417a08d931f2767afe
Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com>
Jacob Chen [Wed, 11 Jan 2017 05:32:47 +0000 (13:32 +0800)]
arm: dts: rockchip: increase vdd log for rk3288-evb-act8846
1v is too low for ddr 533, gpu 600
Change-Id: I7dc4744b578573dd772803bc4f772f6a8ed0a133
Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com>
xubilv [Tue, 10 Jan 2017 07:01:49 +0000 (15:01 +0800)]
video: rockchip: edp: Solve the bug of asymmetric pd enable and disable
Change-Id: I626210fc3e63c076e402563393a388cbd25fdd74
Signed-off-by: xubilv <xbl@rock-chips.com>
Randy Li [Sat, 24 Sep 2016 18:50:17 +0000 (02:50 +0800)]
UPSTREAM: phy: Add reset callback for not generic phy
I forget to add a dummy function in case the CONFIG_GENERIC_PHY
is disabled.
Change-Id: Ic324387058ef260473fd4ad20ed43eff79044dfe
Signed-off-by: Randy Li <ayaka@soulik.info>
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
(cherry picked from
98430c7aad6a3fdedcc78a0d6780dabb6580dc38)
wjh [Wed, 11 Jan 2017 08:01:20 +0000 (16:01 +0800)]
HID: hid-rkvr: update TP input events
Change-Id: I9c72693ff6db1beccc4ed79fc01b33616fd8931d
Signed-off-by: wjh <wjh@rock-chips.com>
sean.huang [Tue, 10 Jan 2017 04:48:20 +0000 (12:48 +0800)]
OP-TEE: update optee_linuxdriver to match updated optee_os & optee_client
Match the optee_os version 1.5 or later.
Main update features:
1.Support 32-bit client working with 64-bit linux kernel.
2.Fix Shared Memory protection.
3.Add mutex to serialize tee-supplicant request.
4.Revert "rename tee-supplicant to tee_supplicant".
cherry-pick from 3.10
commit id:
5f6467dc09e8c00f7fa6a621b3aad7046ae84d48
Change-Id: I5c77ed85aa56e36d346be7c4462c5a15120df439
Signed-off-by: sean.huang <sean.huang@rock-chips.com>
Shawn Lin [Tue, 10 Jan 2017 07:59:26 +0000 (15:59 +0800)]
arm64: dts: rockchip: clean up emmc_phy
freq-sel, dr-sel and opdelay are obsolete now, so we
should remove them from the DT files to prevent the
spread of unused code.
Change-Id: Ibfa4fa225231a004913aa31aac475eb252e329c6
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Shawn Lin [Tue, 10 Jan 2017 07:55:35 +0000 (15:55 +0800)]
arm64: dts: rockchip: replace clkreqn with new cpm GPIO for rk3399-evb
We should convert to use cpm mode instead of L1 substate.
Fix it anyway.
Change-Id: I50fd43a1b15df6b8dc617783a1525ba0579b6a92
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Shawn Lin [Tue, 10 Jan 2017 07:47:54 +0000 (15:47 +0800)]
arm64: dts: rockchip: add pcie clkreq for cpm mode in rk3399.dtsi
Since we don't support L1 substate due to the errata of TRM,
let's instead add cpm mode if possible. Note that in cpm mode,
clkreq should be a GPIO and the EP will take over the ownship
of it and de-assert it when exiting from the low power mode.
Change-Id: I4d5542289c0118ba8702ad6b2783e6fad64828a1
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Frank Wang [Thu, 5 Jan 2017 06:44:16 +0000 (14:44 +0800)]
arm64: configs: rockchip_linux: enable usb-otg related config
This adds select below config for usb-otg:
CONFIG_USB_DWC2_DUAL_ROLE
CONFIG_USB_GADGET_DEBUG_FILES
CONFIG_USB_GADGET_VBUS_DRAW=500
CONFIG_USB_CONFIGFS_UEVENT
Change-Id: Ic4765eb59e187dbf4e20d26a76722a309021122c
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Frank Wang [Thu, 5 Jan 2017 06:38:23 +0000 (14:38 +0800)]
arm64: dts: rockchip: enable usb2-otg as peripheral for rk3328-evb
This adds set dwc2 mode as peripheral and enable for rk3328-evb.
Change-Id: Ic00e784ff4fdb466883689f8bfde995be13c20ce
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Frank Wang [Thu, 5 Jan 2017 06:34:47 +0000 (14:34 +0800)]
arm64: dts: rockchip: add usb2-otg nodes for rk3328
This patch adds usb2-otg nodes to support dwc2 driver for rk3328.
Change-Id: I23367ee116f1ac9a028ca6d60bdde68f9d71df72
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Frank Wang [Thu, 5 Jan 2017 07:08:57 +0000 (15:08 +0800)]
usb: dwc2: add multiple clock handling
Originally, dwc2 just handle one clock named otg, however, it may have
two or more clock need to manage for some new SoCs, so this adds
change clk to clk's array of dwc2_hsotg to handle more clocks operation.
Change-Id: I661297ef908d9eace2215205018fa94d12cea128
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Huang, Tao [Tue, 10 Jan 2017 09:57:03 +0000 (17:57 +0800)]
arm64: rockchip_defconfig: update by savedefconfig
Change-Id: Iba75aa98d0188c9edc62c59cbf0af8f3b2c71dff
Signed-off-by: Huang, Tao <huangtao@rock-chips.com>
Huang, Tao [Tue, 10 Jan 2017 07:57:54 +0000 (15:57 +0800)]
Merge branch 'linux-linaro-lsk-v4.4-android' of git://git.linaro.org/kernel/linux-linaro-stable.git
* linux-linaro-lsk-v4.4-android: (199 commits)
Linux 4.4.41
net: mvpp2: fix dma unmapping of TX buffers for fragments
sg_write()/bsg_write() is not fit to be called under KERNEL_DS
kconfig/nconf: Fix hang when editing symbol with a long prompt
target/user: Fix use-after-free of tcmu_cmds if they are expired
powerpc: Convert cmp to cmpd in idle enter sequence
powerpc/ps3: Fix system hang with GCC 5 builds
nfs_write_end(): fix handling of short copies
libceph: verify authorize reply on connect
PCI: Check for PME in targeted sleep state
Input: drv260x - fix input device's parent assignment
media: solo6x10: fix lockup by avoiding delayed register write
IB/cma: Fix a race condition in iboe_addr_get_sgid()
IB/multicast: Check ib_find_pkey() return value
IPoIB: Avoid reading an uninitialized member variable
IB/mad: Fix an array index check
fgraph: Handle a case where a tracer ignores set_graph_notrace
platform/x86: asus-nb-wmi.c: Add X45U quirk
ftrace/x86_32: Set ftrace_stub to weak to prevent gcc from using short jumps to it
kvm: nVMX: Allow L1 to intercept software exceptions (#BP and #OF)
...
Change-Id: I8c8467700d5563d9a1121c982737ff0ab6d9cdc9
Zhou weixin [Tue, 10 Jan 2017 03:35:42 +0000 (11:35 +0800)]
arm64: rockchip_defconfig: add alps trackpad support
Change-Id: Icbf54f457642b2541b441b9d74c18d1854e0f9d2
Signed-off-by: Zhou weixin <zwx@rock-chips.com>
Zhou weixin [Tue, 10 Jan 2017 03:15:25 +0000 (11:15 +0800)]
HID: hid-alps: add alps hid support
Change-Id: Id3eba69f18f0f6f3548a4be0430fee3ce8cce021
Signed-off-by: Zhou weixin <zwx@rock-chips.com>
Alex Shi [Tue, 10 Jan 2017 04:01:14 +0000 (12:01 +0800)]
Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android
Alex Shi [Tue, 10 Jan 2017 04:01:08 +0000 (12:01 +0800)]
Merge tag 'v4.4.41' into linux-linaro-lsk-v4.4
This is the 4.4.41 stable release
Huang Jiachai [Fri, 6 Jan 2017 02:52:59 +0000 (10:52 +0800)]
video: rockchip: fb: fix switch screen lead to splash screen
Change-Id: Ie4fe5d3d3dc010ee7c7c8b15b24f435798c5bc46
Signed-off-by: Huang Jiachai <hjc@rock-chips.com>
Huang Jiachai [Fri, 6 Jan 2017 02:52:59 +0000 (10:52 +0800)]
video: rockchip: fb: fix switch screen lead to splash screen
Change-Id: Ie4fe5d3d3dc010ee7c7c8b15b24f435798c5bc46
Signed-off-by: Huang Jiachai <hjc@rock-chips.com>
Shunqing Chen [Fri, 6 Jan 2017 07:07:33 +0000 (15:07 +0800)]
power_supply: bq25700: set default input voltage ane current when shutdown
Change-Id: Ibeeab7bf882e232be7285deee995c5a0dc3f641c
Signed-off-by: Shunqing Chen <csq@rock-chips.com>
Zhou weixin [Wed, 4 Jan 2017 02:28:59 +0000 (10:28 +0800)]
mfd: fusb302: fix connect adapter failed when reboot with adapter
The fusb PD should be reset to sync adapter PD signal after fusb
sent hard reset cmd.
Change-Id: Iad5f27cf4c017639c24000e73dc831a36dbb55ec
Signed-off-by: Zhou weixin <zwx@rock-chips.com>
wenping.zhang [Mon, 9 Jan 2017 05:55:20 +0000 (13:55 +0800)]
arm64: dts: rockchip: add usb2 phy tuning for rk3399 discrete vr.
add usb2 phy tuning function to enhance the usb signal for discrete vr device.
Change-Id: Iab4911610ccf488be723ce462527ecaeafe7e446
Signed-off-by: wenping.zhang <wenping.zhang@rock-chips.com>
Greg Kroah-Hartman [Mon, 9 Jan 2017 07:08:10 +0000 (08:08 +0100)]
Linux 4.4.41
Thomas Petazzoni [Wed, 21 Dec 2016 10:28:49 +0000 (11:28 +0100)]
net: mvpp2: fix dma unmapping of TX buffers for fragments
commit
8354491c9d5b06709384cea91d13019bf5e61449 upstream.
Since commit
71ce391dfb784 ("net: mvpp2: enable proper per-CPU TX
buffers unmapping"), we are not correctly DMA unmapping TX buffers for
fragments.
Indeed, the mvpp2_txq_inc_put() function only stores in the
txq_cpu->tx_buffs[] array the physical address of the buffer to be
DMA-unmapped when skb != NULL. In addition, when DMA-unmapping, we use
skb_headlen(skb) to get the size to be unmapped. Both of this works fine
for TX descriptors that are associated directly to a SKB, but not the
ones that are used for fragments, with a NULL pointer as skb:
- We have a NULL physical address when calling DMA unmap
- skb_headlen(skb) crashes because skb is NULL
This causes random crashes when fragments are used.
To solve this problem, we need to:
- Store the physical address of the buffer to be unmapped
unconditionally, regardless of whether it is tied to a SKB or not.
- Store the length of the buffer to be unmapped, which requires a new
field.
Instead of adding a third array to store the length of the buffer to be
unmapped, and as suggested by David Miller, this commit refactors the
tx_buffs[] and tx_skb[] arrays of 'struct mvpp2_txq_pcpu' into a
separate structure 'mvpp2_txq_pcpu_buf', to which a 'size' field is
added. Therefore, instead of having three arrays to allocate/free, we
have a single one, which also improve data locality, reducing the
impact on the CPU cache.
Fixes: 71ce391dfb784 ("net: mvpp2: enable proper per-CPU TX buffers unmapping")
Reported-by: Raphael G <raphael.glon@corp.ovh.com>
Cc: Raphael G <raphael.glon@corp.ovh.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Al Viro [Fri, 16 Dec 2016 18:42:06 +0000 (13:42 -0500)]
sg_write()/bsg_write() is not fit to be called under KERNEL_DS
commit
128394eff343fc6d2f32172f03e24829539c5835 upstream.
Both damn things interpret userland pointers embedded into the payload;
worse, they are actually traversing those. Leaving aside the bad
API design, this is very much _not_ safe to call with KERNEL_DS.
Bail out early if that happens.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ben Hutchings [Thu, 24 Nov 2016 22:10:23 +0000 (22:10 +0000)]
kconfig/nconf: Fix hang when editing symbol with a long prompt
commit
79e51b5c2deea542b3bb8c66e0d502230b017dde upstream.
Currently it is impossible to edit the value of a config symbol with a
prompt longer than (terminal width - 2) characters. dialog_inputbox()
calculates a negative x-offset for the input window and newwin() fails
as this is invalid. It also doesn't check for this failure, so it
busy-loops calling wgetch(NULL) which immediately returns -1.
The additions in the offset calculations also don't match the intended
size of the window.
Limit the window size and calculate the offset similarly to
show_scroll_win().
Fixes: 692d97c380c6 ("kconfig: new configuration interface (nconfig)")
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andy Grover [Tue, 22 Nov 2016 00:35:30 +0000 (16:35 -0800)]
target/user: Fix use-after-free of tcmu_cmds if they are expired
commit
d0905ca757bc40bd1ebc261a448a521b064777d7 upstream.
Don't free the cmd in tcmu_check_expired_cmd, it's still referenced by
an entry in our cmd_id->cmd idr. If userspace ever resumes processing,
tcmu_handle_completions() will use the now-invalid cmd pointer.
Instead, don't free cmd. It will be freed by tcmu_handle_completion() if
userspace ever recovers, or tcmu_free_device if not.
Reported-by: Bryant G Ly <bgly@us.ibm.com>
Tested-by: Bryant G Ly <bgly@us.ibm.com>
Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Segher Boessenkool [Thu, 6 Oct 2016 13:42:19 +0000 (13:42 +0000)]
powerpc: Convert cmp to cmpd in idle enter sequence
commit
80f23935cadb1c654e81951f5a8b7ceae0acc1b4 upstream.
PowerPC's "cmp" instruction has four operands. Normally people write
"cmpw" or "cmpd" for the second cmp operand 0 or 1. But, frequently
people forget, and write "cmp" with just three operands.
With older binutils this is silently accepted as if this was "cmpw",
while often "cmpd" is wanted. With newer binutils GAS will complain
about this for 64-bit code. For 32-bit code it still silently assumes
"cmpw" is what is meant.
In this instance the code comes directly from ISA v2.07, including the
cmp, but cmpd is correct. Backport to stable so that new toolchains can
build old kernels.
Fixes: 948cf67c4726 ("powerpc: Add NAP mode support on Power7 in HV mode")
Reviewed-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Geoff Levand [Tue, 29 Nov 2016 18:47:32 +0000 (10:47 -0800)]
powerpc/ps3: Fix system hang with GCC 5 builds
commit
6dff5b67054e17c91bd630bcdda17cfca5aa4215 upstream.
GCC 5 generates different code for this bootwrapper null check that
causes the PS3 to hang very early in its bootup. This check is of
limited value, so just get rid of it.
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Al Viro [Tue, 6 Sep 2016 01:42:32 +0000 (21:42 -0400)]
nfs_write_end(): fix handling of short copies
commit
c0cf3ef5e0f47e385920450b245d22bead93e7ad upstream.
What matters when deciding if we should make a page uptodate is
not how much we _wanted_ to copy, but how much we actually have
copied. As it is, on architectures that do not zero tail on
short copy we can leave uninitialized data in page marked uptodate.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ilya Dryomov [Fri, 2 Dec 2016 15:35:09 +0000 (16:35 +0100)]
libceph: verify authorize reply on connect
commit
5c056fdc5b474329037f2aa18401bd73033e0ce0 upstream.
After sending an authorizer (ceph_x_authorize_a + ceph_x_authorize_b),
the client gets back a ceph_x_authorize_reply, which it is supposed to
verify to ensure the authenticity and protect against replay attacks.
The code for doing this is there (ceph_x_verify_authorizer_reply(),
ceph_auth_verify_authorizer_reply() + plumbing), but it is never
invoked by the the messenger.
AFAICT this goes back to 2009, when ceph authentication protocols
support was added to the kernel client in
4e7a5dcd1bba ("ceph:
negotiate authentication protocol; implement AUTH_NONE protocol").
The second param of ceph_connection_operations::verify_authorizer_reply
is unused all the way down. Pass 0 to facilitate backporting, and kill
it in the next commit.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alan Stern [Fri, 21 Oct 2016 20:45:38 +0000 (16:45 -0400)]
PCI: Check for PME in targeted sleep state
commit
6496ebd7edf446fccf8266a1a70ffcb64252593e upstream.
One some systems, the firmware does not allow certain PCI devices to be put
in deep D-states. This can cause problems for wakeup signalling, if the
device does not support PME# in the deepest allowed suspend state. For
example, Pierre reports that on his system, ACPI does not permit his xHCI
host controller to go into D3 during runtime suspend -- but D3 is the only
state in which the controller can generate PME# signals. As a result, the
controller goes into runtime suspend but never wakes up, so it doesn't work
properly. USB devices plugged into the controller are never detected.
If the device relies on PME# for wakeup signals but is not capable of
generating PME# in the target state, the PCI core should accurately report
that it cannot do wakeup from runtime suspend. This patch modifies the
pci_dev_run_wake() routine to add this check.
Reported-by: Pierre de Villemereuil <flyos@mailoo.org>
Tested-by: Pierre de Villemereuil <flyos@mailoo.org>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
CC: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jingkui Wang [Mon, 12 Dec 2016 21:51:46 +0000 (13:51 -0800)]
Input: drv260x - fix input device's parent assignment
commit
5a8a6b89c15766446d845671d574a9243b6d8786 upstream.
We were assigning I2C bus controller instead of client as parent device.
Besides being logically wrong, it messed up with devm handling of input
device. As a result we were leaving input device and event node behind
after rmmod-ing the driver, which lead to a kernel oops if one were to
access the event node later.
Let's remove the assignment and rely on devm_input_allocate_device() to
set it up properly for us.
Signed-off-by: Jingkui Wang <jkwang@google.com>
Fixes: 7132fe4f5687 ("Input: drv260x - add TI drv260x haptics driver")
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andrey Utkin [Sat, 22 Oct 2016 15:34:36 +0000 (13:34 -0200)]
media: solo6x10: fix lockup by avoiding delayed register write
commit
5fc4b067ec082c3127e0156f800769b7e0dce078 upstream.
This fixes a lockup at device probing which happens on some solo6010
hardware samples. This is a regression introduced by commit
e1ceb25a1569
("[media] SOLO6x10: remove unneeded register locking and barriers")
The observed lockup happens in solo_set_motion_threshold() called from
solo_motion_config().
This extra "flushing" is not fundamentally needed for every write, but
apparently the code in driver assumes such behaviour at last in some
places.
Actual fix was proposed by Hans Verkuil.
Fixes: e1ceb25a1569 ("[media] SOLO6x10: remove unneeded register locking and barriers")
Signed-off-by: Andrey Utkin <andrey.utkin@corp.bluecherry.net>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bart Van Assche [Mon, 19 Dec 2016 17:00:05 +0000 (18:00 +0100)]
IB/cma: Fix a race condition in iboe_addr_get_sgid()
commit
fba332b079029c2f4f7e84c1c1cd8e3867310c90 upstream.
Code that dereferences the struct net_device ip_ptr member must be
protected with an in_dev_get() / in_dev_put() pair. Hence insert
calls to these functions.
Fixes: commit 7b85627b9f02 ("IB/cma: IBoE (RoCE) IP-based GID addressing")
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Moni Shoua <monis@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: Roland Dreier <roland@purestorage.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bart Van Assche [Mon, 21 Nov 2016 18:22:17 +0000 (10:22 -0800)]
IB/multicast: Check ib_find_pkey() return value
commit
d3a2418ee36a59bc02e9d454723f3175dcf4bfd9 upstream.
This patch avoids that Coverity complains about not checking the
ib_find_pkey() return value.
Fixes: commit 547af76521b3 ("IB/multicast: Report errors on multicast groups if P_key changes")
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bart Van Assche [Mon, 21 Nov 2016 18:21:41 +0000 (10:21 -0800)]
IPoIB: Avoid reading an uninitialized member variable
commit
11b642b84e8c43e8597de031678d15c08dd057bc upstream.
This patch avoids that Coverity reports the following:
Using uninitialized value port_attr.state when calling printk
Fixes: commit 94232d9ce817 ("IPoIB: Start multicast join process only on active ports")
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bart Van Assche [Mon, 21 Nov 2016 18:21:17 +0000 (10:21 -0800)]
IB/mad: Fix an array index check
commit
2fe2f378dd45847d2643638c07a7658822087836 upstream.
The array ib_mad_mgmt_class_table.method_table has MAX_MGMT_CLASS
(80) elements. Hence compare the array index with that value instead
of with IB_MGMT_MAX_METHODS (128). This patch avoids that Coverity
reports the following:
Overrunning array class->method_table of 80 8-byte elements at element index 127 (byte offset 1016) using index convert_mgmt_class(mad_hdr->mgmt_class) (which evaluates to 127).
Fixes: commit b7ab0b19a85f ("IB/mad: Verify mgmt class in received MADs")
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Reviewed-by: Hal Rosenstock <hal@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Steven Rostedt (Red Hat) [Fri, 9 Dec 2016 01:54:49 +0000 (20:54 -0500)]
fgraph: Handle a case where a tracer ignores set_graph_notrace
commit
794de08a16cf1fc1bf785dc48f66d36218cf6d88 upstream.
Both the wakeup and irqsoff tracers can use the function graph tracer when
the display-graph option is set. The problem is that they ignore the notrace
file, and record the entry of functions that would be ignored by the
function_graph tracer. This causes the trace->depth to be recorded into the
ring buffer. The set_graph_notrace uses a trick by adding a large negative
number to the trace->depth when a graph function is to be ignored.
On trace output, the graph function uses the depth to record a stack of
functions. But since the depth is negative, it accesses the array with a
negative number and causes an out of bounds access that can cause a kernel
oops or corrupt data.
Have the print functions handle cases where a tracer still records functions
even when they are in set_graph_notrace.
Also add warnings if the depth is below zero before accessing the array.
Note, the function graph logic will still prevent the return of these
functions from being recorded, which means that they will be left hanging
without a return. For example:
# echo '*spin*' > set_graph_notrace
# echo 1 > options/display-graph
# echo wakeup > current_tracer
# cat trace
[...]
_raw_spin_lock() {
preempt_count_add() {
do_raw_spin_lock() {
update_rq_clock();
Where it should look like:
_raw_spin_lock() {
preempt_count_add();
do_raw_spin_lock();
}
update_rq_clock();
Cc: Namhyung Kim <namhyung.kim@lge.com>
Fixes: 29ad23b00474 ("ftrace: Add set_graph_notrace filter")
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Marcos Paulo de Souza [Wed, 30 Nov 2016 01:23:06 +0000 (23:23 -0200)]
platform/x86: asus-nb-wmi.c: Add X45U quirk
commit
e74e259939275a5dd4e0d02845c694f421e249ad upstream.
Without this patch, the Asus X45U wireless card can't be turned
on (hard-blocked), but after a suspend/resume it just starts working.
Following this bug report[1], there are other cases like this one, but
this Asus is the only model that I can test.
[1] https://ubuntuforums.org/showthread.php?t=
2181558
Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Steven Rostedt (Red Hat) [Thu, 8 Dec 2016 17:48:26 +0000 (12:48 -0500)]
ftrace/x86_32: Set ftrace_stub to weak to prevent gcc from using short jumps to it
commit
847fa1a6d3d00f3bdf68ef5fa4a786f644a0dd67 upstream.
With new binutils, gcc may get smart with its optimization and change a jmp
from a 5 byte jump to a 2 byte one even though it was jumping to a global
function. But that global function existed within a 2 byte radius, and gcc
was able to optimize it. Unfortunately, that jump was also being modified
when function graph tracing begins. Since ftrace expected that jump to be 5
bytes, but it was only two, it overwrote code after the jump, causing a
crash.
This was fixed for x86_64 with commit
8329e818f149, with the same subject as
this commit, but nothing was done for x86_32.
Fixes: d61f82d06672 ("ftrace: use dynamic patching for updating mcount calls")
Reported-by: Colin Ian King <colin.king@canonical.com>
Tested-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jim Mattson [Mon, 12 Dec 2016 19:01:37 +0000 (11:01 -0800)]
kvm: nVMX: Allow L1 to intercept software exceptions (#BP and #OF)
commit
ef85b67385436ddc1998f45f1d6a210f935b3388 upstream.
When L2 exits to L0 due to "exception or NMI", software exceptions
(#BP and #OF) for which L1 has requested an intercept should be
handled by L1 rather than L0. Previously, only hardware exceptions
were forwarded to L1.
Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Paul Mackerras [Wed, 16 Nov 2016 05:43:28 +0000 (16:43 +1100)]
KVM: PPC: Book3S HV: Don't lose hardware R/C bit updates in H_PROTECT
commit
f064a0de1579fabded8990bed93971e30deb9ecb upstream.
The hashed page table MMU in POWER processors can update the R
(reference) and C (change) bits in a HPTE at any time until the
HPTE has been invalidated and the TLB invalidation sequence has
completed. In kvmppc_h_protect, which implements the H_PROTECT
hypercall, we read the HPTE, modify the second doubleword,
invalidate the HPTE in memory, do the TLB invalidation sequence,
and then write the modified value of the second doubleword back
to memory. In doing so we could overwrite an R/C bit update done
by hardware between when we read the HPTE and when the TLB
invalidation completed. To fix this we re-read the second
doubleword after the TLB invalidation and OR in the (possibly)
new values of R and C. We can use an OR since hardware only ever
sets R and C, never clears them.
This race was found by code inspection. In principle this bug could
cause occasional guest memory corruption under host memory pressure.
Fixes: a8606e20e41a ("KVM: PPC: Handle some PAPR hcalls in the kernel", 2011-06-29)
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Paul Mackerras [Mon, 7 Nov 2016 04:09:58 +0000 (15:09 +1100)]
KVM: PPC: Book3S HV: Save/restore XER in checkpointed register state
commit
0d808df06a44200f52262b6eb72bcb6042f5a7c5 upstream.
When switching from/to a guest that has a transaction in progress,
we need to save/restore the checkpointed register state. Although
XER is part of the CPU state that gets checkpointed, the code that
does this saving and restoring doesn't save/restore XER.
This fixes it by saving and restoring the XER. To allow userspace
to read/write the checkpointed XER value, we also add a new ONE_REG
specifier.
The visible effect of this bug is that the guest may see its XER
value being corrupted when it uses transactions.
Fixes: e4e38121507a ("KVM: PPC: Book3S HV: Add transactional memory support")
Fixes: 0a8eccefcb34 ("KVM: PPC: Book3S HV: Add missing code for transaction reclaim on guest exit")
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konstantin Khlebnikov [Sun, 27 Nov 2016 16:32:32 +0000 (19:32 +0300)]
md/raid5: limit request size according to implementation limits
commit
e8d7c33232e5fdfa761c3416539bc5b4acd12db5 upstream.
Current implementation employ 16bit counter of active stripes in lower
bits of bio->bi_phys_segments. If request is big enough to overflow
this counter bio will be completed and freed too early.
Fortunately this not happens in default configuration because several
other limits prevent that: stripe_cache_size * nr_disks effectively
limits count of active stripes. And small max_sectors_kb at lower
disks prevent that during normal read/write operations.
Overflow easily happens in discard if it's enabled by module parameter
"devices_handle_discard_safely" and stripe_cache_size is set big enough.
This patch limits requests size with 256Mb - 8Kb to prevent overflows.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Shaohua Li <shli@kernel.org>
Cc: Neil Brown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Josh Cartwright [Thu, 13 Oct 2016 15:44:33 +0000 (10:44 -0500)]
sc16is7xx: Drop bogus use of IRQF_ONESHOT
commit
04da73803c05dc1150ccc31cbf93e8cd56679c09 upstream.
The use of IRQF_ONESHOT when registering an interrupt handler with
request_irq() is non-sensical.
Not only that, it also prevents the handler from being threaded when it
otherwise should be w/ IRQ_FORCED_THREADING is enabled. This causes the
following deadlock observed by Sean Nyekjaer on -rt:
Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM
[..]
rt_spin_lock_slowlock from queue_kthread_work
queue_kthread_work from sc16is7xx_irq
sc16is7xx_irq [sc16is7xx] from handle_irq_event_percpu
handle_irq_event_percpu from handle_irq_event
handle_irq_event from handle_level_irq
handle_level_irq from generic_handle_irq
generic_handle_irq from mxc_gpio_irq_handler
mxc_gpio_irq_handler from mx3_gpio_irq_handler
mx3_gpio_irq_handler from generic_handle_irq
generic_handle_irq from __handle_domain_irq
__handle_domain_irq from gic_handle_irq
gic_handle_irq from __irq_svc
__irq_svc from rt_spin_unlock
rt_spin_unlock from kthread_worker_fn
kthread_worker_fn from kthread
kthread from ret_from_fork
Fixes: 9e6f4ca3e567 ("sc16is7xx: use kthread_worker for tx_work and irq")
Reported-by: Sean Nyekjaer <sean.nyekjaer@prevas.dk>
Signed-off-by: Josh Cartwright <joshc@ni.com>
Cc: linux-rt-users@vger.kernel.org
Cc: Jakub Kicinski <moorray3@wp.pl>
Cc: linux-serial@vger.kernel.org
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Julia Cartwright <julia@ni.com>
Acked-by: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Gerald Schaefer [Mon, 21 Nov 2016 11:13:58 +0000 (12:13 +0100)]
s390/vmlogrdr: fix IUCV buffer allocation
commit
5457e03de918f7a3e294eb9d26a608ab8a579976 upstream.
The buffer for iucv_message_receive() needs to be below 2 GB. In
__iucv_message_receive(), the buffer address is casted to an u32, which
would result in either memory corruption or an addressing exception when
using addresses >= 2 GB.
Fix this by using GFP_DMA for the buffer allocation.
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Yves-Alexis Perez [Fri, 11 Nov 2016 19:28:40 +0000 (11:28 -0800)]
firmware: fix usermode helper fallback loading
commit
2e700f8d85975f516ccaad821278c1fe66b2cc98 upstream.
When you use the firmware usermode helper fallback with a timeout value set to a
value greater than INT_MAX (
2147483647) a cast overflow issue causes the
timeout value to go negative and breaks all usermode helper loading. This
regression was introduced through commit
68ff2a00dbf5 ("firmware_loader:
handle timeout via wait_for_completion_interruptible_timeout()") on kernel
v4.0.
The firmware_class drivers relies on the firmware usermode helper
fallback as a mechanism to look for firmware if the direct filesystem
search failed only if:
a) You've enabled CONFIG_FW_LOADER_USER_HELPER_FALLBACK (not many distros):
Then all of these callers will rely on the fallback mechanism in case
the firmware is not found through an initial direct filesystem lookup:
o request_firmware()
o request_firmware_into_buf()
o request_firmware_nowait()
b) If you've only enabled CONFIG_FW_LOADER_USER_HELPER (most distros):
Then only callers using request_firmware_nowait() with the second
argument set to false, this explicitly is requesting the UMH firmware
fallback to be relied on in case the first filesystem lookup fails.
Using Coccinelle SmPL grammar we have identified only two drivers
explicitly requesting the UMH firmware fallback mechanism:
- drivers/firmware/dell_rbu.c
- drivers/leds/leds-lp55xx-common.c
Since most distributions only enable CONFIG_FW_LOADER_USER_HELPER the
biggest impact of this regression are users of the dell_rbu and
leds-lp55xx-common device driver which required the UMH to find their
respective needed firmwares.
The default timeout for the UMH is set to 60 seconds always, as of
commit
68ff2a00dbf5 ("firmware_loader: handle timeout via
wait_for_completion_interruptible_timeout()") the timeout was bumped
to MAX_JIFFY_OFFSET ((LONG_MAX >> 1)-1). Additionally the MAX_JIFFY_OFFSET
value was also used if the timeout was configured by a user to 0.
The following works:
echo
2147483647 > /sys/class/firmware/timeout
But both of the following set the timeout to MAX_JIFFY_OFFSET even if
we display 0 back to userspace:
echo
2147483648 > /sys/class/firmware/timeout
cat /sys/class/firmware/timeout
0
echo 0> /sys/class/firmware/timeout
cat /sys/class/firmware/timeout
0
A max value of INT_MAX (
2147483647) seconds is therefore implicit due to the
another cast with simple_strtol().
This fixes the secondary cast (the first one is simple_strtol() but its an
issue only by forcing an implicit limit) by re-using the timeout variable and
only setting retval in appropriate cases.
Lastly worth noting systemd had ripped out the UMH firmware fallback
mechanism from udev since udev 2014 via commit
be2ea723b1d023b3d
("udev: remove userspace firmware loading support"), so as of systemd v217.
Signed-off-by: Yves-Alexis Perez <corsac@corsac.net>
Fixes: 68ff2a00dbf5 "firmware_loader: handle timeout via wait_for_completion_interruptible_timeout()"
Cc: Luis R. Rodriguez <mcgrof@kernel.org>
Cc: Ming Lei <ming.lei@canonical.com>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Luis R. Rodriguez <mcgrof@kernel.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
[mcgrof@kernel.org: gave commit log a whole lot of love]
Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vineet Gupta [Mon, 19 Dec 2016 19:38:38 +0000 (11:38 -0800)]
ARC: mm: arc700: Don't assume 2 colours for aliasing VIPT dcache
commit
08fe007968b2b45e831daf74899f79a54d73f773 upstream.
An ARC700 customer reported linux boot crashes when upgrading to bigger
L1 dcache (64K from 32K). Turns out they had an aliasing VIPT config and
current code only assumed 2 colours, while theirs had 4. So default to 4
colours and complain if there are fewer. Ideally this needs to be a
Kconfig option, but heck that's too much of hassle for a single user.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Wei Fang [Tue, 13 Dec 2016 01:25:21 +0000 (09:25 +0800)]
scsi: avoid a permanent stop of the scsi device's request queue
commit
d2a145252c52792bc59e4767b486b26c430af4bb upstream.
A race between scanning and fc_remote_port_delete() may result in a
permanent stop if the device gets blocked before scsi_sysfs_add_sdev()
and unblocked after. The reason is that blocking a device sets both the
SDEV_BLOCKED state and the QUEUE_FLAG_STOPPED. However,
scsi_sysfs_add_sdev() unconditionally sets SDEV_RUNNING which causes the
device to be ignored by scsi_target_unblock() and thus never have its
QUEUE_FLAG_STOPPED cleared leading to a device which is apparently
running but has a stopped queue.
We actually have two places where SDEV_RUNNING is set: once in
scsi_add_lun() which respects the blocked flag and once in
scsi_sysfs_add_sdev() which doesn't. Since the second set is entirely
spurious, simply remove it to fix the problem.
Reported-by: Zengxi Chen <chenzengxi@huawei.com>
Signed-off-by: Wei Fang <fangwei1@huawei.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Steffen Maier [Fri, 9 Dec 2016 16:16:33 +0000 (17:16 +0100)]
scsi: zfcp: fix rport unblock race with LUN recovery
commit
6f2ce1c6af37191640ee3ff6e8fc39ea10352f4c upstream.
It is unavoidable that zfcp_scsi_queuecommand() has to finish requests
with DID_IMM_RETRY (like fc_remote_port_chkready()) during the time
window when zfcp detected an unavailable rport but
fc_remote_port_delete(), which is asynchronous via
zfcp_scsi_schedule_rport_block(), has not yet blocked the rport.
However, for the case when the rport becomes available again, we should
prevent unblocking the rport too early. In contrast to other FCP LLDDs,
zfcp has to open each LUN with the FCP channel hardware before it can
send I/O to a LUN. So if a port already has LUNs attached and we
unblock the rport just after port recovery, recoveries of LUNs behind
this port can still be pending which in turn force
zfcp_scsi_queuecommand() to unnecessarily finish requests with
DID_IMM_RETRY.
This also opens a time window with unblocked rport (until the followup
LUN reopen recovery has finished). If a scsi_cmnd timeout occurs during
this time window fc_timed_out() cannot work as desired and such command
would indeed time out and trigger scsi_eh. This prevents a clean and
timely path failover. This should not happen if the path issue can be
recovered on FC transport layer such as path issues involving RSCNs.
Fix this by only calling zfcp_scsi_schedule_rport_register(), to
asynchronously trigger fc_remote_port_add(), after all LUN recoveries as
children of the rport have finished and no new recoveries of equal or
higher order were triggered meanwhile. Finished intentionally includes
any recovery result no matter if successful or failed (still unblock
rport so other successful LUNs work). For simplicity, we check after
each finished LUN recovery if there is another LUN recovery pending on
the same port and then do nothing. We handle the special case of a
successful recovery of a port without LUN children the same way without
changing this case's semantics.
For debugging we introduce 2 new trace records written if the rport
unblock attempt was aborted due to still unfinished or freshly triggered
recovery. The records are only written above the default trace level.
Benjamin noticed the important special case of new recovery that can be
triggered between having given up the erp_lock and before calling
zfcp_erp_action_cleanup() within zfcp_erp_strategy(). We must avoid the
following sequence:
ERP thread rport_work other context
------------------------- -------------- --------------------------------
port is unblocked, rport still blocked,
due to pending/running ERP action,
so ((port->status & ...UNBLOCK) != 0)
and (port->rport == NULL)
unlock ERP
zfcp_erp_action_cleanup()
case ZFCP_ERP_ACTION_REOPEN_LUN:
zfcp_erp_try_rport_unblock()
((status & ...UNBLOCK) != 0) [OLD!]
zfcp_erp_port_reopen()
lock ERP
zfcp_erp_port_block()
port->status clear ...UNBLOCK
unlock ERP
zfcp_scsi_schedule_rport_block()
port->rport_task = RPORT_DEL
queue_work(rport_work)
zfcp_scsi_rport_work()
(port->rport_task != RPORT_ADD)
port->rport_task = RPORT_NONE
zfcp_scsi_rport_block()
if (!port->rport) return
zfcp_scsi_schedule_rport_register()
port->rport_task = RPORT_ADD
queue_work(rport_work)
zfcp_scsi_rport_work()
(port->rport_task == RPORT_ADD)
port->rport_task = RPORT_NONE
zfcp_scsi_rport_register()
(port->rport == NULL)
rport = fc_remote_port_add()
port->rport = rport;
Now the rport was erroneously unblocked while the zfcp_port is blocked.
This is another situation we want to avoid due to scsi_eh
potential. This state would at least remain until the new recovery from
the other context finished successfully, or potentially forever if it
failed. In order to close this race, we take the erp_lock inside
zfcp_erp_try_rport_unblock() when checking the status of zfcp_port or
LUN. With that, the possible corresponding rport state sequences would
be: (unblock[ERP thread],block[other context]) if the ERP thread gets
erp_lock first and still sees ((port->status & ...UNBLOCK) != 0),
(block[other context],NOP[ERP thread]) if the ERP thread gets erp_lock
after the other context has already cleard ...UNBLOCK from port->status.
Since checking fields of struct erp_action is unsafe because they could
have been overwritten (re-used for new recovery) meanwhile, we only
check status of zfcp_port and LUN since these are only changed under
erp_lock elsewhere. Regarding the check of the proper status flags (port
or port_forced are similar to the shown adapter recovery):
[zfcp_erp_adapter_shutdown()]
zfcp_erp_adapter_reopen()
zfcp_erp_adapter_block()
* clear UNBLOCK ---------------------------------------+
zfcp_scsi_schedule_rports_block() |
write_lock_irqsave(&adapter->erp_lock, flags);-------+ |
zfcp_erp_action_enqueue() | |
zfcp_erp_setup_act() | |
* set ERP_INUSE -----------------------------------|--|--+
write_unlock_irqrestore(&adapter->erp_lock, flags);--+ | |
.context-switch. | |
zfcp_erp_thread() | |
zfcp_erp_strategy() | |
write_lock_irqsave(&adapter->erp_lock, flags);------+ | |
... | | |
zfcp_erp_strategy_check_target() | | |
zfcp_erp_strategy_check_adapter() | | |
zfcp_erp_adapter_unblock() | | |
* set UNBLOCK -----------------------------------|--+ |
zfcp_erp_action_dequeue() | |
* clear ERP_INUSE ---------------------------------|-----+
... |
write_unlock_irqrestore(&adapter->erp_lock, flags);-+
Hence, we should check for both UNBLOCK and ERP_INUSE because they are
interleaved. Also we need to explicitly check ERP_FAILED for the link
down case which currently does not clear the UNBLOCK flag in
zfcp_fsf_link_down_info_eval().
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: 8830271c4819 ("[SCSI] zfcp: Dont fail SCSI commands when transitioning to blocked fc_rport")
Fixes: a2fa0aede07c ("[SCSI] zfcp: Block FC transport rports early on errors")
Fixes: 5f852be9e11d ("[SCSI] zfcp: Fix deadlock between zfcp ERP and SCSI")
Fixes: 338151e06608 ("[SCSI] zfcp: make use of fc_remote_port_delete when target port is unavailable")
Fixes: 3859f6a248cb ("[PATCH] zfcp: add rports to enable scsi_add_device to work again")
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Steffen Maier [Fri, 9 Dec 2016 16:16:32 +0000 (17:16 +0100)]
scsi: zfcp: do not trace pure benign residual HBA responses at default level
commit
56d23ed7adf3974f10e91b643bd230e9c65b5f79 upstream.
Since quite a while, Linux issues enough SCSI commands per scsi_device
which successfully return with FCP_RESID_UNDER, FSF_FCP_RSP_AVAILABLE,
and SAM_STAT_GOOD. This floods the HBA trace area and we cannot see
other and important HBA trace records long enough.
Therefore, do not trace HBA response errors for pure benign residual
under counts at the default trace level.
This excludes benign residual under count combined with other validity
bits set in FCP_RSP_IU, such as FCP_SNS_LEN_VAL. For all those other
cases, we still do want to see both the HBA record and the corresponding
SCSI record by default.
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: a54ca0f62f95 ("[SCSI] zfcp: Redesign of the debug tracing for HBA records.")
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Benjamin Block [Fri, 9 Dec 2016 16:16:31 +0000 (17:16 +0100)]
scsi: zfcp: fix use-after-"free" in FC ingress path after TMF
commit
dac37e15b7d511e026a9313c8c46794c144103cd upstream.
When SCSI EH invokes zFCP's callbacks for eh_device_reset_handler() and
eh_target_reset_handler(), it expects us to relent the ownership over
the given scsi_cmnd and all other scsi_cmnds within the same scope - LUN
or target - when returning with SUCCESS from the callback ('release'
them). SCSI EH can then reuse those commands.
We did not follow this rule to release commands upon SUCCESS; and if
later a reply arrived for one of those supposed to be released commands,
we would still make use of the scsi_cmnd in our ingress tasklet. This
will at least result in undefined behavior or a kernel panic because of
a wrong kernel pointer dereference.
To fix this, we NULLify all pointers to scsi_cmnds (struct zfcp_fsf_req
*)->data in the matching scope if a TMF was successful. This is done
under the locks (struct zfcp_adapter *)->abort_lock and (struct
zfcp_reqlist *)->lock to prevent the requests from being removed from
the request-hashtable, and the ingress tasklet from making use of the
scsi_cmnd-pointer in zfcp_fsf_fcp_cmnd_handler().
For cases where a reply arrives during SCSI EH, but before we get a
chance to NULLify the pointer - but before we return from the callback
-, we assume that the code is protected from races via the CAS operation
in blk_complete_request() that is called in scsi_done().
The following stacktrace shows an example for a crash resulting from the
previous behavior:
Unable to handle kernel pointer dereference at virtual kernel address
fffffee17a672000
Oops: 0038 [#1] SMP
CPU: 2 PID: 0 Comm: swapper/2 Not tainted
task:
00000003f7ff5be0 ti:
00000003f3d38000 task.ti:
00000003f3d38000
Krnl PSW :
0404d00180000000 00000000001156b0 (smp_vcpu_scheduled+0x18/0x40)
R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 EA:3
Krnl GPRS:
000000200000007e 0000000000000000 fffffee17a671fd8 0000000300000015
ffffffff80000000 00000000005dfde8 07000003f7f80e00 000000004fa4e800
000000036ce8d8f8 000000036ce8d9c0 00000003ece8fe00 ffffffff969c9e93
00000003fffffffd 000000036ce8da10 00000000003bf134 00000003f3b07918
Krnl Code:
00000000001156a2:
a7190000 lghi %r1,0
00000000001156a6:
a7380015 lhi %r3,21
#
00000000001156aa:
e32050000008 ag %r2,0(%r5)
>
00000000001156b0:
482022b0 lh %r2,688(%r2)
00000000001156b4:
ae123000 sigp %r1,%r2,0(%r3)
00000000001156b8:
b2220020 ipm %r2
00000000001156bc:
8820001c srl %r2,28
00000000001156c0:
c02700000001 xilf %r2,1
Call Trace:
([<
0000000000000000>] 0x0)
[<
000003ff807bdb8e>] zfcp_fsf_fcp_cmnd_handler+0x3de/0x490 [zfcp]
[<
000003ff807be30a>] zfcp_fsf_req_complete+0x252/0x800 [zfcp]
[<
000003ff807c0a48>] zfcp_fsf_reqid_check+0xe8/0x190 [zfcp]
[<
000003ff807c194e>] zfcp_qdio_int_resp+0x66/0x188 [zfcp]
[<
000003ff80440c64>] qdio_kick_handler+0xdc/0x310 [qdio]
[<
000003ff804463d0>] __tiqdio_inbound_processing+0xf8/0xcd8 [qdio]
[<
0000000000141fd4>] tasklet_action+0x9c/0x170
[<
0000000000141550>] __do_softirq+0xe8/0x258
[<
000000000010ce0a>] do_softirq+0xba/0xc0
[<
000000000014187c>] irq_exit+0xc4/0xe8
[<
000000000046b526>] do_IRQ+0x146/0x1d8
[<
00000000005d6a3c>] io_return+0x0/0x8
[<
00000000005d6422>] vtime_stop_cpu+0x4a/0xa0
([<
0000000000000000>] 0x0)
[<
0000000000103d8a>] arch_cpu_idle+0xa2/0xb0
[<
0000000000197f94>] cpu_startup_entry+0x13c/0x1f8
[<
0000000000114782>] smp_start_secondary+0xda/0xe8
[<
00000000005d6efe>] restart_int_handler+0x56/0x6c
[<
0000000000000000>] 0x0
Last Breaking-Event-Address:
[<
00000000003bf12e>] arch_spin_lock_wait+0x56/0xb0
Suggested-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Fixes: ea127f9754 ("[PATCH] s390 (7/7): zfcp host adapter.") (tglx/history.git)
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kashyap Desai [Fri, 21 Oct 2016 13:33:35 +0000 (06:33 -0700)]
scsi: megaraid_sas: Do not set MPI2_TYPE_CUDA for JBOD FP path for FW which does not support JBOD sequence map
commit
d5573584429254a14708cf8375c47092b5edaf2c upstream.
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kashyap Desai [Fri, 21 Oct 2016 13:33:29 +0000 (06:33 -0700)]
scsi: megaraid_sas: For SRIOV enabled firmware, ensure VF driver waits for 30secs before reset
commit
18e1c7f68a5814442abad849abe6eacbf02ffd7c upstream.
For SRIOV enabled firmware, if there is a OCR(online controller reset)
possibility driver set the convert flag to 1, which is not happening if
there are outstanding commands even after 180 seconds. As driver does
not set convert flag to 1 and still making the OCR to run, VF(Virtual
function) driver is directly writing on to the register instead of
waiting for 30 seconds. Setting convert flag to 1 will cause VF driver
will wait for 30 secs before going for reset.
Signed-off-by: Kiran Kumar Kasturi <kiran-kumar.kasturi@broadcom.com>
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Maciej S. Szmigiero [Tue, 15 Nov 2016 23:55:57 +0000 (00:55 +0100)]
vt: fix Scroll Lock LED trigger name
commit
31b5929d533f5183972cf57a7844b456ed996f3c upstream.
There is a disagreement between drivers/tty/vt/keyboard.c and
drivers/input/input-leds.c with regard to what is a Scroll Lock LED
trigger name: input calls it "kbd-scrolllock", but vt calls it
"kbd-scrollock" (two l's).
This prevents Scroll Lock LED trigger from binding to this LED by default.
Since it is a scroLL Lock LED, this interface was introduced only about a
year ago and in an Internet search people seem to reference this trigger
only to set it to this LED let's simply rename it to "kbd-scrolllock".
Also, it looks like this was supposed to be changed before this code was
merged: https://lkml.org/lkml/2015/6/9/697 but it was done only on
the input side.
Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Rabin Vincent [Thu, 1 Dec 2016 08:18:28 +0000 (09:18 +0100)]
block: protect iterate_bdevs() against concurrent close
commit
af309226db916e2c6e08d3eba3fa5c34225200c4 upstream.
If a block device is closed while iterate_bdevs() is handling it, the
following NULL pointer dereference occurs because bdev->b_disk is NULL
in bdev_get_queue(), which is called from blk_get_backing_dev_info() (in
turn called by the mapping_cap_writeback_dirty() call in
__filemap_fdatawrite_range()):
BUG: unable to handle kernel NULL pointer dereference at
0000000000000508
IP: [<
ffffffff81314790>] blk_get_backing_dev_info+0x10/0x20
PGD
9e62067 PUD
9ee8067 PMD 0
Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
Modules linked in:
CPU: 1 PID: 2422 Comm: sync Not tainted 4.5.0-rc7+ #400
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)
task:
ffff880009f4d700 ti:
ffff880009f5c000 task.ti:
ffff880009f5c000
RIP: 0010:[<
ffffffff81314790>] [<
ffffffff81314790>] blk_get_backing_dev_info+0x10/0x20
RSP: 0018:
ffff880009f5fe68 EFLAGS:
00010246
RAX:
0000000000000000 RBX:
ffff88000ec17a38 RCX:
ffffffff81a4e940
RDX:
7fffffffffffffff RSI:
0000000000000000 RDI:
ffff88000ec176c0
RBP:
ffff880009f5fe68 R08:
0000000000000000 R09:
0000000000000000
R10:
0000000000000001 R11:
0000000000000000 R12:
ffff88000ec17860
R13:
ffffffff811b25c0 R14:
ffff88000ec178e0 R15:
ffff88000ec17a38
FS:
00007faee505d700(0000) GS:
ffff88000fb00000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
000000008005003b
CR2:
0000000000000508 CR3:
0000000009e8a000 CR4:
00000000000006e0
Stack:
ffff880009f5feb8 ffffffff8112e7f5 0000000000000000 7fffffffffffffff
0000000000000000 0000000000000000 7fffffffffffffff 0000000000000001
ffff88000ec178e0 ffff88000ec17860 ffff880009f5fec8 ffffffff8112e81f
Call Trace:
[<
ffffffff8112e7f5>] __filemap_fdatawrite_range+0x85/0x90
[<
ffffffff8112e81f>] filemap_fdatawrite+0x1f/0x30
[<
ffffffff811b25d6>] fdatawrite_one_bdev+0x16/0x20
[<
ffffffff811bc402>] iterate_bdevs+0xf2/0x130
[<
ffffffff811b2763>] sys_sync+0x63/0x90
[<
ffffffff815d4272>] entry_SYSCALL_64_fastpath+0x12/0x76
Code: 0f 1f 44 00 00 48 8b 87 f0 00 00 00 55 48 89 e5 <48> 8b 80 08 05 00 00 5d
RIP [<
ffffffff81314790>] blk_get_backing_dev_info+0x10/0x20
RSP <
ffff880009f5fe68>
CR2:
0000000000000508
---[ end trace
2487336ceb3de62d ]---
The crash is easily reproducible by running the following command, if an
msleep(100) is inserted before the call to func() in iterate_devs():
while :; do head -c1 /dev/nullb0; done > /dev/null & while :; do sync; done
Fix it by holding the bd_mutex across the func() call and only calling
func() if the bdev is opened.
Fixes: 5c0d6b60a0ba ("vfs: Create function for iterating over block devices")
Reported-and-tested-by: Wei Fang <fangwei1@huawei.com>
Signed-off-by: Rabin Vincent <rabinv@axis.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alexander Usyskin [Thu, 24 Nov 2016 11:34:02 +0000 (13:34 +0200)]
mei: request async autosuspend at the end of enumeration
commit
d5f8e166c25750adc147b0adf64a62a91653438a upstream.
pm_runtime_autosuspend can take synchronous or asynchronous
paths, Because we are calling pm_runtime_mark_last_busy just before
this most of the cases it takes the asynchronous way. However,
when the FW or driver resets during already running runtime suspend,
the call will result in calling to the driver's rpm callback and results
in a deadlock on device_lock.
The simplest fix is to replace pm_runtime_autosuspend with
asynchronous pm_request_autosuspend.
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Russell Currey [Thu, 15 Dec 2016 05:12:41 +0000 (16:12 +1100)]
drivers/gpu/drm/ast: Fix infinite loop if read fails
commit
298360af3dab45659810fdc51aba0c9f4097e4f6 upstream.
ast_get_dram_info() configures a window in order to access BMC memory.
A BMC register can be configured to disallow this, and if so, causes
an infinite loop in the ast driver which renders the system unusable.
Fix this by erroring out if an error is detected. On powerpc systems with
EEH, this leads to the device being fenced and the system continuing to
operate.
Signed-off-by: Russell Currey <ruscur@russell.cc>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161215051241.20815-1-ruscur@russell.cc
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Patrik Jakobsson [Tue, 1 Nov 2016 14:43:15 +0000 (15:43 +0100)]
drm/gma500: Add compat ioctl
commit
0a97c81a9717431e6c57ea845b59c3c345edce67 upstream.
Hook up drm_compat_ioctl to support 32-bit userspace on 64-bit kernels.
It turns out that N2600 and N2800 comes with 64-bit enabled. We
previously assumed there where no such systems out there.
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20161101144315.2955-1-patrik.r.jakobsson@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alex Deucher [Fri, 2 Dec 2016 05:21:48 +0000 (00:21 -0500)]
drm/radeon: add additional pci revision to dpm workaround
commit
8729675c00a8d13cb2094d617d70a4a4da7d83c5 upstream.
New variant.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Michel Dänzer [Thu, 27 Oct 2016 05:54:31 +0000 (14:54 +0900)]
drm/radeon: Hide the HW cursor while it's out of bounds
commit
6b16cf7785a4200b1bddf4f70c9dda2efc49e278 upstream.
Fixes hangs in that case under some circumstances.
v2:
* Only use non-0 x/yorigin if the cursor is (partially) outside of the
top/left edge of the total surface with AVIVO/DCE
Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=
1000433
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com> (v1)
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Michel Dänzer [Thu, 27 Oct 2016 04:03:23 +0000 (13:03 +0900)]
drm/radeon: Also call cursor_move_locked when the cursor size changes
commit
dcab0fa64e300afa18f39cd98d05e0950f652adf upstream.
The cursor size also affects the register programming.
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ben Skeggs [Thu, 3 Nov 2016 06:37:33 +0000 (16:37 +1000)]
drm/nouveau/i2c/gk110b,gm10x: use the correct implementation
commit
5b3800a6b763874e4a23702fb9628d3bd3315ce9 upstream.
DPAUX registers moved on Kepler, these chipsets were still using the
Fermi implementation for some reason.
This fixes detection of hotplug/sink IRQs on DP connectors.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ben Skeggs [Sat, 5 Nov 2016 04:33:14 +0000 (14:33 +1000)]
drm/nouveau/fifo/gf100-: protect channel preempt with subdev mutex
commit
b27add13f500469127afdf011dbcc9c649e16e54 upstream.
This avoids an issue that occurs when we're attempting to preempt multiple
channels simultaneously. HW seems to ignore preempt requests while it's
still processing a previous one, which, well, makes sense.
Fixes random "fifo: SCHED_ERROR 0d []" + GPCCS page faults during parallel
piglit runs on (at least) GM107.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ben Skeggs [Mon, 12 Dec 2016 23:29:55 +0000 (09:29 +1000)]
drm/nouveau/ltc: protect clearing of comptags with mutex
commit
f4e65efc88b64c1dbca275d42a188edccedb56c6 upstream.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ben Skeggs [Fri, 14 Oct 2016 03:16:36 +0000 (13:16 +1000)]
drm/nouveau/bios: require checksum to match for fast acpi shadow method
commit
5dc7f4aa9d84ea94b54a9bfcef095f0289f1ebda upstream.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ben Skeggs [Wed, 19 Oct 2016 02:15:52 +0000 (12:15 +1000)]
drm/nouveau/kms: lvds panel strap moved again on maxwell
commit
768e847759d551c96e129e194588dbfb11a1d576 upstream.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Hans de Goede [Tue, 29 Nov 2016 14:32:16 +0000 (15:32 +0100)]
ACPI / video: Add force_native quirk for HP Pavilion dv6
commit
6276e53fa8c06a3a5cf7b95b77b079966de9ad66 upstream.
The HP Pavilion dv6 has a non-working acpi_video0 backlight interface
and an intel_backlight interface which works fine. Add a force_native
quirk for it so that the non-working acpi_video0 interface does not get
registered.
Note that there are quite a few HP Pavilion dv6 variants, some
woth ATI and some with NVIDIA hybrid gfx, both seem to need this
quirk to have working backlight control. There are also some versions
with only Intel integrated gfx, these may not need this quirk, but it
should not hurt there.
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1204476
Link: https://bugs.launchpad.net/ubuntu/+source/linux-lts-trusty/+bug/1416940
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Hans de Goede [Tue, 29 Nov 2016 14:32:15 +0000 (15:32 +0100)]
ACPI / video: Add force_native quirk for Dell XPS 17 L702X
commit
350fa038c31b056fc509624efb66348ac2c1e3d0 upstream.
The Dell XPS 17 L702X has a non-working acpi_video0 backlight interface
and an intel_backlight interface which works fine. Add a force_native
quirk for it so that the non-working acpi_video0 interface does not get
registered.
Note that there also is an issue with the brightnesskeys on this laptop,
they do not generate key-press events in anyway. That is not solved by
this patch.
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1123661
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ian Abbott [Mon, 14 Nov 2016 20:16:22 +0000 (20:16 +0000)]
staging: comedi: ni_mio_common: fix E series ni_ai_insn_read() data
commit
857a661020a2de3a0304edf33ad656abee100891 upstream.
Commit
0557344e2149 ("staging: comedi: ni_mio_common: fix local var for
32-bit read") changed the type of local variable `d` from `unsigned
short` to `unsigned int` to fix a bug introduced in
commit
9c340ac934db ("staging: comedi: ni_stc.h: add read/write
callbacks to struct ni_private") when reading AI data for NI PCI-6110
and PCI-6111 cards. Unfortunately, other parts of the function rely on
the variable being `unsigned short` when an offset value in local
variable `signbits` is added to `d` before writing the value to the
`data` array:
d += signbits;
data[n] = d;
The `signbits` variable will be non-zero in bipolar mode, and is used to
convert the hardware's 2's complement, 16-bit numbers to Comedi's
straight binary sample format (with 0 representing the most negative
voltage). This breaks because `d` is now 32 bits wide instead of 16
bits wide, so after the addition of `signbits`, `data[n]` ends up being
set to values above 65536 for negative voltages. This affects all
supported "E series" cards except PCI-6143 (and PXI-6143). Fix it by
ANDing the value written to the `data[n]` with the mask 0xffff.
Fixes: 0557344e2149 ("staging: comedi: ni_mio_common: fix local var for 32-bit read")
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ian Abbott [Mon, 14 Nov 2016 20:16:21 +0000 (20:16 +0000)]
staging: comedi: ni_mio_common: fix M Series ni_ai_insn_read() data mask
commit
655c4d442d1213b617926cc6d54e2a9a793fb46b upstream.
For NI M Series cards, the Comedi `insn_read` handler for the AI
subdevice is broken due to ANDing the value read from the AI FIFO data
register with an incorrect mask. The incorrect mask clears all but the
most significant bit of the sample data. It should preserve all the
sample data bits. Correct it.
Fixes: 817144ae7fda ("staging: comedi: ni_mio_common: remove unnecessary use of 'board->adbits'")
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Krzysztof Kozlowski [Tue, 22 Nov 2016 17:22:44 +0000 (19:22 +0200)]
thermal: hwmon: Properly report critical temperature in sysfs
commit
f37fabb8643eaf8e3b613333a72f683770c85eca upstream.
In the critical sysfs entry the thermal hwmon was returning wrong
temperature to the user-space. It was reporting the temperature of the
first trip point instead of the temperature of critical trip point.
For example:
/sys/class/hwmon/hwmon0/temp1_crit:50000
/sys/class/thermal/thermal_zone0/trip_point_0_temp:50000
/sys/class/thermal/thermal_zone0/trip_point_0_type:active
/sys/class/thermal/thermal_zone0/trip_point_3_temp:120000
/sys/class/thermal/thermal_zone0/trip_point_3_type:critical
Since commit
e68b16abd91d ("thermal: add hwmon sysfs I/F") the driver
have been registering a sysfs entry if get_crit_temp() callback was
provided. However when accessed, it was calling get_trip_temp() instead
of the get_crit_temp().
Fixes: e68b16abd91d ("thermal: add hwmon sysfs I/F")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Boris Brezillon [Thu, 1 Dec 2016 19:27:21 +0000 (20:27 +0100)]
clk: bcm2835: Avoid overwriting the div info when disabling a pll_div clk
commit
68af4fa8f39b542a6cde7ac19518d88e9b3099dc upstream.
bcm2835_pll_divider_off() is resetting the divider field in the A2W reg
to zero when disabling the clock.
Make sure we preserve this value by reading the previous a2w_reg value
first and ORing the result with A2W_PLL_CHANNEL_DISABLE.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Fixes: 41691b8862e2 ("clk: bcm2835: Add support for programming the audio domain clocks")
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Gleixner [Thu, 8 Dec 2016 20:49:32 +0000 (20:49 +0000)]
timekeeping_Force_unsigned_clocksource_to_nanoseconds_conversion
commit
9c1645727b8fa90d07256fdfcc45bf831242a3ab upstream.
The clocksource delta to nanoseconds conversion is using signed math, but
the delta is unsigned. This makes the conversion space smaller than
necessary and in case of a multiplication overflow the conversion can
become negative. The conversion is done with scaled math:
s64 nsec_delta = ((s64)clkdelta * clk->mult) >> clk->shift;
Shifting a signed integer right obvioulsy preserves the sign, which has
interesting consequences:
- Time jumps backwards
- __iter_div_u64_rem() which is used in one of the calling code pathes
will take forever to piecewise calculate the seconds/nanoseconds part.
This has been reported by several people with different scenarios:
David observed that when stopping a VM with a debugger:
"It was essentially the stopped by debugger case. I forget exactly why,
but the guest was being explicitly stopped from outside, it wasn't just
scheduling lag. I think it was something in the vicinity of 10 minutes
stopped."
When lifting the stop the machine went dead.
The stopped by debugger case is not really interesting, but nevertheless it
would be a good thing not to die completely.
But this was also observed on a live system by Liav:
"When the OS is too overloaded, delta will get a high enough value for the
msb of the sum delta * tkr->mult + tkr->xtime_nsec to be set, and so
after the shift the nsec variable will gain a value similar to
0xffffffffff000000."
Unfortunately this has been reintroduced recently with commit
6bd58f09e1d8
("time: Add cycles to nanoseconds translation"). It had been fixed a year
ago already in commit
35a4933a8959 ("time: Avoid signed overflow in
timekeeping_get_ns()").
Though it's not surprising that the issue has been reintroduced because the
function itself and the whole call chain uses s64 for the result and the
propagation of it. The change in this recent commit is subtle:
s64 nsec;
- nsec = (d * m + n) >> s:
+ nsec = d * m + n;
+ nsec >>= s;
d being type of cycle_t adds another level of obfuscation.
This wouldn't have happened if the previous change to unsigned computation
would have made the 'nsec' variable u64 right away and a follow up patch
had cleaned up the whole call chain.
There have been patches submitted which basically did a revert of the above
patch leaving everything else unchanged as signed. Back to square one. This
spawned a admittedly pointless discussion about potential users which rely
on the unsigned behaviour until someone pointed out that it had been fixed
before. The changelogs of said patches added further confusion as they made
finally false claims about the consequences for eventual users which expect
signed results.
Despite delta being cycle_t, aka. u64, it's very well possible to hand in
a signed negative value and the signed computation will happily return the
correct result. But nobody actually sat down and analyzed the code which
was added as user after the propably unintended signed conversion.
Though in sensitive code like this it's better to analyze it proper and
make sure that nothing relies on this than hunting the subtle wreckage half
a year later. After analyzing all call chains it stands that no caller can
hand in a negative value (which actually would work due to the s64 cast)
and rely on the signed math to do the right thing.
Change the conversion function to unsigned math. The conversion of all call
chains is done in a follow up patch.
This solves the starvation issue, which was caused by the negative result,
but it does not solve the underlying problem. It merily procrastinates
it. When the timekeeper update is deferred long enough that the unsigned
multiplication overflows, then time going backwards is observable again.
It does neither solve the issue of clocksources with a small counter width
which will wrap around possibly several times and cause random time stamps
to be generated. But those are usually not found on systems used for
virtualization, so this is likely a non issue.
I took the liberty to claim authorship for this simply because
analyzing all callsites and writing the changelog took substantially
more time than just making the simple s/s64/u64/ change and ignore the
rest.
Fixes: 6bd58f09e1d8 ("time: Add cycles to nanoseconds translation")
Reported-by: David Gibson <david@gibson.dropbear.id.au>
Reported-by: Liav Rehana <liavr@mellanox.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Parit Bhargava <prarit@redhat.com>
Cc: Laurent Vivier <lvivier@redhat.com>
Cc: "Christopher S. Hall" <christopher.s.hall@intel.com>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: John Stultz <john.stultz@linaro.org>
Link: http://lkml.kernel.org/r/20161208204228.688545601@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linus Walleij [Sat, 12 Nov 2016 14:22:38 +0000 (15:22 +0100)]
regulator: stw481x-vmmc: fix ages old enable error
commit
295070e9aa015abb9b92cccfbb1e43954e938133 upstream.
The regulator has never been properly enabled, it has been
dormant all the time. It's strange that MMC was working
at all, but it likely worked by the signals going through
the levelshifter and reaching the card anyways.
Fixes: 3615a34ea1a6 ("regulator: add STw481x VMMC driver")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Adrian Hunter [Fri, 2 Dec 2016 13:14:20 +0000 (15:14 +0200)]
mmc: sdhci: Fix recovery from tuning timeout
commit
61e53bd0047d58caee0c7170613045bf96de4458 upstream.
Clearing the tuning bits should reset the tuning circuit. However there is
more to do. Reset the command and data lines for good measure, and then
for eMMC ensure the card is not still trying to process a tuning command by
sending a stop command.
Note the JEDEC eMMC specification says the stop command (CMD12) can be used
to stop a tuning command (CMD21) whereas the SD specification is silent on
the subject with respect to the SD tuning command (CMD19). Considering that
CMD12 is not a valid SDIO command, the stop command is sent only when the
tuning command is CMD21 i.e. for eMMC. That addresses cases seen so far
which have been on eMMC.
Note that this replaces the commit
fe5fb2e3b58f ("mmc: sdhci: Reset cmd and
data circuits after tuning failure") which is being reverted for v4.9+.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Dan O'Donovan <dan@emutex.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vittorio Gambaletta (VittGam) [Wed, 9 Nov 2016 01:40:56 +0000 (03:40 +0200)]
ath9k: Really fix LED polarity for some Mini PCI AR9220 MB92 cards.
commit
79e57dd113d307a6c74773b8aaecf5442068988a upstream.
The active_high LED of my Wistron DNMA-92 is still being recognized as
active_low on 4.7.6 mainline. When I was preparing my former commit
0f9edcdd88a9 ("ath9k: Fix LED polarity for some Mini PCI AR9220 MB92
cards.") to fix that I must have somehow messed up with testing, because
I tested the final version of that patch before sending it, and it was
apparently working; but now it is not working on 4.7.6 mainline.
I initially added the PCI_DEVICE_SUB section for 0x0029/0x2096 above the
PCI_VDEVICE section for 0x0029; but then I moved the former below the
latter after seeing how 0x002A sections were sorted in the file.
This turned out to be wrong: if a generic PCI_VDEVICE entry (that has
both subvendor and subdevice IDs set to PCI_ANY_ID) is put before a more
specific one (PCI_DEVICE_SUB), then the generic PCI_VDEVICE entry will
match first and will be used.
With this patch, 0x0029/0x2096 has finally got active_high LED on 4.7.6.
While I'm at it, let's fix 0x002A too by also moving its generic definition
below its specific ones.
Fixes: 0f9edcdd88a9 ("ath9k: Fix LED polarity for some Mini PCI AR9220 MB92 cards.")
Signed-off-by: Vittorio Gambaletta <linuxbugs@vittgam.net>
[kvalo@qca.qualcomm.com: improve the commit log based on email discussions]
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johannes Berg [Thu, 8 Dec 2016 16:22:09 +0000 (17:22 +0100)]
cfg80211/mac80211: fix BSS leaks when abandoning assoc attempts
commit
e6f462df9acd2a3295e5d34eb29e2823220cf129 upstream.
When mac80211 abandons an association attempt, it may free
all the data structures, but inform cfg80211 and userspace
about it only by sending the deauth frame it received, in
which case cfg80211 has no link to the BSS struct that was
used and will not cfg80211_unhold_bss() it.
Fix this by providing a way to inform cfg80211 of this with
the BSS entry passed, so that it can clean up properly, and
use this ability in the appropriate places in mac80211.
This isn't ideal: some code is more or less duplicated and
tracing is missing. However, it's a fairly small change and
it's thus easier to backport - cleanups can come later.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Larry Finger [Sat, 26 Nov 2016 20:43:35 +0000 (14:43 -0600)]
rtlwifi: Fix enter/exit power_save
commit
ba9f93f82abafe2552eac942ebb11c2df4f8dd7f upstream.
In commit
a5ffbe0a1993 ("rtlwifi: Fix scheduling while atomic bug") and
commit
a269913c52ad ("rtlwifi: Rework rtl_lps_leave() and rtl_lps_enter()
to use work queue"), an error was introduced in the power-save routines
due to the fact that leaving PS was delayed by the use of a work queue.
This problem is fixed by detecting if the enter or leave routines are
in interrupt mode. If so, the workqueue is used to place the request.
If in normal mode, the enter or leave routines are called directly.
Fixes: a269913c52ad ("rtlwifi: Rework rtl_lps_leave() and rtl_lps_enter() to use work queue")
Reported-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Larry Finger [Sat, 5 Nov 2016 19:08:57 +0000 (14:08 -0500)]
ssb: Fix error routine when fallback SPROM fails
commit
8052d7245b6089992343c80b38b14dbbd8354651 upstream.
When there is a CRC error in the SPROM read from the device, the code
attempts to handle a fallback SPROM. When this also fails, the driver
returns zero rather than an error code.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jacob Chen [Fri, 6 Jan 2017 10:49:52 +0000 (18:49 +0800)]
ARM: configs: rockchip_linux: enable usb-otg related config
This adds select below config for usb-otg:
CONFIG_USB_GADGET_DEBUG_FILES
CONFIG_USB_GADGET_VBUS_DRAW=500
CONFIG_USB_CONFIGFS_UEVENT
Change-Id: Ida3cfc9933125b43a12b75d48b74f81ed95f4f33
Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com>
Alex Shi [Mon, 9 Jan 2017 04:01:35 +0000 (12:01 +0800)]
Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android
Alex Shi [Mon, 9 Jan 2017 04:01:31 +0000 (12:01 +0800)]
Merge tag 'v4.4.40' into linux-linaro-lsk-v4.4
This is the 4.4.40 stable release