Greg Kroah-Hartman [Wed, 24 Jul 2013 16:07:32 +0000 (09:07 -0700)]
Merge tag 'for-usb-next-2013-07-23' of git://git./linux/kernel/git/sarah/xhci into usb-next
Sarah writes:
xhci: Features for 3.12
In the spirit of "let's stop gossiping around the water cooler and get to work",
here's some xHCI patches for 3.12.
They include a patch for suspend/resume support for xhci platform hosts, two
patches to support showing USB 2.1 link status, and a patch to future-proof the
Intel EHCI to xHCI port switchover.
Sarah Sharp
Steven Rostedt (Red Hat) [Wed, 24 Jul 2013 02:06:15 +0000 (22:06 -0400)]
ftrace: Add check for NULL regs if ops has SAVE_REGS set
If a ftrace ops is registered with the SAVE_REGS flag set, and there's
already a ops registered to one of its functions but without the
SAVE_REGS flag, there's a small race window where the SAVE_REGS ops gets
added to the list of callbacks to call for that function before the
callback trampoline gets set to save the regs.
The problem is, the function is not currently saving regs, which opens
a small race window where the ops that is expecting regs to be passed
to it, wont. This can cause a crash if the callback were to reference
the regs, as the SAVE_REGS guarantees that regs will be set.
To fix this, we add a check in the loop case where it checks if the ops
has the SAVE_REGS flag set, and if so, it will ignore it if regs is
not set.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Oleg Nesterov [Tue, 23 Jul 2013 15:26:13 +0000 (17:26 +0200)]
tracing: Kill trace_cpu struct/members
After the previous changes trace_array_cpu->trace_cpu and
trace_array->trace_cpu becomes write-only. Remove these members
and kill "struct trace_cpu" as well.
As a side effect this also removes memset(per_cpu_memory, 0).
It was not needed, alloc_percpu() returns zero-filled memory.
Link: http://lkml.kernel.org/r/20130723152613.GA23741@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Oleg Nesterov [Tue, 23 Jul 2013 15:26:10 +0000 (17:26 +0200)]
tracing: Change tracing_fops/snapshot_fops to rely on tracing_get_cpu()
tracing_open() and tracing_snapshot_open() are racy, the memory
inode->i_private points to can be already freed.
Convert these last users of "inode->i_private == trace_cpu" to
use "i_private = trace_array" and rely on tracing_get_cpu().
v2: incorporate the fix from Steven, tracing_release() must not
blindly dereference file->private_data unless we know that
the file was opened for reading.
Link: http://lkml.kernel.org/r/20130723152610.GA23737@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Oleg Nesterov [Tue, 23 Jul 2013 15:26:06 +0000 (17:26 +0200)]
tracing: Change tracing_entries_fops to rely on tracing_get_cpu()
tracing_open_generic_tc() is racy, the memory inode->i_private
points to can be already freed.
1. Change its last user, tracing_entries_fops, to use
tracing_*_generic_tr() instead.
2. Change debugfs_create_file("buffer_size_kb", data) callers
to pass "data = tr".
3. Change tracing_entries_read() and tracing_entries_write() to
use tracing_get_cpu().
4. Kill the no longer used tracing_open_generic_tc() and
tracing_release_generic_tc().
Link: http://lkml.kernel.org/r/20130723152606.GA23730@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Oleg Nesterov [Tue, 23 Jul 2013 15:26:03 +0000 (17:26 +0200)]
tracing: Change tracing_stats_fops to rely on tracing_get_cpu()
tracing_open_generic_tc() is racy, the memory inode->i_private
points to can be already freed.
1. Change one of its users, tracing_stats_fops, to use
tracing_*_generic_tr() instead.
2. Change trace_create_cpu_file("stats", data) to pass "data = tr".
3. Change tracing_stats_read() to use tracing_get_cpu().
Link: http://lkml.kernel.org/r/20130723152603.GA23727@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Oleg Nesterov [Tue, 23 Jul 2013 15:26:00 +0000 (17:26 +0200)]
tracing: Change tracing_buffers_fops to rely on tracing_get_cpu()
tracing_buffers_open() is racy, the memory inode->i_private points
to can be already freed.
Change debugfs_create_file("trace_pipe_raw", data) caller to pass
"data = tr", tracing_buffers_open() can use tracing_get_cpu().
Change debugfs_create_file("snapshot_raw_fops", data) caller too,
this file uses tracing_buffers_open/release.
Link: http://lkml.kernel.org/r/20130723152600.GA23720@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Oleg Nesterov [Tue, 23 Jul 2013 15:25:57 +0000 (17:25 +0200)]
tracing: Change tracing_pipe_fops() to rely on tracing_get_cpu()
tracing_open_pipe() is racy, the memory inode->i_private points to
can be already freed.
Change debugfs_create_file("trace_pipe", data) callers to to pass
"data = tr", tracing_open_pipe() can use tracing_get_cpu().
Link: http://lkml.kernel.org/r/20130723152557.GA23717@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Oleg Nesterov [Tue, 23 Jul 2013 15:25:54 +0000 (17:25 +0200)]
tracing: Introduce trace_create_cpu_file() and tracing_get_cpu()
Every "file_operations" used by tracing_init_debugfs_percpu is buggy.
f_op->open/etc does:
1. struct trace_cpu *tc = inode->i_private;
struct trace_array *tr = tc->tr;
2. trace_array_get(tr) or fail;
3. do_something(tc);
But tc (and tr) can be already freed before trace_array_get() is called.
And it doesn't matter whether this file is per-cpu or it was created by
init_tracer_debugfs(), free_percpu() or kfree() are equally bad.
Note that even 1. is not safe, the freed memory can be unmapped. But even
if it was safe trace_array_get() can wrongly succeed if we also race with
the next new_instance_create() which can re-allocate the same tr, or tc
was overwritten and ->tr points to the valid tr. In this case 3. uses the
freed/reused memory.
Add the new trivial helper, trace_create_cpu_file() which simply calls
trace_create_file() and encodes "cpu" in "struct inode". Another helper,
tracing_get_cpu() will be used to read cpu_nr-or-RING_BUFFER_ALL_CPUS.
The patch abuses ->i_cdev to encode the number, it is never used unless
the file is S_ISCHR(). But we could use something else, say, i_bytes or
even ->d_fsdata. In any case this hack is hidden inside these 2 helpers,
it would be trivial to change them if needed.
This patch only changes tracing_init_debugfs_percpu() to use the new
trace_create_cpu_file(), the next patches will change file_operations.
Note: tracing_get_cpu(inode) is always safe but you can't trust the
result unless trace_array_get() was called, without trace_types_lock
which acts as a barrier it can wrongly return RING_BUFFER_ALL_CPUS.
Link: http://lkml.kernel.org/r/20130723152554.GA23710@redhat.com
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Sachin Kamat [Wed, 24 Jul 2013 09:55:27 +0000 (18:55 +0900)]
ARM: EXYNOS: Update CONFIG_ARCH_NR_GPIO for Exynos
With the recent cleanup in Exynos platform code notably commits
17859bec ("ARM: EXYNOS: Do not select legacy Kconfig symbols any
more") and
b9222210 ("ARM: EXYNOS: Remove mach/gpio.h"), the definition
of ARCH_NR_GPIOS got removed. This started causing problems on SoCs like
Exynos4412 which have more than the default number of GPIOs. Thus define
this number in KConfig file which takes care of current SoC requirements
and provides scope for GPIO expanders. Without this patch we get the
following errors during boot:
gpiochip_add: gpios 251..258 (gpv0) failed to register
samsung-pinctrl
106e0000.pinctrl: failed to register gpio_chip gpv0, error code: -22
samsung-pinctrl: probe of
106e0000.pinctrl failed with error -22
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Takashi Iwai [Wed, 24 Jul 2013 09:42:34 +0000 (11:42 +0200)]
Merge tag 'asoc-v3.11-rc2' of git://git./linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v3.11
A few small updates again, the sgtl5000 one fixes some newly triggered
issues due to some probe ordering changes which were introduced in the
last merge window.
Eldad Zack [Tue, 23 Jul 2013 09:15:06 +0000 (11:15 +0200)]
ALSA: hiface: return correct XRUN indication
Return SNDRV_PCM_POS_XRUN (snd_pcm_uframes_t) instead of
SNDRV_PCM_STATE_XRUN (snd_pcm_state_t) from the pointer
function of hiface, as expected by snd_pcm_update_hw_ptr0().
Caught by sparse.
Cc: Antonio Ospite <ospite@studenti.unina.it>
Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Yadwinder Singh Brar [Wed, 24 Jul 2013 08:05:32 +0000 (17:05 +0900)]
ARM: EXYNOS: Fix low level debug support
Presently, using exynos_defconfig with CONFIG_DEBUG_LL and CONFIG_EARLY_PRIN
on, kernel is not booting, we are getting following:
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] kernel BUG at mm/vmalloc.c:1134!
[ 0.000000] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.11.0-rc1 #633
[ 0.000000] task:
c052ec48 ti:
c0524000 task.ti:
c0524000
[ 0.000000] PC is at vm_area_add_early+0x54/0x94
[ 0.000000] LR is at add_static_vm_early+0xc/0x60
Its because exynos[4/5]_map_io() function ioremaps a single 512KB memory
size for all the four uart ports which envelopes the mapping created by
debug_ll_io_init(), called earlier in exynos_init_io().
This patch removes iodesc entries for UART controller for all Samsung SoC's,
since now the Samsung uart driver does a ioremap during probe and any needed
iomapping for earlyprintk will be handled by debug_ll_io_init().
Tested on smdk4412 and smdk5250.
Signed-off-by: Yadwinder Singh Brar <yadi.brar@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Yadwinder Singh Brar [Wed, 24 Jul 2013 08:05:07 +0000 (17:05 +0900)]
ARM: SAMSUNG: Save/restore only selected uart's registers
Basically this code gets executed only during debugging i.e when
DEBUG_LL & SAMSUNG_PM_DEBUG is on, so required only for UART used
for debugging. Since we are removing static iodesc entries for UARTs,
so now only the selected (CONFIG_DEBUG_S3C_UART) UART will be
ioremapped by the debug_ll_io_init() for DEBUG_LL, so save/restore
uart registers only for selected uart.
Signed-off-by: Yadwinder Singh Brar <yadi.brar@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Herbert Xu [Wed, 24 Jul 2013 07:04:16 +0000 (17:04 +1000)]
Revert "crypto: crct10dif - Wrap crc_t10dif function all to use crypto transform framework"
This reverts commits
67822649d7305caf3dd50ed46c27b99c94eff996
39761214eefc6b070f29402aa1165f24d789b3f7
0b95a7f85718adcbba36407ef88bba0a7379ed03
31d939625a9a20b1badd2d4e6bf6fd39fa523405
2d31e518a42828df7877bca23a958627d60408bc
Unfortunately this change broke boot on some systems that used an
initrd which does not include the newly created crct10dif modules.
As these modules are required by sd_mod under certain configurations
this is a serious problem.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Amit Daniel Kachhap [Wed, 24 Jul 2013 05:06:13 +0000 (14:06 +0900)]
ARM: SAMSUNG: Add SAMSUNG_PM config option to select pm
This patch enables the selection of samsung pm related stuffs
when SAMSUNG_PM config is enabled and not just when generic PM
config is enabled. Power management for s3c64XX and s3c24XX
is enabled by default and for other platform depends on S5P_PM.
This patch also fixes the following compilation error's when compiling
a platform like exynos5440 which does not select pm stuffs.
arch/arm/mach-exynos/built-in.o: In function '__virt_to_phys':
linux/arch/arm/include/asm/memory.h:175: undefined reference to 's3c_cpu_resume'
linux/arch/arm/include/asm/memory.h:175: undefined reference to 's3c_cpu_resume'
linux/arch/arm/include/asm/memory.h:175: undefined reference to 's3c_cpu_resume'
linux/arch/arm/include/asm/memory.h:175: undefined reference to 's3c_cpu_resume'
arch/arm/mach-exynos/built-in.o: In function 'exynos5_init_irq':
linux/arch/arm/mach-exynos/common.c:492: undefined reference to 's3c_irq_wake'
linux/arch/arm/mach-exynos/common.c:492: undefined reference to 's3c_irq_wake'
arch/arm/mach-exynos/built-in.o: In function 'exynos4_init_irq':
linux/arch/arm/mach-exynos/common.c:476: undefined reference to 's3c_irq_wake'
linux/arch/arm/mach-exynos/common.c:476: undefined reference to 's3c_irq_wake'
arch/arm/plat-samsung/built-in.o: In function 's3c_irqext_wake':
linux/arch/arm/plat-samsung/pm.c:144: undefined reference to 's3c_irqwake_eintallow'
linux/arch/arm/plat-samsung/pm.c:144: undefined reference to 's3c_irqwake_eintallow'
arch/arm/plat-samsung/built-in.o: In function 's3c_pm_enter':
linux/arch/arm/plat-samsung/pm.c:263: undefined reference to 's3c_irqwake_intallow'
linux/arch/arm/plat-samsung/pm.c:263: undefined reference to 's3c_irqwake_intallow'
linux/arch/arm/plat-samsung/pm.c:264: undefined reference to 's3c_irqwake_eintallow'
linux/arch/arm/plat-samsung/pm.c:264: undefined reference to 's3c_irqwake_eintallow'
linux/arch/arm/plat-samsung/pm.c:275: undefined reference to 's3c_pm_save_core'
linux/arch/arm/plat-samsung/pm.c:279: undefined reference to 's3c_pm_configure_extint'
linux/arch/arm/plat-samsung/pm.c:310: undefined reference to 's3c_pm_restore_core'
make: *** [vmlinux] Error 1
Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Anshuman Khandual [Mon, 10 Jun 2013 05:53:29 +0000 (11:23 +0530)]
powerpc/perf: BHRB filter configuration should follow the task
When the task moves around the system, the corresponding cpuhw
per cpu strcuture should be popullated with the BHRB filter
request value so that PMU could be configured appropriately with
that during the next call into power_pmu_enable().
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Anshuman Khandual [Mon, 10 Jun 2013 05:53:28 +0000 (11:23 +0530)]
powerpc/perf: Ignore separate BHRB privilege state filter request
Completely ignore BHRB privilege state filter request as we are
already configuring that with privilege state filtering attribute
for the accompanying PMU event. This would help achieve cleaner
user space interaction for BHRB.
This patch fixes a situation like this
Before patch:-
------------
./perf record -j any -e branch-misses:k ls
Error:
The sys_perf_event_open() syscall returned with 95 (Operation not
supported) for event (branch-misses:k).
/bin/dmesg may provide additional information.
No CONFIG_PERF_EVENTS=y kernel support configured?
Here 'perf record' actually copies over ':k' filter request into BHRB
privilege state filter config and our previous check in kernel would
fail that.
After patch:-
-------------
./perf record -j any -e branch-misses:k ls
perf perf.data perf.data.old test-mmap-ring
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.002 MB perf.data (~102 samples)]
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Bjorn Helgaas [Tue, 2 Jul 2013 18:20:03 +0000 (12:20 -0600)]
powerpc/powernv: Mark pnv_pci_init_ioda2_phb() as __init
Mark pnv_pci_init_ioda2_phb() as __init. It is called only from an
init function (pnv_pci_init()), and it calls an init function
(pnv_pci_init_ioda_phb()):
pnv_pci_init # init
pnv_pci_init_ioda2_phb # non-init
pnv_pci_init_ioda_phb # init
This should fix a section mismatch warning.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Aneesh Kumar K.V [Thu, 4 Jul 2013 05:04:45 +0000 (10:34 +0530)]
powerpc/mm: Use the correct SLB(LLP) encoding in tlbie instruction
The sllp value is stored in mmu_psize_defs in such a way that we can easily OR
the value to get the operand for slbmte instruction. ie, the L and LP bits are
not contiguous. Decode the bits and use them correctly in tlbie.
regression is introduced by
1f6aaaccb1b3af8613fe45781c1aefee2ae8c6b3
"powerpc: Update tlbie/tlbiel as per ISA doc"
Reported-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Aneesh Kumar K.V [Wed, 3 Jul 2013 08:20:03 +0000 (13:50 +0530)]
powerpc/mm: Fix fallthrough bug in hpte_decode
We should not fallthrough different case statements in hpte_decode. Add
break statement to break out of the switch. The regression is introduced by
dcda287a9b26309ae43a091d0ecde16f8f61b4c0 "powerpc/mm: Simplify hpte_decode"
Reported-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Denis Kirjanov [Tue, 23 Jul 2013 11:28:03 +0000 (15:28 +0400)]
powerpc/pseries: Fix a typo in pSeries_lpar_hpte_insert()
Commit
801eb73f45371accc78ca9d6d22d647eeb722c11 introduced
a bug while checking PTE flags. We have to drop the _PAGE_COHERENT flag
when __PAGE_NO_CACHE is set and the cache update policy is not write-through
(i.e. _PAGE_WRITETHRU is not set)
Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
CC: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Sylwester Nawrocki [Wed, 24 Jul 2013 04:23:51 +0000 (13:23 +0900)]
ARM: S3C24XX: Add missing clkdev entries for s3c2440 UART
This patch restores serial port operation which has been broken since
commit
60e93575476f ("serial: samsung: enable clock before clearing
pending interrupts during init")
That commit only uncovered the real issue which was missing clkdev
entries for the "uart" clocks on S3C2440. It went unnoticed so far
because return value of clk API calls were not being checked at all
in the samsung serial port driver.
This patch should be backported to at least 3.10 stable kernel, since
the serial port has not been working on s3c2440 since 3.10-rc5.
Cc: Chander Kashyap <chander.kashyap@linaro.org>
Signed-off-by: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
[on S3C2440 SoC based Mini2440 board]
Tested-by: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Tested-by: Juergen Beisert <jbe@pengutronix.de>
Cc: <stable@vger.kernel.org> [3.10]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Gavin Shan [Wed, 24 Jul 2013 02:25:01 +0000 (10:25 +0800)]
powerpc/eeh: Introdce flag to protect sysfs
The patch introduces flag EEH_DEV_SYSFS to keep track that the sysfs
entries for the corresponding EEH device (then PCI device) has been
added or removed, in order to avoid race condition.
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Gavin Shan [Wed, 24 Jul 2013 02:25:00 +0000 (10:25 +0800)]
powerpc/eeh: Fix unbalanced enable for IRQ
The patch fixes following issue:
Unbalanced enable for IRQ 23
------------[ cut here ]------------
WARNING: at kernel/irq/manage.c:437
:
NIP [
c00000000016de8c] .__enable_irq+0x11c/0x140
LR [
c00000000016de88] .__enable_irq+0x118/0x140
Call Trace:
[
c000003ea1f23880] [
c00000000016de88] .__enable_irq+0x118/0x140 (unreliable)
[
c000003ea1f23910] [
c00000000016df08] .enable_irq+0x58/0xa0
[
c000003ea1f239a0] [
c0000000000388b4] .eeh_enable_irq+0xc4/0xe0
[
c000003ea1f23a30] [
c000000000038a28] .eeh_report_reset+0x78/0x130
[
c000003ea1f23ac0] [
c000000000037508] .eeh_pe_dev_traverse+0x98/0x170
[
c000003ea1f23b60] [
c0000000000391ac] .eeh_handle_normal_event+0x2fc/0x3d0
[
c000003ea1f23bf0] [
c000000000039538] .eeh_handle_event+0x2b8/0x2c0
[
c000003ea1f23c90] [
c000000000039600] .eeh_event_handler+0xc0/0x170
[
c000003ea1f23d30] [
c0000000000da9a0] .kthread+0xf0/0x100
[
c000003ea1f23e30] [
c00000000000a1dc] .ret_from_kernel_thread+0x5c/0x80
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Gavin Shan [Wed, 24 Jul 2013 02:24:59 +0000 (10:24 +0800)]
powerpc/eeh: Don't use pci_dev during BAR restore
While restoring BARs for one specific PCI device, the pci_dev
instance should have been released. So it's not reliable to use
the pci_dev instance on restoring BARs. However, we still need
some information (e.g. PCIe capability position, header type) from
the pci_dev instance. So we have to store those information to
EEH device in advance.
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Gavin Shan [Wed, 24 Jul 2013 02:24:58 +0000 (10:24 +0800)]
powerpc/eeh: Use partial hotplug for EEH unaware drivers
When EEH error happens to one specific PE, some devices with drivers
supporting EEH won't except hotplug on the device. However, there
might have other deivces without driver, or with driver without EEH
support. For the case, we need do partial hotplug in order to make
sure that the PE becomes absolutely quite during reset. Otherise,
the PE reset might fail and leads to failure of error recovery.
The current code doesn't handle that 'mixed' case properly, it either
uses the error callbacks to the drivers, or tries hotplug, but doesn't
handle a PE (EEH domain) composed of a combination of the two.
The patch intends to support so-called "partial" hotplug for EEH:
Before we do reset, we stop and remove those PCI devices without
EEH sensitive driver. The corresponding EEH devices are not detached
from its PE, but with special flag. After the reset is done, those
EEH devices with the special flag will be scanned one by one.
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Gavin Shan [Wed, 24 Jul 2013 02:24:57 +0000 (10:24 +0800)]
powerpc/pci: Partial tree hotplug support
When EEH error happens to one specific PE, the device drivers
of its attached EEH devices (PCI devices) are checked to see
the further action: reset with complete hotplug, or reset without
hotplug. However, that's not enough for those PCI devices whose
drivers can't support EEH, or those PCI devices without driver.
So we need do so-called "partial hotplug" on basis of PCI devices.
In the situation, part of PCI devices of the specific PE are
unplugged and plugged again after PE reset.
The patch changes pcibios_add_pci_devices() so that it can support
full hotplug and so-called "partial" hotplug based on device-tree
or real hardware. It's notable that pci_of_scan.c has been changed
for a bit in order to support the "partial" hotplug based on dev-tree.
Most of the generic code already supports that, we just need to
plumb it properly on our side.
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Gavin Shan [Wed, 24 Jul 2013 02:24:56 +0000 (10:24 +0800)]
powerpc/eeh: Use safe list traversal when walking EEH devices
Currently, we're trasversing the EEH devices list using list_for_each_entry().
That's not safe enough because the EEH devices might be removed from
its parent PE while doing iteration. The patch replaces that with
list_for_each_entry_safe().
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Gavin Shan [Wed, 24 Jul 2013 02:24:55 +0000 (10:24 +0800)]
powerpc/eeh: Keep PE during hotplug
When we do normal hotplug, the PE (shadow EEH structure) shouldn't be
kept around.
However, we need to keep it if the hotplug an artifial one caused by
EEH errors recovery.
Since we remove EEH device through the PCI hook pcibios_release_device(),
the flag "purge_pe" passed to various functions is meaningless. So the patch
removes the meaningless flag and introduce new flag "EEH_PE_KEEP"
to save the PE while doing hotplug during EEH error recovery.
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Gavin Shan [Wed, 24 Jul 2013 02:24:54 +0000 (10:24 +0800)]
powerpc/pci/hotplug: Don't need to remove from EEH cache twice
Since pcibios_release_device() called by pci_stop_and_remove_bus_device()
has removed the device from the EEH cache, we needn't do that again.
Cc: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Gavin Shan [Wed, 24 Jul 2013 02:24:53 +0000 (10:24 +0800)]
powerpc/pci: Override pcibios_release_device()
The patch overrides pcibios_release_device() to release EEH
resources (EEH cache, unbinding EEH device) for the indicated PCI
device.
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Gavin Shan [Wed, 24 Jul 2013 02:24:52 +0000 (10:24 +0800)]
powerpc/eeh: Export functions for hotplug
Make some functions public in order to support hotplug on either specific
PCI bus or PCI device in future.
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Gavin Shan [Wed, 24 Jul 2013 02:24:51 +0000 (10:24 +0800)]
powerpc/eeh: Remove reference to PCI device
We will rely on pcibios_release_device() to remove the EEH cache
and unbind EEH device for the specific PCI device. So we shouldn't
hold the reference to the PCI device from EEH cache and EEH device.
Otherwise, pcibios_release_device() won't be called as we expected.
The patch removes the reference to the PCI device in EEH core.
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Mahesh Salgaonkar [Wed, 10 Jul 2013 13:02:56 +0000 (18:32 +0530)]
powerpc: Fix the corrupt r3 error during MCE handling.
During Machine Check interrupt on pseries platform, R3 generally points to
memory region inside RTAS (FWNMI) area. We see r3 corruption because when RTAS
delivers the machine check exception it passes the address inside FWNMI area
with the top most bit set. This patch fixes this issue by masking top two bit
in machine check exception handler.
Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Michael Ellerman [Sat, 13 Jul 2013 02:53:40 +0000 (12:53 +1000)]
powerpc/perf: Set PPC_FEATURE2_EBB when we register the power8 PMU
The presence or absence of EBB is advertised to userspace via the presence
or absence of PPC_FEATURE2_EBB in cpu_user_features2.
Because the kernel can be built without PMU support, we should only add
PPC_FEATURE2_EBB to cpu_user_features2 when we successfully register the
power8 PMU support.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Paul Bolle [Sun, 14 Jul 2013 11:02:15 +0000 (13:02 +0200)]
powerpc/pseries: Drop "select HOTPLUG"
The Kconfig symbol HOTPLUG was removed with commit
40b313608a ("Finally
eradicate CONFIG_HOTPLUG"). But there's still one select statement for
that symbol. It seems that select statement was added after the patch to
remove CONFIG_HOTPLUG was submitted. Anyhow, it is useless and can be
dropped.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Tiejun Chen [Mon, 15 Jul 2013 02:36:04 +0000 (10:36 +0800)]
powerpc: Access local paca after hard irq disabled
In hard_irq_disable(), we accessed the PACA before we hard disabled
the interrupts, potentially causing a warning as get_paca() will
us debug_smp_processor_id().
Move that to after the disabling, and also use local_paca directly
rather than get_paca() to avoid several redundant and useless checks.
Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Anton Blanchard [Mon, 15 Jul 2013 04:04:50 +0000 (14:04 +1000)]
powerpc/modules: Module CRC relocation fix causes perf issues
Module CRCs are implemented as absolute symbols that get resolved by
a linker script. We build an intermediate .o that contains an
unresolved symbol for each CRC. genksysms parses this .o, calculates
the CRCs and writes a linker script that "resolves" the symbols to
the calculated CRC.
Unfortunately the ppc64 relocatable kernel sees these CRCs as symbols
that need relocating and relocates them at boot. Commit
d4703aef
(module: handle ppc64 relocating kcrctabs when CONFIG_RELOCATABLE=y)
added a hook to reverse the bogus relocations. Part of this patch
created a symbol at 0x0:
# head -2 /proc/kallsyms
0000000000000000 T reloc_start
c000000000000000 T .__start
This reloc_start symbol is causing lots of confusion to perf. It
thinks reloc_start is a massive function that stretches from 0x0 to
0xc000000000000000 and we get various cryptic errors out of perf,
including:
problem incrementing symbol count, skipping event
This patch removes the reloc_start linker script label and instead
defines it as PHYSICAL_START. We also need to wrap it with
CONFIG_PPC64 because the ppc32 kernel can set a non zero
PHYSICAL_START at compile time and we wouldn't want to subtract
it from the CRCs in that case.
Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Michael Neuling [Thu, 18 Jul 2013 01:31:51 +0000 (11:31 +1000)]
powerpc: Add second POWER8 PVR entry
POWER8 comes with two different PVRs. This patch enables the additional
PVR in the cputable.
The existing entry (PVR=0x4b) is renamed to POWER8E and the new entry
(PVR=0x4d) is given POWER8.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Linus Torvalds [Wed, 24 Jul 2013 02:43:55 +0000 (19:43 -0700)]
Merge tag 'please-pull-bp-edac' of git://git./linux/kernel/git/ras/ras
Pull EDAC fix from Tony Luck:
"Fix EDAC lockdep splat"
* tag 'please-pull-bp-edac' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC: Fix lockdep splat
Tomas Winkler [Wed, 17 Jul 2013 12:13:17 +0000 (15:13 +0300)]
mei: me: fix waiting for hw ready
1. MEI_INTEROP_TIMEOUT is in seconds not in jiffies
so we use mei_secs_to_jiffies macro
While cold boot is fast this is relevant in resume
2. wait_event_interruptible_timeout can return with
-ERESTARTSYS so do not override it with -ETIMEDOUT
3.Adjust error message
Tested-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tomas Winkler [Wed, 17 Jul 2013 12:13:16 +0000 (15:13 +0300)]
mei: don't have to clean the state on power up
When powering up, we don't have to clean up the device state
nothing is connected.
Tested-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tomas Winkler [Wed, 17 Jul 2013 12:13:15 +0000 (15:13 +0300)]
mei: me: fix reset state machine
ME HW ready bit is down after hw reset was asserted or on error.
Only on error we need to enter the reset flow, additional reset
need to be prevented when reset was triggered during
initialization , power up/down or a reset is already in progress
Tested-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tomas Winkler [Wed, 17 Jul 2013 12:13:14 +0000 (15:13 +0300)]
mei: hbm: fix typo in error message
writet -> write
Tested-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dave Airlie [Tue, 23 Jul 2013 04:16:42 +0000 (14:16 +1000)]
qxl: convert qxl driver to proper use for reservations
The recent addition of lockdep support to reservations and their subsequent
use by TTM showed up a number of potential problems with the way qxl was using
TTM objects.
a) it was allocating objects, and reserving them later without validating
underneath the reservation, which meant in extreme conditions the objects could
be evicted before the reservation ever used them.
b) it was reserving objects straight after allocating them, but with no
ability to back off should the reservations fail. It now allocates the necessary
objects then does a complete reservation pass on them to avoid deadlocks.
c) it had two lists per release tracking objects, unnecessary complicating
the reservation process.
This patch removes the dual object tracking, adds reservations ticket support
to the release and fence object handling. It then ports the internal fb
drawing code and the userspace facing ioctl to use the new interfaces properly,
along with cleanup up the error path handling in some codepaths.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Dave Airlie [Tue, 23 Jul 2013 04:06:07 +0000 (14:06 +1000)]
qxl: allow creation of pre-pinned objects and use for releases.
In order to fix an issue with reservations we need to create the releases
as pre-pinned objects, this changes the placement interface and bo creation
interface to allow creating pinned objects to save nested reservations later.
This is just a stepping stone to main fix which follows to actually fix how
qxl deals with reservations.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Dave Airlie [Mon, 22 Jul 2013 04:37:39 +0000 (14:37 +1000)]
drm/qxl: add delayed fb operations
Due to the nature of qxl hw we cannot queue operations while in an irq
context, so we queue these operations as best we can until atomic allocations
fail, and dequeue them later in a work queue.
Daniel looked over the locking on the list and agrees it should be sufficent.
The atomic allocs use no warn, as the last thing we want if we haven't memory
to allocate space for a printk in an irq context is more printks.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Greg Kroah-Hartman [Fri, 28 Jun 2013 18:33:03 +0000 (11:33 -0700)]
USB: sl811: remove CONFIG_USB_DEBUG dependency
This removes the dependency of the driver on CONFIG_USB_DEBUG and moves
it to us the dynamic debug subsystem instead. Bonus is the fact that we
can now properly determine the exact hardware that is spitting out the
messages.
This lets debugging be enabled without having to rebuild the driver, an
important thing for users that can not do it.
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Fri, 28 Jun 2013 18:33:02 +0000 (11:33 -0700)]
USB: isp116x: remove dependency on CONFIG_USB_DEBUG
Move all debugging messages in the driver to use the dynamic debug
subsystem, and not rely on CONFIG_USB_DEBUG to turn them on or off.
This lets debugging be enabled without having to rebuild the driver, an
important thing for users that can not do it.
It also removes the pointless IRQ_TEST() macro, as that was totally
useless and obviously never used.
Cc: Olav Kongas <ok@artecdesign.ee>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Fri, 28 Jun 2013 18:33:01 +0000 (11:33 -0700)]
USB: isp1362: remove CONFIG_USB_DEBUG dependency
Now that the debugging macros are cleaned up, just rely on the dynamic
debug code in the kernel to do the debug messages for the driver.
This lets debugging be enabled without having to rebuild the driver, an
important thing for users that can not do it.
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Fri, 28 Jun 2013 18:33:00 +0000 (11:33 -0700)]
USB: isp1362: remove _DBG() usage
If you want a debug call, just make it, so move to using the
already-there DBG() call. No need to make things more complex than they
really need to be.
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Fri, 28 Jun 2013 18:32:59 +0000 (11:32 -0700)]
USB: isp1362: remove unused _WARN_ON() calls
Like _BUG_ON(), _WARN_ON() wasn't ever being used, so just delete it, as
obviously things are working properly now (if not, we have bigger
problems...)
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Fri, 28 Jun 2013 18:32:58 +0000 (11:32 -0700)]
USB: isp1362: remove unused _BUG_ON() calls
We shouldn't ever panic in a driver, and these calls were never being
used, so just delete them, as obviously the driver is working properly
now (right?)
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Fri, 28 Jun 2013 18:32:57 +0000 (11:32 -0700)]
USB: gadget: fix up comment
This endif is for CONFIG_USB_GADGET_DEBUG_FILES, not CONFIG_USB_DEBUG,
so document it properly.
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Fri, 28 Jun 2013 18:32:56 +0000 (11:32 -0700)]
USB: phy: remove CONFIG_USB_DEBUG usage
Now that no USB phy driver is using CONFIG_USB_DEBUG, remove it from the
Makefile.
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Fri, 28 Jun 2013 18:32:55 +0000 (11:32 -0700)]
USB: phy: remove custom DBG macro
Use the in-kernel pr_debug() calls instead of trying to roll your own
DBG macro. This means the dynamic debugging calls now work here, and
there is no dependency on CONFIG_USB_DEBUG for the phy code anymore.
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Fri, 28 Jun 2013 18:32:54 +0000 (11:32 -0700)]
USB: usbatm: remove CONFIG_USB_DEBUG dependancy
Now that no USB atm driver is relying on the CONFIG_USB_DEBUG option
(well, really the DEBUG option, thanks to some Makefile fun), remove it
from the Makefile.
Also remove two last vestiges of DEBUG in the usbatm.c driver, moving
one to VERBOSE_DEBUG, which no one ever really cares about, and the
other to use the dynamic debug subsystem.
Cc: Duncan Sands <duncan.sands@free.fr>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Fri, 28 Jun 2013 18:32:53 +0000 (11:32 -0700)]
USB: usbatm: move the atm_dbg() call to use dynamic debug
Move the atm_dbg() call to use the dynamic debug subsystem, and not rely
on CONFIG_USB_DEBUG for if things should be printed out or not.
This also means the drivers do not have to be rebuilt to get debugging
messages, important for getting information from users who can not
rebuild their kernels.
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Fri, 28 Jun 2013 18:32:52 +0000 (11:32 -0700)]
USB: usbatm: don't rely on CONFIG_USB_DEBUG
Enable the USB atm drivers to use the dynamic debugging subsystem, and
not rely on if CONFIG_USB_DEBUG is enabled or not for debugging
messages. This also provides a saner debug message, pointing out the
exact device the message is coming from.
This also means the drivers do not have to be rebuilt to get debugging
messages, important for getting information from users who can not
rebuild their kernels.
Cc: Duncan Sands <duncan.sands@free.fr>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Fri, 28 Jun 2013 18:32:51 +0000 (11:32 -0700)]
USB: usbatm: remove unneeded trace printk calls
We have an in-kernel trace subsystem, so use that instead of printk for
trying to figure out what functions are being called.
Cc: Duncan Sands <duncan.sands@free.fr>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Fri, 28 Jun 2013 18:32:50 +0000 (11:32 -0700)]
USB: usbatm: remove unused UDSL_ASSERT macro
If this code isn't triggering this assert by now, it never will, so just
remove it, it's pointless.
Cc: Duncan Sands <duncan.sands@free.fr>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:43 +0000 (16:47 +0200)]
USB: ti_usb_3410_5052: remove vendor/product module parameters
Remove the vendor and product module parameters which were added a long
time ago when we did not have the dynamic sysfs interface to add
new device ids (and which isn't limited to five new vid/pid pair).
A vid/pid pair can be added dynamically using sysfs, for example:
echo 0451 1234 >/sys/bus/usb-serial/drivers/ti_usb_3410_5052_1/new_id
for 1-port adapters, or
echo 0451 1234 >/sys/bus/usb-serial/drivers/ti_usb_3410_5052_2/new_id
for 2-port adapters.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:42 +0000 (16:47 +0200)]
USB: ti_usb_3410_5052: remove unused wait queue
The write wait queue is never added to since commit
f1175daa5 ("USB:
ti_usb_3410_5052: kill custom closing_wait"). Remove it completely.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:41 +0000 (16:47 +0200)]
USB: ti_usb_3410_5052: kill private fifo
Kill private write fifo and use the already allocated port write fifo
instead.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:40 +0000 (16:47 +0200)]
USB: safe_serial: remove vendor/product module parameters
Remove the vendor and product module parameters which were added a long
time ago when we did not have the dynamic sysfs interface to add
new device ids (and which isn't limited to a single new vid/pid pair).
A vid/pid pair can be added dynamically using sysfs, for example:
echo 04dd 1234 >/sys/bus/usb-serial/drivers/safe_serial/new_id
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:39 +0000 (16:47 +0200)]
USB: mos7840: remove broken chase implementation
Remove broken "chase" implementation which was supposed to be used to
drain the write buffers at break.
The chase implementation slept on a wait queue which was never woken up
(i.e. no hardware buffers were queried), and thus amounted to nothing
more than polling chars_in_buffer, something which has already been
taken care of by the tty layer.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:38 +0000 (16:47 +0200)]
USB: io_ti: move port initialisation to probe
Move port initialisation code from open to probe where it belongs.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:37 +0000 (16:47 +0200)]
USB: io_ti: kill private fifo
Kill private write fifo and use the already allocated port write fifo
instead.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:36 +0000 (16:47 +0200)]
USB: io_edgeport: remove unused defines
Remove unused timeout defines.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:35 +0000 (16:47 +0200)]
USB: ftdi_sio: remove unused defines
Remove some unused defines.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:34 +0000 (16:47 +0200)]
USB: ftdi_sio: remove vendor/product module parameters
Remove the vendor and product module parameters which were added a long
time ago when we did not have the dynamic sysfs interface to add
new device ids (and which isn't limited to a single new vid/pid pair).
A vid/pid pair can be added dynamically using sysfs, for example:
echo 0403 1234 >/sys/bus/usb-serial/drivers/ftdi_sio/new_id
Also fix up the in-code comment that got the sysfs path wrong.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:33 +0000 (16:47 +0200)]
USB: ftdi_sio: remove redundant raise of DTR/RTS at open
Do not raise DTR/RTS a second time in set_termios at open -- this has
already been taken care of by the tty layer.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:32 +0000 (16:47 +0200)]
USB: ftdi_sio: clean up device initialisation
Do not use zeroed termios data to determine when to unconditionally
configure the device at open.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:31 +0000 (16:47 +0200)]
USB: oti6858: do not call set_termios with uninitialised data
Make sure set_termios is not called with uninitialised data at open. The
old termios struct is currently not used, but pass NULL instead to avoid
future problems (e.g. stack data leak).
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:30 +0000 (16:47 +0200)]
USB: pl2303: remove debugging noise
Only log the tty_flags in process_read_urb on errors.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:29 +0000 (16:47 +0200)]
USB: pl2303: clean up set_termios
Clean up set_termios somewhat.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:28 +0000 (16:47 +0200)]
USB: pl2303: clean up baud-rate handling
Clean up baud-rate handling somewhat.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:27 +0000 (16:47 +0200)]
USB: pl2303: refactor baud-rate handling
Break out baud-rate handling from set_termios.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:26 +0000 (16:47 +0200)]
USB: console: remove unnecessary operations test
Remove unnecessary tests for open and write operations as these are set
to the generic implementations by usb-serial core if left unset by a
subdriver.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:25 +0000 (16:47 +0200)]
USB: console: use dev_dbg
Use dev_dbg for debugging.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:23 +0000 (16:47 +0200)]
USB: serial: set drain delay at port probe
The port drain delay is constant and should be set at port probe rather
than open.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:22 +0000 (16:47 +0200)]
USB: serial: clean up dtr_rts
Since commit
957dacae ("TTY: fix DTR not being dropped on hang up")
dtr_rts is no longer called for uninitialised ports (e.g. after
a disconnect), which removes the need to grab the disconnect mutex.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:21 +0000 (16:47 +0200)]
USB: serial: remove hupping check from tiocmiwait
Since commit
31ca020b ("TTY: wake up processes last at hangup") there no
longer any need to check the hupping flag in the generic tiocmiwait
implementation, so remove it.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 26 Jun 2013 14:47:20 +0000 (16:47 +0200)]
USB: serial: remove defensive test from set_termios
Remove defensive test from set_termios which is never called with a NULL
tty.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Wed, 26 Jun 2013 23:30:47 +0000 (16:30 -0700)]
USB: misc: remove CONFIG_USB_DEBUG from Makefile
Now that no usb misc driver is looking for CONFIG_USB_DEBUG, or DEBUG,
don't enable it in the Makefile, as that's pointless.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Wed, 26 Jun 2013 23:30:46 +0000 (16:30 -0700)]
USB: adutux: remove direct calls to printk()
Use the pr_* calls instead, which are much more descriptive.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Wed, 26 Jun 2013 23:30:45 +0000 (16:30 -0700)]
USB: adutux: remove custom debug macro and module parameter
Now that we don't use the dbg() macro, remove it, and the module
parameter. Also fix up the "dump_data" function to properly use the
dynamic debug core and the correct printk options, and don't call it
twice per function, as the data doesn't change from the beginning and
the end of the call.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Wed, 26 Jun 2013 23:30:44 +0000 (16:30 -0700)]
USB: adutux: remove custom debug macro
Don't use a custom debug macro for just one driver, instead rely on the
in-kernel dynamic debugging logic, which can handle this much better.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Wed, 26 Jun 2013 23:30:43 +0000 (16:30 -0700)]
USB: adutux: remove unneeded tracing macros
Remove the unneeded tracing macros in this driver. The kernel has a
built-in trace function that can be used if this is really still needed.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Wed, 26 Jun 2013 23:30:42 +0000 (16:30 -0700)]
USB: legotower: remove direct calls to printk()
Use the pr_* calls instead, which are much more descriptive.
Cc: Juergen Stuber <starblue@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Wed, 26 Jun 2013 23:30:41 +0000 (16:30 -0700)]
USB: legotower: remove custom debug macro and module parameter
Now that we don't use the dbg() macro, remove it, and the module
parameter. Also fix up the "dump_data" function to properly use the
dynamic debug core and the correct printk options, and don't call it
twice per function, as the data doesn't change from the beginning and
the end of the call.
Cc: Juergen Stuber <starblue@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Wed, 26 Jun 2013 23:30:40 +0000 (16:30 -0700)]
USB: legousbtower: remove custom debug macro
Don't use a custom debug macro for just one driver, instead rely on the
in-kernel dynamic debugging logic, which can handle this much better.
Cc: Juergen Stuber <starblue@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Wed, 26 Jun 2013 23:30:39 +0000 (16:30 -0700)]
USB: legotower: remove unneeded tracing macros
Remove the unneeded tracing macros in this driver. The kernel has a
built-in trace function that can be used if this is really still needed.
Cc: Juergen Stuber <starblue@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Wed, 26 Jun 2013 23:30:38 +0000 (16:30 -0700)]
USB: ldusb: remove custom dbg_info() macro
We want to get rid of CONFIG_USB_DEBUG, so remove the reliance of the
ldusb driver on it. Don't use the custom macro, or a special module
parameter, instead, rely on the in-kernel dynamic debugging
infrastructure, which is much easier to use, and consistant across the
whole kernel.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Fri, 28 Jun 2013 15:15:25 +0000 (17:15 +0200)]
usb: option: add TP-LINK MA260
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linus Torvalds [Tue, 23 Jul 2013 23:04:07 +0000 (16:04 -0700)]
Merge tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux
Pull device tree bug fixes and maintainership updates from Grant Likely:
"This branch contains a couple of minor bug fixes and documentation
additions, but the bulk of it are several changes to the MAINTAINERS
file regarding the subsystems I've been involved with"
* tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux:
of/irq: init struct resource to 0 in of_irq_to_resource()
of/irq: Avoid calling list_first_entry() for empty list
of: add vendor prefixes for hisilicon
of: add vendor prefix for Qualcomm Atheros, Inc.
MAINTAINERS: Fix incorrect status tag
MAINTAINERS: Refactor device tree maintainership
MAINTAINERS: Change device tree mailing list
MAINTAINERS: Remove Grant Likely
Borislav Petkov [Fri, 19 Jul 2013 10:28:25 +0000 (12:28 +0200)]
EDAC: Fix lockdep splat
Fix the following:
BUG: key
ffff88043bdd0330 not in .data!
------------[ cut here ]------------
WARNING: at kernel/lockdep.c:2987 lockdep_init_map+0x565/0x5a0()
DEBUG_LOCKS_WARN_ON(1)
Modules linked in: glue_helper sb_edac(+) edac_core snd acpi_cpufreq lrw gf128mul ablk_helper iTCO_wdt evdev i2c_i801 dcdbas button cryptd pcspkr iTCO_vendor_support usb_common lpc_ich mfd_core soundcore mperf processor microcode
CPU: 2 PID: 599 Comm: modprobe Not tainted 3.10.0 #1
Hardware name: Dell Inc. Precision T3600/0PTTT9, BIOS A08 01/24/2013
0000000000000009 ffff880439a1d920 ffffffff8160a9a9 ffff880439a1d958
ffffffff8103d9e0 ffff88043af4a510 ffffffff81a16e11 0000000000000000
ffff88043bdd0330 0000000000000000 ffff880439a1d9b8 ffffffff8103dacc
Call Trace:
dump_stack
warn_slowpath_common
warn_slowpath_fmt
lockdep_init_map
? trace_hardirqs_on_caller
? trace_hardirqs_on
debug_mutex_init
__mutex_init
bus_register
edac_create_sysfs_mci_device
edac_mc_add_mc
sbridge_probe
pci_device_probe
driver_probe_device
__driver_attach
? driver_probe_device
bus_for_each_dev
driver_attach
bus_add_driver
driver_register
__pci_register_driver
? 0xffffffffa0010fff
sbridge_init
? 0xffffffffa0010fff
do_one_initcall
load_module
? unset_module_init_ro_nx
SyS_init_module
tracesys
---[ end trace
d24a70b0d3ddf733 ]---
EDAC MC0: Giving out device to 'sbridge_edac.c' 'Sandy Bridge Socket#0': DEV 0000:3f:0e.0
EDAC sbridge: Driver loaded.
What happens is that bus_register needs a statically allocated lock_key
because the last is handed in to lockdep. However, struct mem_ctl_info
embeds struct bus_type (the whole struct, not a pointer to it) and the
whole thing gets dynamically allocated.
Fix this by using a statically allocated struct bus_type for the MC bus.
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: stable@kernel.org # v3.10
Signed-off-by: Tony Luck <tony.luck@intel.com>
Linus Torvalds [Tue, 23 Jul 2013 22:48:35 +0000 (15:48 -0700)]
Merge branch 'for-3.11-fixes' of git://git./linux/kernel/git/tj/cgroup
Pull cgroup changes from Tejun Heo:
"This contains two patches, both of which aren't fixes per-se but I
think it'd be better to fast-track them.
One removes bcache_subsys_id which was added without proper review
through the block tree. Fortunately, bcache cgroup code is
unconditionally disabled, so this was never exposed to userland. The
cgroup subsys_id is removed. Kent will remove the affected (disabled)
code through bcache branch.
The other simplifies task_group_path_from_hierarchy(). The function
doesn't currently have in-kernel users but there are external code and
development going on dependent on the function and making the function
available for 3.11 would make things go smoother"
* 'for-3.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup: replace task_cgroup_path_from_hierarchy() with task_cgroup_path()
cgroup: remove bcache_subsys_id which got added stealthily
Linus Torvalds [Tue, 23 Jul 2013 22:47:08 +0000 (15:47 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"This is just a regular fixes pull, mostly nouveau and i915, the i915
ones fix RC6 on Sandybridge after suspend/resume, which I think people
have be wanting for quite a while!
Now you shouldn't wish for more patches, as the new mutex/reservation
code found a number of problems with the qxl driver, and it currently
makes lockdep angry, I'm working on a set of fixes for it, but its a
bit large, I'll submit them separately later today or tomorrow once
I've banged on them a bit more, just warning you in advance :-)"
Yeah, I'm definitely over the whole "wish for more patches" thing.
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/crtc-helper: explicit DPMS on after modeset
drm/i915: fix up gt init sequence fallout
drm/i915: Serialize almost all register access
drm/i915: quirk no PCH_PWM_ENABLE for Dell XPS13 backlight
drm/i915: correctly restore fences with objects attached
drm/i915: Fix dereferencing invalid connectors in is_crtc_connector_off()
drm/i915: Sanitize shared dpll state
drm/i915: fix long-standing SNB regression in power consumption after resume v2
drm/i915: Preserve the DDI_A_4_LANES bit from the bios
drm/i915: fix pfit regression for non-autoscaled resolutions
drm/i915: fix up readout of the lvds dither bit on gen2/3
drm/nouveau: do not allow negative sizes for now
drm/nouveau: add falcon interrupt handler
drm/nouveau: use dedicated channel for async moves on GT/GF chipsets.
drm/nouveau: bump fence timeout to 15 seconds
drm/nouveau: do not unpin in nouveau_gem_object_del
drm/nv50/kms: fix pin refcnt leaks
drm/nouveau: fix some error-path leaks in fbcon handling code
drm/nouveau: fix locking issues in page flipping paths
projects / firefly-linux-kernel-4.4.55.git / log