firefly-linux-kernel-4.4.55.git
10 years agommc: card: Prevent partition scan for the eMMC boot areas
Ulf Hansson [Wed, 3 Sep 2014 09:02:23 +0000 (11:02 +0200)]
mmc: card: Prevent partition scan for the eMMC boot areas

It seems very unlikely that eMMC devices would hold a standard
partitiontable in one of it's boot areas. Therefore, let's prevent
them from being scanned.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: remove MMC_CAP2_NO_MULTI_READ flags
Kuninori Morimoto [Tue, 9 Sep 2014 06:46:49 +0000 (23:46 -0700)]
mmc: remove MMC_CAP2_NO_MULTI_READ flags

Now, mmc framework uses multi_io_quirk
for I/O HW bug workaround.
MMC_CAP2_NO_MULTI_READ flag is no longer needed

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agoARM: shmobile: remove MMC_CAP2_NO_MULTI_READ from lager
Kuninori Morimoto [Tue, 9 Sep 2014 06:46:32 +0000 (23:46 -0700)]
ARM: shmobile: remove MMC_CAP2_NO_MULTI_READ from lager

sh_mobile_sdhi cares multiblock read bug.
remove MMC_CAP2_NO_MULTI_READ flag from board code

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agoARM: shmobile: remove MMC_CAP2_NO_MULTI_READ from koelsch
Kuninori Morimoto [Tue, 9 Sep 2014 06:46:10 +0000 (23:46 -0700)]
ARM: shmobile: remove MMC_CAP2_NO_MULTI_READ from koelsch

sh_mobile_sdhi cares multiblock read bug.
remove MMC_CAP2_NO_MULTI_READ flag from board code

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: use .multi_io_quirk on sh_mobile
Kuninori Morimoto [Tue, 9 Sep 2014 06:45:46 +0000 (23:45 -0700)]
mmc: use .multi_io_quirk on sh_mobile

Now, sh_mobile_sdhi can use .multi_io_quirk callback
instead of MMC_CAP2_NO_MULTI_READ flags.
let's use it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: use .multi_io_quirk on tmio_mmc
Kuninori Morimoto [Tue, 9 Sep 2014 06:45:25 +0000 (23:45 -0700)]
mmc: use .multi_io_quirk on tmio_mmc

Now, tmio_mmc can use .multi_io_quirk callback
instead of MMC_CAP2_NO_MULTI_READ flags.
let's use it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: use .multi_io_quirk on omap_hsmmc
Kuninori Morimoto [Tue, 9 Sep 2014 06:44:51 +0000 (23:44 -0700)]
mmc: use .multi_io_quirk on omap_hsmmc

Now, omap_hsmmc can use .multi_io_quirk callback
instead of MMC_CAP2_NO_MULTI_READ flags.
let's use it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci-pci: disable preset register for Baytrail and Merrifield
Gao, Yunpeng [Thu, 4 Sep 2014 07:18:05 +0000 (15:18 +0800)]
mmc: sdhci-pci: disable preset register for Baytrail and Merrifield

Due to HW issue, SDHCI host controller on Intel
Baytrail/Merrifield platforms can not use preset
register. So, disable preset registers for them by quirks.

Signed-off-by: Yunpeng Gao <yunpeng.gao@intel.com>
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: Add .multi_io_quirk callback for multi I/O HW bug
Kuninori Morimoto [Wed, 3 Sep 2014 02:08:53 +0000 (19:08 -0700)]
mmc: Add .multi_io_quirk callback for multi I/O HW bug

Historically, we have been using MMC_CAP* to handle host HW issues and
currently the block layer uses MMC_CAP2_NO_MULTI_READ flag for a multi
I/O HW bug workaround.

There are a few tweaks needed to make MMC_CAP2_NO_MULTI_READ suite all
situations. Therefore let's add an optional host ops callback to enable
host drivers to return the number of blocks it allows per request.

In a future patch and when host drivers have converted to the new
callback, MMC_CAP2_NO_MULTI_READ shall be removed.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci: check 1.2v IO capability for SDHC host
Chuanxiao.Dong [Tue, 19 Aug 2014 03:02:41 +0000 (11:02 +0800)]
mmc: sdhci: check 1.2v IO capability for SDHC host

Right now enable 1.2v IO voltage for SDHC is by using vqmmc.
Thus for the host which doesn't have vqmmc, or its vqmmc does
not support 1.2v, directly use MMC_CAP2_HS200 may cause HS200
failure.

So needs to check if vqmmc is able to support 1.2v. If it does
not support, disable 1.2v IO for HS200.

Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: core: Fix sequence for I/O voltage in DDR mode for eMMC
Chuanxiao.Dong [Fri, 15 Aug 2014 03:28:07 +0000 (11:28 +0800)]
mmc: core: Fix sequence for I/O voltage in DDR mode for eMMC

Even (e)MMC card can support 3.3v to 1.2v vccq in DDR, but not all
host controller can support this, like some of the SDHCI host
which connect to an eMMC device. Some of these host controller
still needs to use 1.8v vccq for supporting DDR mode.

So the sequence will be:
if (host and device can both support 1.2v IO)
use 1.2v IO;
else if (host and device can both support 1.8v IO)
use 1.8v IO;
so if host and device can only support 3.3v IO, this is the last choice.

Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Yunpeng Gao <yunpeng.gao@intel.com>
Tested-by: Jean-Michel Hautbois <jhautbois@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: pxamci: prepare and unprepare the clocks
Robert Jarzmik [Tue, 2 Sep 2014 09:23:55 +0000 (11:23 +0200)]
mmc: pxamci: prepare and unprepare the clocks

Add the clock prepare and unprepare call to the driver set_ios calls
phase. This will remove a warning once the PXA architecture is migrated
to the clock infrastructure.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci-acpi: add probe_slot method for emmc/sd/sdio
Gao, Yunpeng [Mon, 1 Sep 2014 03:35:40 +0000 (11:35 +0800)]
mmc: sdhci-acpi: add probe_slot method for emmc/sd/sdio

Similar to sdhci-pci controller, also add probe_slot
and remove_slot method in the sdhci-acpi driver.

Signed-off-by: Yunpeng Gao <yunpeng.gao@intel.com>
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci-pci: enable runtime pm for Intel Merrifield platform
Gao, Yunpeng [Mon, 18 Aug 2014 07:05:52 +0000 (15:05 +0800)]
mmc: sdhci-pci: enable runtime pm for Intel Merrifield platform

Enable runtime pm support on Intel Merrifield platform.

Signed-off-by: Yunpeng Gao <yunpeng.gao@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci: handle busy-end interrupt during command
Chanho Min [Sat, 30 Aug 2014 03:40:40 +0000 (12:40 +0900)]
mmc: sdhci: handle busy-end interrupt during command

It is fully legal for a controller to start handling busy-end interrupt
before it has signaled that the command has completed. So make sure
we do things in the proper order, Or it results that command interrupt
is ignored so it can cause unexpected operations. This is founded at some
toshiba emmc with the bellow warning.

"mmc0: Got command interrupt 0x00000001 even though
no command operation was in progress."

This issue has been also reported by Youssef TRIKI:
It is not specific to Toshiba devices, and happens with eMMC devices
as well as SD card which support Auto-CMD12 rather than CMD23.

Also, similar patch is submitted by:
Gwendal Grignou <gwendal@chromium.org>

Changes since v1:
 Fixed conflict with the next of git.linaro.org/people/ulf.hansson/mmc.git
 and Tested if issue is fixed again.

Signed-off-by: Hankyung Yu <hankyung.yu@lge.com>
Signed-off-by: Chanho Min <chanho.min@lge.com>
Tested-by: Youssef TRIKI <youssef.triki@st.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agosdhci: Make sdhci_disable_irq_wakeups() static
Fabio Estevam [Sat, 30 Aug 2014 17:53:13 +0000 (14:53 -0300)]
sdhci: Make sdhci_disable_irq_wakeups() static

sdhci_disable_irq_wakeups() is exported, but it is not called outside sdhci.c.

Make it static and do not export it, so that the following sparse warning is
fixed:

drivers/mmc/host/sdhci.c:2548:6: warning: symbol 'sdhci_disable_irq_wakeups' was not declared. Should it be static?

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci: move timeout_clk dynamically calculation code into common code
Aisheng Dong [Wed, 27 Aug 2014 07:26:32 +0000 (15:26 +0800)]
mmc: sdhci: move timeout_clk dynamically calculation code into common code

The timeout_clk calculation code for SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK case
is common and could be moved into common sdhci_do_set_ios, then platform code
which is not using sdhci_set_clock does not need to write the same code again.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci: calculate timeout_clk conditionally in sdhci_add_host
Aisheng Dong [Wed, 27 Aug 2014 07:26:31 +0000 (15:26 +0800)]
mmc: sdhci: calculate timeout_clk conditionally in sdhci_add_host

The timeout_clk calculation code in sdhci_add_host is meaningless for
SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK.
So only execute them with no SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK set.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci-esdhc-imx: set the correct max timeout value for uSDHC
Aisheng Dong [Wed, 27 Aug 2014 07:26:30 +0000 (15:26 +0800)]
mmc: sdhci-esdhc-imx: set the correct max timeout value for uSDHC

The default sdhci driver write 0xE into timeout counter register to
set the maximum timeout. The value is not correct for uSDHC since the
max counter value for uSDHC is 0xF.
Instead of using common timeout code in sdhci, we implement esdhc_set_timeout
to handle the difference between eSDHC and uSDHC.

Currently we simply set the max timeout value as before.
But in the future, we probably may implement IMX specific timeout
setting algorithm and use suitable timeout for different CMDs.

Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci: add platform set_timeout hook
Aisheng Dong [Wed, 27 Aug 2014 07:26:29 +0000 (15:26 +0800)]
mmc: sdhci: add platform set_timeout hook

Currently the common code assume 0xE is the maximum timeout counter
value and use it to write into the timeout counter register.
However, it's fairly possible that some other SoCs may have different
max timeout register value. That means 0xE may be incorrect and
becomes meaningless.

It's also possible that other platforms has different timeout
calculation algorithm. To be flexible, this patch provides a .set_timeout
hook for those platforms to set the timeout on their way if they need.

Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci-esdhc-imx: fix incorrect max timeout cout for uSDHC
Aisheng Dong [Wed, 27 Aug 2014 07:26:28 +0000 (15:26 +0800)]
mmc: sdhci-esdhc-imx: fix incorrect max timeout cout for uSDHC

The default sdhci code use the 1 << 27 as the max timeout counter to
to calculate the max_busy_timeout, however it's not correct for uSDHC
since its the max counter is 1 << 28.
Implement esdhc_get_max_timeout_cout to handle it correctly.

Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci: add platform get_max_timeout_count hook
Aisheng Dong [Wed, 27 Aug 2014 07:26:27 +0000 (15:26 +0800)]
mmc: sdhci: add platform get_max_timeout_count hook

Currently the max timeout count is hardcode to 1 << 27 for calcuate
the max_busy_timeout, however, for some platforms the max timeout
count may not be 1 << 27, e.g. i.MX uSDHC is 1 << 28.
Thus 1 << 27 is not correct for such platform.

It is also possible that other platforms may have different values.
To be flexible, we add a get_max_timeout_count hook to get the correct
maximum timeout value for these platforms.

Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: tmio-mmc: Add support for SDHI on new R-Car Gen2 SoCs
Geert Uytterhoeven [Thu, 28 Aug 2014 08:07:19 +0000 (10:07 +0200)]
mmc: tmio-mmc: Add support for SDHI on new R-Car Gen2 SoCs

- r8a7792 (R-Car V2H)
  - r8a7793 (R-Car M2-N)
  - r8a7794 (R-Car E2)

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: dw_mmc: Pass back errors from mmc_of_parse()
Doug Anderson [Mon, 25 Aug 2014 18:19:04 +0000 (11:19 -0700)]
mmc: dw_mmc: Pass back errors from mmc_of_parse()

It's possible that mmc_of_parse() could return errors (possibly in
some future version it might return -EPROBE_DEFER even).  Let's pass
those errors back.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci-sirf: fix 8bit width enable by overwriting set_bus_width
Minda Chen [Tue, 26 Aug 2014 02:50:42 +0000 (10:50 +0800)]
mmc: sdhci-sirf: fix 8bit width enable by overwriting set_bus_width

the implementation of CSR SDHCI controller is a modified version of
the one described in the 1.0 specification, and not a normal 3.0
controller.
and 8bit-width enable bit of CSR MMC hosts is 3, while stardard hosts
use bit 5.
this patch fixes the functionality of 8bit transfer in mmc controllers
and improve performance for mmc0 a lot.

Signed-off-by: Minda Chen <Minda.Chen@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Reviewed-by: Romain Izard <romain.izard.pro@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: dw_mmc: Support voltage changes
Doug Anderson [Fri, 22 Aug 2014 13:47:51 +0000 (19:17 +0530)]
mmc: dw_mmc: Support voltage changes

For UHS cards we need the ability to switch voltages from 3.3V to
1.8V.  Add support to the dw_mmc driver to handle this.  Note that
dw_mmc needs a little bit of extra code since the interface needs a
special bit programmed to the CMD register while CMD11 is progressing.
This means adding a few extra states to the state machine to track.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: dw_mmc: use mmc_regulator_get_supply to handle regulators
Yuvaraj CD [Fri, 22 Aug 2014 13:47:50 +0000 (19:17 +0530)]
mmc: dw_mmc: use mmc_regulator_get_supply to handle regulators

This patch makes use of mmc_regulator_get_supply() to handle
the vmmc and vqmmc regulators.Also it moves the code handling
the these regulators to dw_mci_set_ios().It turned on the vmmc
and vqmmc during MMC_POWER_UP and MMC_POWER_ON,and turned off
during MMC_POWER_OFF.

Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: core: resolve divded by zero panic
Chuanxiao Dong [Thu, 14 Aug 2014 10:29:24 +0000 (18:29 +0800)]
mmc: core: resolve divded by zero panic

With one special SD card, below divide by zero error observed:
...
[    2.144300] divide error: 0000 [#1] PREEMPT SMP
[    2.148860] Modules linked in:
[    2.151898]
[    2.152685] Set up 4031 stolen pages starting at 0x0001f000, GTT offset 0K
[    2.157330] Set up 0 CI stolen pages starting at 0x00000000, GTT offset 131072K
[    2.167581] Pid: 5, comm: kworker/u:0 Not tainted 3.0.8-138216-g974a2ab #1
[    2.169506] [drm] PSB GTT mem manager ready, tt_start 4031, tt_size 28737 pages
[    2.169906] [drm] SGX core id = 0x00000000
[    2.169920] [drm] SGX core rev major = 0x00, minor = 0x00
[    2.169934] [drm] SGX core rev maintenance = 0x00, designer = 0x00
[    2.197370]  Intel Corporation Medfield/iCDKB
[    2.201716] EIP: 0060:[<c1697ca6>] EFLAGS: 00010246 CPU: 1
[    2.207198] EIP is at mmc_init_erase+0x76/0x150
[    2.211704] EAX: 00002000 EBX: dcd1b400 ECX: 00002000 EDX: 00000000
[    2.217957] ESI: 00000000 EDI: dcd5c800 EBP: dd867e84 ESP: dd867e7c
[    2.224214]  DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[    2.229605] Process kworker/u:0 (pid: 5, ti=dd866000 task=dd868000 task.ti=dd866000)
[    2.237325] Stack:
[    2.239322]  dcd1b400 00000000 dd867eb0 c16a06da c1ab7c44 dd995aa8 00000003 00000000
[    2.247054]  00000000 00000000 dcd5c800 00000000 dcd1b400 dd867ef8 c16a1012 c1698b00
[    2.254785]  00000029 00000001 c194eb80 dcd5c9ec dd867e00 c1239b00 00000000 00000000
[    2.262519] Call Trace:
[    2.264975]  [<c16a06da>] mmc_sd_setup_card+0x1da/0x4f0
[    2.270183]  [<c16a1012>] mmc_sd_init_card+0x192/0xc40
[    2.275304]  [<c1698b00>] ? __mmc_claim_host+0x160/0x160
[    2.280610]  [<c1239b00>] ? __schedule_bug+0x50/0x80
[    2.285556]  [<c16a1b89>] mmc_attach_sd+0xc9/0x230
[    2.290333]  [<c169b6ef>] mmc_rescan+0x25f/0x2c0
[    2.294943]  [<c1274223>] process_one_work+0x103/0x400
[    2.300065]  [<c12670fd>] ? mod_timer+0x1ad/0x3c0
[    2.304756]  [<c169b490>] ? mmc_suspend_host+0x1a0/0x1a0
[    2.310056]  [<c127502d>] worker_thread+0x12d/0x4a0
[    2.314921]  [<c18fcfbd>] ? preempt_schedule+0x2d/0x50
[    2.320047]  [<c1274f00[    2.323976] ---[ end trace 5398ec2720494438 ]---
...

So, seems this bad SD card does not set valid value in related SSR / CSD register fields.
And then the driver will set card->erase_size to 0.
Then it triggered this divided by zero error when calculate card->pref_erase.

Submit this patch to fix the issue.

Signed-off-by: Yunpeng Gao <yunpeng.gao@intel.com>
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sunxi: Declare ERASE capability
Chen-Yu Tsai [Wed, 20 Aug 2014 13:39:20 +0000 (21:39 +0800)]
mmc: sunxi: Declare ERASE capability

Declare ERASE capability so we can use filesystems with the discard
option and the fstrim tool.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci: Add PCI IDs for Intel Braswell
Alan Cox [Wed, 20 Aug 2014 10:27:44 +0000 (13:27 +0300)]
mmc: sdhci: Add PCI IDs for Intel Braswell

The hardware is the same as used in Baytrail. Add these new PCI IDs to the
driver's list of supported IDs.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: dw_mmc: move rockchip related code to a separate file
addy ke [Tue, 19 Aug 2014 04:36:14 +0000 (12:36 +0800)]
mmc: dw_mmc: move rockchip related code to a separate file

To support HS200 and UHS-1, we need add a big hunk of code,
as shown in the following patches. So a separate file for
rockchip SOCs is suitable.

Signed-off-by: Addy Ke <addy.ke@rock-chips.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Tested-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: tmio: add actual clock support as option
Shinobu Uehara [Mon, 25 Aug 2014 03:03:00 +0000 (20:03 -0700)]
mmc: tmio: add actual clock support as option

Some controller is supporting actual clock on SD_CLK_CTRL :: DIV[7:0].
Renesas SH-Mobile SDHI doesn't support,
but, Renesas R-Car SDHI supports it.
This patch adds new TMIO_MMC_CLK_ACTUAL flag for it.

[Kuninori Morimoto: tidyuped for upstreaming]

Tested-by: Nguyen Xuan Nui <nx-nui@jinso.co.jp>
Tested-by: Hiep Cao Minh <cm-hiep@jinso.co.jp>
Signed-off-by: Shinobu Uehara <shinobu.uehara.xc@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: tmio: remove SCLKEN bit setting from tmio_mmc_set_clock()
Kuninori Morimoto [Mon, 25 Aug 2014 03:02:16 +0000 (20:02 -0700)]
mmc: tmio: remove SCLKEN bit setting from tmio_mmc_set_clock()

TMIO clock is set via tmio_mmc_set_clock() -> tmio_mmc_clk_start(),
and SCLKEN bit will be set on tmio_mmc_clk_start().
It is not needed on tmio_mmc_set_clock() function.
The required clock setting will not be able to set
in some clocks without this patch.

Tested-by: Nguyen Xuan Nui <nx-nui@jinso.co.jp>
Tested-by: Hiep Cao Minh <cm-hiep@jinso.co.jp>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: tmio: remove Renesas specific #ifdef
Kuninori Morimoto [Mon, 25 Aug 2014 03:01:54 +0000 (20:01 -0700)]
mmc: tmio: remove Renesas specific #ifdef

This patch adds new TMIO_MMC_HAVE_CTL_DMA_REG flag,
and remove Renesas specific #ifdef from tmio driver

Tested-by: Nguyen Xuan Nui <nx-nui@jinso.co.jp>
Tested-by: Hiep Cao Minh <cm-hiep@jinso.co.jp>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: tmio: check ILL_FUNC instead of CBSY
Shinobu Uehara [Mon, 25 Aug 2014 03:01:32 +0000 (20:01 -0700)]
mmc: tmio: check ILL_FUNC instead of CBSY

Some controllers need to check SD bus status when writing data.
Then, it checks ILL_FUNC bit on SD_INFO2 register,
and this method is controlled via TMIO_MMC_HAS_IDLE_WAIT flags.
Same method is required on tmio_mmc_data_irq() which will
be called after writing data.

Current driver is checking CBSY bit for this purpose,
but, some controllers doesn't have CBSY bit.
This patch checks ILL_FUNC bit instead of CBSY bit
if it has TMIO_MMC_HAS_IDLE_WAIT flags

[Kuninori Morimoto: tidyuped for upstreaming]

Tested-by: Nguyen Xuan Nui <nx-nui@jinso.co.jp>
Tested-by: Hiep Cao Minh <cm-hiep@jinso.co.jp>
Signed-off-by: Shinobu Uehara <shinobu.uehara.xc@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: tmio: add TMIO_MMC_SDIO_STATUS_QUIRK
Shinobu Uehara [Mon, 25 Aug 2014 03:00:52 +0000 (20:00 -0700)]
mmc: tmio: add TMIO_MMC_SDIO_STATUS_QUIRK

Renesas R-Car SDHI should set reserved bits
on CTL_SDIO_STATUS register when writing.
This patch adds new TMIO_MMC_SDIO_STATUS_QUIRK flags
for this purpose

[Kuninori Morimoto: tidyuped for upstreaming
                    enabled this flags for all SH-Mobile/R-Car]

Tested-by: Nguyen Xuan Nui <nx-nui@jinso.co.jp>
Tested-by: Hiep Cao Minh <cm-hiep@jinso.co.jp>
Signed-off-by: Shinobu Uehara <shinobu.uehara.xc@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: tmio: control multiple block transfer mode
Shinobu Uehara [Mon, 25 Aug 2014 03:00:25 +0000 (20:00 -0700)]
mmc: tmio: control multiple block transfer mode

Renesas SDHI has "Multiple Block Transfer Mode" settings
on SD_CMD register which controls CMD12 automatically.

This patch cares it, because
CMD12 is not needed when CMD53 (= SD_IO_RW_EXTENDED)

[Kuninori Morimoto: tidyuped for upstreaming
                    enabled this flags for all SH-Mobile/R-Car]

Tested-by: Nguyen Xuan Nui <nx-nui@jinso.co.jp>
Tested-by: Hiep Cao Minh <cm-hiep@jinso.co.jp>
Signed-off-by: Shinobu Uehara <shinobu.uehara.xc@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: tmio: clear error IRQ status
Shinobu Uehara [Mon, 25 Aug 2014 02:59:22 +0000 (19:59 -0700)]
mmc: tmio: clear error IRQ status

Next card access will be always
error if it didn't clear error status

Tested-by: Nguyen Xuan Nui <nx-nui@jinso.co.jp>
Tested-by: Hiep Cao Minh <cm-hiep@jinso.co.jp>
Signed-off-by: Shinobu Uehara <shinobu.uehara.xc@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: tmio: care about DMA tx/rx addr offset
Kuninori Morimoto [Mon, 25 Aug 2014 02:58:48 +0000 (19:58 -0700)]
mmc: tmio: care about DMA tx/rx addr offset

Basically, SD_BUF0 Tx/Rx addresses are same
in normal TMIO controller,
but, it is different on Renesas R-Car SDHI controller
if it uses DMAC
(Rx address needs to add 0x2000 to Tx address)

This patch adds new .dma_rx_offset and cares it

Tested-by: Nguyen Xuan Nui <nx-nui@jinso.co.jp>
Tested-by: Hiep Cao Minh <cm-hiep@jinso.co.jp>
Acked-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: tmio: Remove library functions for system PM
Ulf Hansson [Mon, 25 Aug 2014 11:22:51 +0000 (13:22 +0200)]
mmc: tmio: Remove library functions for system PM

These library functions aren't used and nor needed, let's remove them.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
10 years agommc: tmio_mmc: Fixup system PM suspend lock-up
Ulf Hansson [Mon, 25 Aug 2014 10:28:20 +0000 (12:28 +0200)]
mmc: tmio_mmc: Fixup system PM suspend lock-up

At system PM suspend, the tmio core accessed the internal registers of
the controller without first moving the device into active state. This
caused a lock-up in system PM suspend phase.

The reason for the register access were masking of IRQs. Since that is
managed via the runtime PM suspend path, let's just re-use that path
for system PM suspend.

In other words force the device into runtime PM suspend state at system
PM suspend and restore it to active state at system PM resume.

Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
10 years agommc: sdhi: Fixup system PM suspend lock-up
Ulf Hansson [Mon, 25 Aug 2014 10:18:26 +0000 (12:18 +0200)]
mmc: sdhi: Fixup system PM suspend lock-up

At system PM suspend, the tmio core accessed the internal registers of
the controller without first moving the device into active state. This
caused a lock-up in system PM suspend phase.

The reason for the register access were masking of IRQs. Since that is
managed via the runtime PM suspend path, let's just re-use that path
for system PM suspend.

In other words force the device into runtime PM suspend state at system
PM suspend and restore it to active state at system PM resume.

Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
10 years agommc: tmio_mmc: Enable runtime PM support
Ulf Hansson [Mon, 25 Aug 2014 10:12:02 +0000 (12:12 +0200)]
mmc: tmio_mmc: Enable runtime PM support

To take advantage of the clock gating support, use the runtime PM
callbacks provided by the tmio core.

Additionally, we make use of the SET_PM_RUNTIME_PM_OPS, which is a
preparation needed to simplify system PM.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
10 years agommc: sdhi: Make runtime PM callbacks available for CONFIG_PM
Ulf Hansson [Mon, 25 Aug 2014 10:06:55 +0000 (12:06 +0200)]
mmc: sdhi: Make runtime PM callbacks available for CONFIG_PM

To be able to simplify system PM, let's re-use the runtime PM callbacks
by converting to the SET_PM_RUNTIME_PM_OPS macro.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
10 years agommc: tmio: Make runtime PM callbacks available for CONFIG_PM
Ulf Hansson [Mon, 25 Aug 2014 10:03:20 +0000 (12:03 +0200)]
mmc: tmio: Make runtime PM callbacks available for CONFIG_PM

To give the option for tmio hosts to use the runtime PM callbacks for
CONFIG_PM_SLEEP as well as CONFIG_PM_RUNTIME, move them to CONFIG_PM.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
10 years agommc: tmio: Mask all IRQs when inactive
Ulf Hansson [Mon, 25 Aug 2014 09:55:57 +0000 (11:55 +0200)]
mmc: tmio: Mask all IRQs when inactive

To make sure we don't receive any spurious IRQs while we are inactive,
mask the IRQs from within the ->runtime_suspend() callback.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
10 years agommc: tmio: Handle clock gating from runtime PM functions
Ulf Hansson [Tue, 29 Oct 2013 23:16:17 +0000 (00:16 +0100)]
mmc: tmio: Handle clock gating from runtime PM functions

Add clock gating control as a part of the tmio library functions for
runtime PM.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
10 years agommc: tmio: Restructure ->set_ios() and adapt ->probe() to it
Ulf Hansson [Thu, 24 Oct 2013 15:53:15 +0000 (17:53 +0200)]
mmc: tmio: Restructure ->set_ios() and adapt ->probe() to it

An internal power state machine were beeing used to keep ->probe() and
->set_ios() in sync. Especially for handling specific scenarios while
using CONFIG_MMC_CLKGATE. Moreover dependency to CONFIG_MMC_CLKGATE
existed to handle runtime PM properly, which we moves away from here.

By removing the state machine and instead make ->set_ios() rely on the
information provided through the function's in-parameters, the code
becomes significantly simplier.

Additonally as a part of this rework we prepares for making the runtime
PM callbacks responsible of clock gating.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
10 years agommc: tmio: Extract bus_width modifications to a separate function
Ulf Hansson [Thu, 24 Oct 2013 15:42:53 +0000 (17:42 +0200)]
mmc: tmio: Extract bus_width modifications to a separate function

Move code for bus_width modification, out of the ->set_ios() callback
and into a separate function, to simplify code.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
10 years agommc: tmio: Keep host active while serving requests
Ulf Hansson [Thu, 24 Oct 2013 14:42:33 +0000 (16:42 +0200)]
mmc: tmio: Keep host active while serving requests

Use runtime PM to keep the host active during I/O operations and other
requests which requires the tmio hardware to be powered.

Additionally make use of the runtime PM autosuspend feature with a
default timeout of 50 ms.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
10 years agommc: tmio: Keep host active while SDIO IRQ is enabled
Ulf Hansson [Thu, 24 Oct 2013 13:58:45 +0000 (15:58 +0200)]
mmc: tmio: Keep host active while SDIO IRQ is enabled

The host must be kept active to be able to serve SDIO IRQs, thus let's
prevent it from going inactive while SDIO IRQ is enabled.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
10 years agommc: atmel-mci: add 0x600 IP version
Nicolas Ferre [Thu, 12 Jun 2014 07:47:45 +0000 (09:47 +0200)]
mmc: atmel-mci: add 0x600 IP version

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: core: Use regulator_get_voltage() if OCR mask is empty.
Javier Martinez Canillas [Thu, 14 Aug 2014 12:39:00 +0000 (14:39 +0200)]
mmc: core: Use regulator_get_voltage() if OCR mask is empty.

The operation conditions register (OCR) stores the voltage
profile of the card, however the list of possible voltages
is restricted by the voltage range supported by the supply
used as VCC/VDD. So in mmc_vddrange_to_ocrmask() a OCR mask
is obtained to filter the not supported voltages, from the
value read in the host controller OCR register.

For fixed regulators, regulator_list_voltage() returns the
fixed output for the first selector but this doesn't happen
for switch (FET) regulators that obtain their voltage from
their parent supply. A call to regulator_get_voltage() is
needed in this case so the regulator core can return the
FET's parent supply voltage output.

This change is consistent with the fact that for other
fixed regulators (that are not FETs) the OCR mask is
returned even when mmc_regulator_set_ocr() checks if the
regulator is fixed before calling regulator_set_voltage().

Without this patch, the following warning is reported when
a FET is used as a vmmc-supply:

dwmmc_exynos 12220000.mmc: Failed getting OCR mask: -22

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: implement Driver Stage Register handling
Sascha Hauer [Tue, 19 Aug 2014 08:45:51 +0000 (10:45 +0200)]
mmc: implement Driver Stage Register handling

Some eMMC and SD cards implement a DSR register that allows to tune
raise/fall times and drive strength of the CMD and DATA outputs.
The values to use depend on the card in use and the host.
It might be needed to reduce the drive strength to prevent voltage peaks
above the host's specification.

Implement a 'dsr' devicetree property that allows to specify the value
to set the DSR to. For non-dt setups the new members of mmc_host can be
set by board code.

This patch was initially authored by Sascha Hauer. It contains
improvements authored by Markus Niebel and Uwe Kleine-König.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Markus Niebel <Markus.Niebel@tq-group.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci-pxav3: set_uhs_signaling is initialized twice differently
Peter Griffin [Fri, 15 Aug 2014 13:02:15 +0000 (14:02 +0100)]
mmc: sdhci-pxav3: set_uhs_signaling is initialized twice differently

.set_uhs_signaling field is currently initialised twice once to the
arch specific callback pxav3_set_uhs_signaling, and also to the generic
sdhci_set_uhs_signaling callback.

This means that uhs is currently broken for this platform currently, as pxav3
has some special constriants which means it can't use the generic callback.

This happened in
commit 96d7b78cfc2f ("mmc: sdhci: convert sdhci_set_uhs_signaling() into a library function")
commit a702c8abb2a9 ("mmc: host: split up sdhci-pxa, create sdhci-pxav3.c")'

Fix this and hopefully prevent it happening in the future by ensuring named
initialisers always follow the declaration order in the structure definition.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Cc: <stable@vger.kernel.org> # v3.16+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci-acpi.c: Use SET_RUNTIME_PM_OPS macro to set runtime pm callbacks
Peter Griffin [Tue, 12 Aug 2014 16:14:29 +0000 (17:14 +0100)]
mmc: sdhci-acpi.c: Use SET_RUNTIME_PM_OPS macro to set runtime pm callbacks

This allows us to get rid of the #else condition, as the macro compiles
away to nothing if not enabled.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci-pci: Use SET_RUNTIME_PM_OPS macro to set runtime pm callbacks
Peter Griffin [Tue, 12 Aug 2014 16:14:28 +0000 (17:14 +0100)]
mmc: sdhci-pci: Use SET_RUNTIME_PM_OPS macro to set runtime pm callbacks

This allows us to get rid of the #else condition, as the macro compiles
away to nothing if not enabled.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: dw_mmc-pltfm: Remove superflous #else condition on CONFIG_PM_SLEEP
Peter Griffin [Tue, 12 Aug 2014 16:14:27 +0000 (17:14 +0100)]
mmc: dw_mmc-pltfm: Remove superflous #else condition on CONFIG_PM_SLEEP

As the code is using SIMPLE_DEV_PM_OPS helper, this compiles away to
nothing if CONFIG_PM_SLEEP is disabled. Thus we don't need to #define
the suspend/resume callbacks to NULL.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: dw_mmc-pci: Remove superflous #else condition on CONFIG_PM_SLEEP
Peter Griffin [Tue, 12 Aug 2014 16:14:26 +0000 (17:14 +0100)]
mmc: dw_mmc-pci: Remove superflous #else condition on CONFIG_PM_SLEEP

As the code is using SIMPLE_DEV_PM_OPS helper, this compiles away to
nothing if CONFIG_PM_SLEEP is disabled. Thus we don't need to #define
the suspend/resume callbacks to NULL.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: remove .owner field for drivers using module_platform_driver
Peter Griffin [Tue, 12 Aug 2014 16:14:25 +0000 (17:14 +0100)]
mmc: remove .owner field for drivers using module_platform_driver

This patch removes the superflous .owner field for drivers which
use the module_platform_driver API, as this is overriden in
platform_driver_register anyway.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: core: sdio: Fix unconditional wake_up_process() on sdio thread
Fu Zhonghui [Mon, 18 Aug 2014 02:48:14 +0000 (10:48 +0800)]
mmc: core: sdio: Fix unconditional wake_up_process() on sdio thread

781e989cf59 ("mmc: sdhci: convert to new SDIO IRQ handling") and
bf3b5ec66bd ("mmc: sdio_irq: rework sdio irq handling") disabled
the use of our own custom threaded IRQ handler, but left in an
unconditional wake_up_process() on that handler at resume-time.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=80151
In addition, the check for MMC_CAP_SDIO_IRQ capability is added
before enable sdio IRQ.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <chris@printf.net>
Signed-off-by: Fu Zhonghui <zhonghui.fu@linux.intel.com>
Cc: <stable@vger.kernel.org> # v3.16+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: dw_mmc: Add support for MIPS
Andrew Bresticker [Thu, 14 Aug 2014 16:45:28 +0000 (09:45 -0700)]
mmc: dw_mmc: Add support for MIPS

There are upcoming MIPS SoCs with dw_mmc hosts.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: dw_mmc: Add dependency on DMA
Andrew Bresticker [Thu, 14 Aug 2014 16:45:27 +0000 (09:45 -0700)]
mmc: dw_mmc: Add dependency on DMA

The dw_mmc drivers rely on the DMA API, so update the Kconfig entry
to depend on HAS_DMA.  Since the drivers should build on any platform
with DMA, allow the driver to compile tested on non-ARC/ARM platforms.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agosdhci : recompute timeout_clk when needed
Matthieu CASTET [Thu, 14 Aug 2014 14:03:18 +0000 (16:03 +0200)]
sdhci : recompute timeout_clk when needed

when SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK is set, timeout_clk is sdclk.
We need to update it when we change sdclk in sdhci_set_clock.
This allow to have a more precisse timeout and max_busy_timeout. This
can help for command that need a big busy wait (erase, ...).

Signed-off-by: Matthieu CASTET <matthieu.castet@parrot.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agosdhci : handle busy timeout irq
Matthieu CASTET [Thu, 14 Aug 2014 14:03:17 +0000 (16:03 +0200)]
sdhci : handle busy timeout irq

When we wait for busy after sending a command, if there is
a timeout, we got SDHCI_INT_DATA_TIMEOUT flags.
Before this commit we got the message :
"Got data interrupt 0x00100000 even though no data  operation was in progress."
and we need to wait 10s that sdhci_timeout_timer expires.

Signed-off-by: Matthieu CASTET <matthieu.castet@parrot.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: rtsx_usb_sdmmc: fix incorrect last byte in R2 response
Roger Tseng [Fri, 15 Aug 2014 06:06:01 +0000 (14:06 +0800)]
mmc: rtsx_usb_sdmmc: fix incorrect last byte in R2 response

Current code erroneously fill the last byte of R2 response with an undefined
value. In addition, the controller actually 'offloads' the last byte
(CRC7, end bit) while receiving R2 response and thus it's impossible to get the
actual value. This could cause mmc stack to obtain inconsistent CID from the
same card after resume and misidentify it as a different card.

Fix by assigning dummy CRC and end bit: {7'b0, 1} = 0x1 to the last byte of R2.

Cc: <stable@vger.kernel.org> # v3.16+
Fixes: c7f6558d84af ("mmc: Add realtek USB sdmmc host driver")
Signed-off-by: Roger Tseng <rogerable@realtek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: rtsx_pci_sdmmc: fix incorrect last byte in R2 response
Roger Tseng [Fri, 15 Aug 2014 06:06:00 +0000 (14:06 +0800)]
mmc: rtsx_pci_sdmmc: fix incorrect last byte in R2 response

Current code erroneously fill the last byte of R2 response with an undefined
value. In addition, the controller actually 'offloads' the last byte
(CRC7, end bit) while receiving R2 response and thus it's impossible to get the
actual value. This could cause mmc stack to obtain inconsistent CID from the
same card after resume and misidentify it as a different card.

Fix by assigning dummy CRC and end bit: {7'b0, 1} = 0x1 to the last byte of R2.

Cc: <stable@vger.kernel.org> # v3.8+
Fixes: ff984e57d36e ("mmc: Add realtek pcie sdmmc host driver")
Signed-off-by: Roger Tseng <rogerable@realtek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: au1xmmc: fix error return code in au1xmmc_probe()
Wei Yongjun [Thu, 14 Aug 2014 01:00:19 +0000 (09:00 +0800)]
mmc: au1xmmc: fix error return code in au1xmmc_probe()

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: dw_mmc: Make sure we don't get stuck when we get an error
Doug Anderson [Wed, 13 Aug 2014 15:13:43 +0000 (08:13 -0700)]
mmc: dw_mmc: Make sure we don't get stuck when we get an error

If we happened to get a data error at just the wrong time the dw_mmc
driver could get into a state where it would never complete its
request.  That would leave the caller just hanging there.

We fix this two ways and both of the two fixes on their own appear to
fix the problems we've seen:

1. Fix a race in the tasklet where the interrupt setting the data
   error happens _just after_ we check for it, then we get a
   EVENT_XFER_COMPLETE.  We fix this by repeating a bit of code.
2. Fix it so that if we detect that we've got an error in the "data
   busy" state and we're not going to do anything else we end the
   request and unblock anyone waiting.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@gmail.com>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: Correct the value of MMC_NUM_PHY_PARTITION
Yi Sun [Wed, 13 Aug 2014 05:34:01 +0000 (13:34 +0800)]
mmc: Correct the value of MMC_NUM_PHY_PARTITION

eMMC card can support up to 7 physical partitions, including 2 boot,
1 RPMB and 4 GPs. Change MMC_NUM_PHY_PARTITION from 6 to 7, which is
the correct value.

Signed-off-by: Yi Sun <yi.y.sun@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci: fix the wrong type of curr
Chuanxiao.Dong [Fri, 1 Aug 2014 06:00:13 +0000 (14:00 +0800)]
mmc: sdhci: fix the wrong type of curr

curr should use signed type since it will contain the returned
value which is possible to be a negative value. Using u32 will
make the returned value to be true even there is a negative result.
Change to use int instead of u32

Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: jz4740: prepare next dma transfer in parallel with current transfer
Apelete Seketeli [Mon, 21 Jul 2014 04:37:45 +0000 (06:37 +0200)]
mmc: jz4740: prepare next dma transfer in parallel with current transfer

Make use of the MMC asynchronous request capability to prepare the
next DMA transfer request in parallel with the current transfer.
This is done by adding pre-request and post-request callbacks that are
used by the MMC framework during an active data transfer.

It should help reduce the impact of DMA preparation overhead on the SD
card performance.

Signed-off-by: Apelete Seketeli <apelete@seketeli.net>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: jz4740: add dma infrastructure for data transfers
Apelete Seketeli [Mon, 21 Jul 2014 04:37:44 +0000 (06:37 +0200)]
mmc: jz4740: add dma infrastructure for data transfers

Until now the MMC driver for JZ4740 SoC was relying on PIO mode only
for data transfers.
This patch allows the use of DMA for data trasnfers in addition to PIO
mode by relying on DMA Engine.

DMA tranfers performance might be further improved by taking advantage
of the asynchronous request capability of the MMC framework.

Signed-off-by: Apelete Seketeli <apelete@seketeli.net>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: dw_mmc: add support for RK3288
Addy Ke [Thu, 31 Jul 2014 06:01:38 +0000 (14:01 +0800)]
mmc: dw_mmc: add support for RK3288

This patch focuses on clock setting for RK3288 mmc controller.

In RK3288 mmc controller, CLKDIV register can only be set 0 or 1,
and if DDR 8bit mode, CLKDIV register must be set 1.

Signed-off-by: Addy Ke <addy.ke@rock-chips.com>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: include linux/types.h for bool definition in atmel-mci.h
Hans-Christian Egtvedt [Thu, 7 Aug 2014 13:14:06 +0000 (15:14 +0200)]
mmc: include linux/types.h for bool definition in atmel-mci.h

This patch adds an include of linux/types.h to make sure bool is defined
before utilized in this header file.

Signed-off-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci-pltfm: Do not use parent as the host's device
Pawel Moll [Tue, 12 Aug 2014 10:37:52 +0000 (11:37 +0100)]
mmc: sdhci-pltfm: Do not use parent as the host's device

The code selecting a device for the sdhci host has been
continuously tweaked (4b711cb13843f5082e82970dd1e8031383134a65
"mmc: sdhci-pltfm: Add structure for host-specific data" and
a4d2177f00a5252d825236c5124bc1e9918bdb41 "mmc: sdhci-pltfm: dt
device does not pass parent to sdhci_alloc_host" while there
does not seem to be any reason to use platform device's parent
in the first place.

The comment saying "Some PCI-based MFD need the parent here"
seem to refer to Timberdale FPGA driver (the only MFD driver
registering SDHCI cell, drivers/mfd/timberdale.c) but again,
the only situation when parent device matter is runtime PM,
which is not implemented for Timberdale.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: core: Remove fixed voltage regulator logic
Tim Kryger [Tue, 12 Aug 2014 05:05:12 +0000 (22:05 -0700)]
mmc: core: Remove fixed voltage regulator logic

There is no need for regulator consumers to include special logic for
fixed voltage regulators as they support regulator_set_voltage() just
like their non-fixed regulator counterparts.

Signed-off-by: Tim Kryger <tim.kryger@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: mmci: Add qcom dml support to the driver.
Srinivas Kandagatla [Tue, 29 Jul 2014 02:50:30 +0000 (03:50 +0100)]
mmc: mmci: Add qcom dml support to the driver.

On Qualcomm APQ8064 SOCs, SD card controller has an additional glue
called DML (Data Mover Local/Lite) to assist dma transfers.
This hardware needs to be setup before any dma transfer is requested.
DML itself is not a DMA engine, its just a gule between the SD card
controller and dma controller.

Most of this code has been ported from qualcomm's 3.4 kernel.

This patch adds the code necessary to intialize the hardware and setup
before doing any dma transfers.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agommc: sdhci-s3c: fix runtime PM handling on sdhci_add_host() failure
Bartlomiej Zolnierkiewicz [Thu, 7 Aug 2014 16:07:07 +0000 (18:07 +0200)]
mmc: sdhci-s3c: fix runtime PM handling on sdhci_add_host() failure

Runtime Power Management handling for the sdhci_add_host() failure
case in sdhci_s3c_probe() should match the code in sdhci_s3c_remove()
(which uses pm_runtime_disable() call which matches the earlier
pm_runtime_enable() one).  Fix it.

This patch fixes "BUG: spinlock bad magic on CPU#0, swapper/0/1" and
"Unbalanced pm_runtime_enable!" warnings.

>From the kernel log:
...
[    1.659631] s3c-sdhci 12530000.sdhci: sdhci_add_host() failed
[    1.665096] BUG: spinlock bad magic on CPU#0, swapper/0/1
[    1.670433]  lock: 0xea01e484, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0
[    1.677895] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.16.0-next-20140804-00008-ga59480f-dirty #707
[    1.687037] [<c0013ae4>] (unwind_backtrace) from [<c0010d70>] (show_stack+0x10/0x14)
[    1.694740] [<c0010d70>] (show_stack) from [<c04050c8>] (dump_stack+0x68/0xb8)
[    1.701948] [<c04050c8>] (dump_stack) from [<c0052558>] (do_raw_spin_lock+0x15c/0x1a4)
[    1.709848] [<c0052558>] (do_raw_spin_lock) from [<c040a630>] (_raw_spin_lock_irqsave+0x20/0x28)
[    1.718619] [<c040a630>] (_raw_spin_lock_irqsave) from [<c030d7d0>] (sdhci_do_set_ios+0x1c/0x5cc)
[    1.727464] [<c030d7d0>] (sdhci_do_set_ios) from [<c030ddfc>] (sdhci_runtime_resume_host+0x50/0x104)
[    1.736574] [<c030ddfc>] (sdhci_runtime_resume_host) from [<c02462dc>] (pm_generic_runtime_resume+0x2c/0x40)
[    1.746383] [<c02462dc>] (pm_generic_runtime_resume) from [<c0247898>] (__rpm_callback+0x34/0x70)
[    1.755233] [<c0247898>] (__rpm_callback) from [<c02478fc>] (rpm_callback+0x28/0x88)
[    1.762958] [<c02478fc>] (rpm_callback) from [<c02486f0>] (rpm_resume+0x384/0x4ec)
[    1.770511] [<c02486f0>] (rpm_resume) from [<c02488b0>] (pm_runtime_forbid+0x58/0x64)
[    1.778325] [<c02488b0>] (pm_runtime_forbid) from [<c030ea70>] (sdhci_s3c_probe+0x4a4/0x540)
[    1.786749] [<c030ea70>] (sdhci_s3c_probe) from [<c02429cc>] (platform_drv_probe+0x2c/0x5c)
[    1.795076] [<c02429cc>] (platform_drv_probe) from [<c02415f0>] (driver_probe_device+0x114/0x234)
[    1.803929] [<c02415f0>] (driver_probe_device) from [<c024179c>] (__driver_attach+0x8c/0x90)
[    1.812347] [<c024179c>] (__driver_attach) from [<c023ffb4>] (bus_for_each_dev+0x54/0x88)
[    1.820506] [<c023ffb4>] (bus_for_each_dev) from [<c0240df8>] (bus_add_driver+0xd8/0x1cc)
[    1.828665] [<c0240df8>] (bus_add_driver) from [<c0241db8>] (driver_register+0x78/0xf4)
[    1.836652] [<c0241db8>] (driver_register) from [<c00088a4>] (do_one_initcall+0x80/0x1d0)
[    1.844816] [<c00088a4>] (do_one_initcall) from [<c059ac94>] (kernel_init_freeable+0x108/0x1d4)
[    1.853503] [<c059ac94>] (kernel_init_freeable) from [<c0401300>] (kernel_init+0x8/0xe4)
[    1.861568] [<c0401300>] (kernel_init) from [<c000e538>] (ret_from_fork+0x14/0x3c)
[    1.869582] platform 12530000.sdhci: Driver s3c-sdhci requests probe deferral
...
[    1.997047] s3c-sdhci 12530000.sdhci: Unbalanced pm_runtime_enable!
...
[    2.027235] s3c-sdhci 12530000.sdhci: sdhci_add_host() failed
[    2.032884] platform 12530000.sdhci: Driver s3c-sdhci requests probe deferral
...

Tested on Hardkernel's Exynos4412 based ODROID-U3 board.

Fixes: 9f4e8151dbbc ("mmc: sdhci-s3c: Enable runtime power management")
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
10 years agoLinux 3.17-rc4
Linus Torvalds [Sun, 7 Sep 2014 23:09:43 +0000 (16:09 -0700)]
Linux 3.17-rc4

10 years agoDocumentation: new page link in SubmittingPatches
Sudip Mukherjee [Sun, 7 Sep 2014 18:26:12 +0000 (11:26 -0700)]
Documentation: new page link in SubmittingPatches

new link for - How to piss off a Linux kernel subsystem maintainer

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoDocumentation: NFS/RDMA: Document separate Kconfig symbols
Paul Bolle [Sun, 7 Sep 2014 18:25:55 +0000 (11:25 -0700)]
Documentation: NFS/RDMA: Document separate Kconfig symbols

The NFS/RDMA Kconfig symbol was split into separate options for client
and server in commit 2e8c12e1b765 ("xprtrdma: add separate Kconfig
options for NFSoRDMA client and server support").

Update the documentation to reflect this split.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: "J. Bruce Fields" <bfields@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoDocumentation: misc-devices: Rename freefall.c from hpfall.c in lis2lv02d
Masanari Iida [Sun, 7 Sep 2014 18:25:45 +0000 (11:25 -0700)]
Documentation: misc-devices: Rename freefall.c from hpfall.c in lis2lv02d

hpfall.c was renamed to freefall.c in 3.16, but this file still refer to
hpfall.c instead of freefall.c

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoDocumentation: i2c: rename variable "register" to "reg"
Jose Manuel Alarcon Roldan [Sun, 7 Sep 2014 18:25:00 +0000 (11:25 -0700)]
Documentation: i2c: rename variable "register" to "reg"

The example code provided with the i2c device interface documentation
won't compile since it uses the reserved word "register" to name a
variable.

The compiler fails with this error message:

 error: expected identifier or '(' before '=' token
   __u8 register = 0x20; /* Device register to access */
                 ^

Rename the variable "register" to simply "reg" in the example code.

Another couple of typos has been fixed as well.
[Change "! =" to "!=".]

Signed-off-by: Jose Alarcon Roldan <jose.alarcon.roldan@gmail.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoDocumentation: seq_file: Document seq_open_private(), seq_release_private()
Rob Jones [Sun, 7 Sep 2014 18:24:40 +0000 (11:24 -0700)]
Documentation: seq_file: Document seq_open_private(), seq_release_private()

Despite the fact that these functions have been around for years, they
are little used (only 15 uses in 13 files at the preseht time) even
though many other files use work-arounds to achieve the same result.

By documenting them, hopefully they will become more widely used.

Signed-off-by: Rob Jones <rob.jones@codethink.co.uk>
Acked-by: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoMerge tag 'pm+acpi-3.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Sun, 7 Sep 2014 18:57:27 +0000 (11:57 -0700)]
Merge tag 'pm+acpi-3.17-rc4' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:
 "These are regression fixes (ACPI sysfs, ACPI video, suspend test),
  ACPI cpuidle deadlock fix, missing runtime validation of ACPI _DSD
  output, a fix and a new CPU ID for the RAPL driver, new blacklist
  entry for the ACPI EC driver and a couple of trivial cleanups
  (intel_pstate and generic PM domains).

  Specifics:

   - Fix for recently broken test_suspend= command line argument (Rafael
     Wysocki).

   - Fixes for regressions related to the ACPI video driver caused by
     switching the default to native backlight handling in 3.16 from
     Hans de Goede.

   - Fix for a sysfs attribute of ACPI device objects that returns stale
     values sometimes due to the fact that they are cached instead of
     executing the appropriate method (_SUN) every time (broken in
     3.14).  From Yasuaki Ishimatsu.

   - Fix for a deadlock between cpuidle_lock and cpu_hotplug.lock in the
     ACPI processor driver from Jiri Kosina.

   - Runtime output validation for the ACPI _DSD device configuration
     object missing from the support for it that has been introduced
     recently.  From Mika Westerberg.

   - Fix for an unuseful and misleading RAPL (Running Average Power
     Limit) domain detection message in the RAPL driver from Jacob Pan.

   - New Intel Haswell CPU ID for the RAPL driver from Jason Baron.

   - New Clevo W350etq blacklist entry for the ACPI EC driver from Lan
     Tianyu.

   - Cleanup for the intel_pstate driver and the core generic PM domains
     code from Gabriele Mazzotta and Geert Uytterhoeven"

* tag 'pm+acpi-3.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / cpuidle: fix deadlock between cpuidle_lock and cpu_hotplug.lock
  ACPI / scan: not cache _SUN value in struct acpi_device_pnp
  cpufreq: intel_pstate: Remove unneeded variable
  powercap / RAPL: change domain detection message
  powercap / RAPL: add support for CPU model 0x3f
  PM / domains: Make generic_pm_domain.name const
  PM / sleep: Fix test_suspend= command line option
  ACPI / EC: Add msi quirk for Clevo W350etq
  ACPI / video: Disable native_backlight on HP ENVY 15 Notebook PC
  ACPI / video: Add a disable_native_backlight quirk
  ACPI / video: Fix use_native_backlight selection logic
  ACPICA: ACPI 5.1: Add support for runtime validation of _DSD package.

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Sun, 7 Sep 2014 17:59:58 +0000 (10:59 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs

Pull filesystem fixes from Al Viro:
 "Several bugfixes (all of them -stable fodder).

  Alexey's one deals with double mutex_lock() in UFS (apparently, nobody
  has tried to test "ufs: sb mutex merge + mutex_destroy" on something
  like file creation/removal on ufs).  Mine deal with two kinds of
  umount bugs, in umount propagation and in handling of automounted
  submounts, both resulting in bogus transient EBUSY from umount"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  ufs: fix deadlocks introduced by sb mutex merge
  fix EBUSY on umount() from MNT_SHRINKABLE
  get rid of propagate_umount() mistakenly treating slaves as busy.

10 years agoMerge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 7 Sep 2014 17:51:42 +0000 (10:51 -0700)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull RCU fix from Ingo Molnar:
 "A boot hang fix for the offloaded callback RCU model (RCU_NOCB_CPU=y
  && (TREE_CPU=y || TREE_PREEMPT_RC)) in certain bootup scenarios"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  rcu: Make nocb leader kthreads process pending callbacks after spawning

10 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 7 Sep 2014 17:37:48 +0000 (10:37 -0700)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull timer fixes from Thomas Gleixner:
 "Three fixlets from the timer departement:

   - Update the timekeeper before updating vsyscall and pvclock.  This
     fixes the kvm-clock regression reported by Chris and Paolo.

   - Use the proper irq work interface from NMI.  This fixes the
     regression reported by Catalin and Dave.

   - Clarify the compat_nanosleep error handling mechanism to avoid
     future confusion"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timekeeping: Update timekeeper before updating vsyscall and pvclock
  compat: nanosleep: Clarify error handling
  nohz: Restore NMI safe local irq work for local nohz kick

10 years agoufs: fix deadlocks introduced by sb mutex merge
Alexey Khoroshilov [Tue, 2 Sep 2014 07:40:17 +0000 (11:40 +0400)]
ufs: fix deadlocks introduced by sb mutex merge

Commit 0244756edc4b ("ufs: sb mutex merge + mutex_destroy") introduces
deadlocks in ufs_new_inode() and ufs_free_inode().
Most callers of that functions acqure the mutex by themselves and
ufs_{new,free}_inode() do that via lock_ufs(),
i.e we have an unavoidable double lock.

The patch proposes to resolve the issue by making sure that
ufs_{new,free}_inode() are not called with the mutex held.

Found by Linux Driver Verification project (linuxtesting.org).

Cc: stable@vger.kernel.org # 3.16
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
10 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sat, 6 Sep 2014 23:42:12 +0000 (16:42 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "A smattering of bug fixes across most architectures"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  powerpc/kvm/cma: Fix panic introduces by signed shift operation
  KVM: s390/mm: Fix guest storage key corruption in ptep_set_access_flags
  KVM: s390/mm: Fix storage key corruption during swapping
  arm/arm64: KVM: Complete WFI/WFE instructions
  ARM/ARM64: KVM: Nuke Hyp-mode tlbs before enabling MMU
  KVM: s390/mm: try a cow on read only pages for key ops
  KVM: s390: Fix user triggerable bug in dead code

10 years agoMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Sat, 6 Sep 2014 19:37:43 +0000 (12:37 -0700)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Kevin Hilman:
 "Another round of fixes from arm-soc land, which are mostly DT fixes
  for:

   - OMAP: handful of DT fixes devices on newly supported hardware
   - davinci: fix 2nd EDMA channel
   - ux500: extend previous pinctrl fix to another board
   - at91: clock registration fixes, compatibility string precision

  And one more fix for event cleanup in drivers/bus/arm-ccn"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  bus: arm-ccn: Move event cleanup routine
  ARM: at91/dt: rm9200: fix usb clock definition
  ARM: at91: rm9200: fix clock registration
  ARM: at91/dt: sam9g20: set at91sam9g20 pllb driver
  ARM: dts: dra7-evm: Add vtt regulator support
  ARM: dts: dra7-evm: Fix spi1 mux documentation
  ARM: dts: am43x-epos-evm: Disable QSPI to prevent conflict with GPMC-NAND
  ARM: OMAP2+: gpmc: Don't complain if wait pin is used without r/w monitoring
  ARM: dts: am43xx-epos-evm: Don't use read/write wait monitoring
  ARM: dts: am437x-gp-evm: Don't use read/write wait monitoring
  ARM: dts: am437x-gp-evm: Use BCH16 ECC scheme instead of BCH8
  ARM: dts: am43x-epos-evm: Use BCH16 ECC scheme instead of BCH8
  ARM: dts: am4372: fix USB regs size
  ARM: dts: am437x-gp: switch i2c0 to 100KHz
  ARM: dts: dra7-evm: Fix 8th NAND partition's name
  ARM: dts: dra7-evm: Fix i2c3 pinmux and frequency
  ARM: ux500: disable msp2 node on Snowball
  ARM: edma: Fix configuration parsing for SoCs with multiple eDMA3 CC
  ARM: dts: set 'ti,set-rate-parent' for dpll4_m5x2 clock

10 years agoMerge tag 'xfs-for-linus-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 6 Sep 2014 19:13:17 +0000 (12:13 -0700)]
Merge tag 'xfs-for-linus-3.17-rc3' of git://git./linux/kernel/git/dgc/linux-xfs

Pull xfs fixes from Dave Chinner:
 "The fixes all address recently discovered data corruption issues.

  The original Direct IO issue was discovered by Chris Mason @ Facebook
  on a production workload which mixed buffered reads with direct reads
  and writes IO to the same file.  The fix for that exposed other issues
  with page invalidation (exposed by millions of fsx operations) failing
  due to dirty buffers beyond EOF.

  Finally, the collapse_range code could also cause problems due to
  racing writeback changing the extent map while it was being shifted
  around.  The commits for that problem are simple mitigation fixes that
  prevent the problem from occuring.  A more robust fix for 3.18 that
  addresses the underlying problem is currently being worked on by
  Brian.

  Summary of fixes:
   - a direct IO read/buffered read data corruption
   - the associated fallout from the DIO data corruption fix
   - collapse range bugs that are potential data corruption issues"

* tag 'xfs-for-linus-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs:
  xfs: trim eofblocks before collapse range
  xfs: xfs_file_collapse_range is delalloc challenged
  xfs: don't log inode unless extent shift makes extent modifications
  xfs: use ranged writeback and invalidation for direct IO
  xfs: don't zero partial page cache pages during O_DIRECT writes
  xfs: don't zero partial page cache pages during O_DIRECT writes
  xfs: don't dirty buffers beyond EOF

10 years agoMerge tag 'for-linus-20140905' of git://git.infradead.org/linux-mtd
Linus Torvalds [Sat, 6 Sep 2014 19:12:09 +0000 (12:12 -0700)]
Merge tag 'for-linus-20140905' of git://git.infradead.org/linux-mtd

Pull mtd fixes from Brian Norris:
 "Two trivial MTD updates for 3.17-rc4:

   - a tiny comment tweak, to kill a bunch of DocBook warnings added
     during the merge window

   - a small fixup to the OTP routines' error handling"

* tag 'for-linus-20140905' of git://git.infradead.org/linux-mtd:
  mtd: nand: fix DocBook warnings on nand_sdr_timings doc
  mtd: cfi_cmdset_0002: check return code for get_chip()

10 years agotimekeeping: Update timekeeper before updating vsyscall and pvclock
Thomas Gleixner [Sat, 6 Sep 2014 10:24:49 +0000 (12:24 +0200)]
timekeeping: Update timekeeper before updating vsyscall and pvclock

The update_walltime() code works on the shadow timekeeper to make the
seqcount protected region as short as possible. But that update to the
shadow timekeeper does not update all timekeeper fields because it's
sufficient to do that once before it becomes life. One of these fields
is tkr.base_mono. That stays stale in the shadow timekeeper unless an
operation happens which copies the real timekeeper to the shadow.

The update function is called after the update calls to vsyscall and
pvclock. While not correct, it did not cause any problems because none
of the invoked update functions used base_mono.

commit cbcf2dd3b3d4 (x86: kvm: Make kvm_get_time_and_clockread()
nanoseconds based) changed that in the kvm pvclock update function, so
the stale mono_base value got used and caused kvm-clock to malfunction.

Put the update where it belongs and fix the issue.

Reported-by: Chris J Arges <chris.j.arges@canonical.com>
Reported-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: John Stultz <john.stultz@linaro.org>
Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1409050000570.3333@nanos
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
10 years agocompat: nanosleep: Clarify error handling
Thomas Gleixner [Sat, 6 Sep 2014 10:18:07 +0000 (12:18 +0200)]
compat: nanosleep: Clarify error handling

The error handling in compat_sys_nanosleep() is correct, but
completely non obvious. Document it and restrict it to the
-ERESTART_RESTARTBLOCK return value for clarity.

Reported-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
10 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Fri, 5 Sep 2014 20:45:09 +0000 (13:45 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c bugfixes from Wolfram Sang:
 "I2C driver bugfixes for the 3.17 release.  Details can be found in the
  commit messages, yet I think this is typical driver stuff"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  Revert "i2c: rcar: remove spinlock"
  i2c: at91: add bound checking on SMBus block length bytes
  i2c: rk3x: fix bug that cause transfer fails in master receive mode
  i2c: at91: Fix a race condition during signal handling in at91_do_twi_xfer.
  i2c: mv64xxx: continue probe when clock-frequency is missing
  i2c: rcar: fix MNR interrupt handling

10 years agoMerge tag 'at91-fixes' of git://github.com/at91linux/linux-at91 into fixes
Kevin Hilman [Fri, 5 Sep 2014 20:28:33 +0000 (13:28 -0700)]
Merge tag 'at91-fixes' of git://github.com/at91linux/linux-at91 into fixes

Merge "at91: fixes for 3.17 #1" from Nicols Ferre:

First AT91 fixes batch for 3.17:
- compatibility string precision
- clock registration and USB DT fix for at91rm9200

* tag 'at91-fixes' of git://github.com/at91linux/linux-at91:
  ARM: at91/dt: rm9200: fix usb clock definition
  ARM: at91: rm9200: fix clock registration
  ARM: at91/dt: sam9g20: set at91sam9g20 pllb driver

Signed-off-by: Kevin Hilman <khilman@linaro.org>
10 years agobus: arm-ccn: Move event cleanup routine
Pawel Moll [Tue, 2 Sep 2014 15:26:11 +0000 (16:26 +0100)]
bus: arm-ccn: Move event cleanup routine

The function cleaning up an initialized event
was called from the "event_del" handler, instead
of being used as the "destroy" callback. In case of
events group allocation this caused NULL pointer
dereference (as events are added and deleted
multiple times then). Fixed now.

Signed-off-by: Pawel Moll <mail@pawelmoll.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux...
Linus Torvalds [Fri, 5 Sep 2014 15:43:48 +0000 (08:43 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/geert/linux-m68k

Pull m68k updates from Geert Uytterhoeven:
 "Wire up new syscalls getrandom and memfd_create"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Wire up memfd_create
  m68k: Wire up getrandom