| Commit message (Collapse) | Author | Age | Files | Lines |
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc mremap fix from Ben Herrenschmidt:
"This is the patch that I had sent after -rc8 and which we decided to
wait before merging. It's based on a different tree than my -next
branch (it needs some pre-reqs that were in -rc4 or so while my -next
is based on -rc1) so I left it as a separate branch for your to pull.
It's identical to the request I did 2 or 3 weeks back.
This fixes crashes in mremap with THP on powerpc.
The fix however requires a small change in the generic code. It moves
a condition into a helper we can override from the arch which is
harmless, but it *also* slightly changes the order of the set_pmd and
the withdraw & deposit, which should be fine according to Kirill (who
wrote that code) but I agree -rc8 is a bit late...
It was acked by Kirill and Andrew told me to just merge it via powerpc"
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/thp: Fix crash on mremap
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This patch fix the below crash
NIP [c00000000004cee4] .__hash_page_thp+0x2a4/0x440
LR [c0000000000439ac] .hash_page+0x18c/0x5e0
...
Call Trace:
[c000000736103c40] [00001ffffb000000] 0x1ffffb000000(unreliable)
[437908.479693] [c000000736103d50] [c0000000000439ac] .hash_page+0x18c/0x5e0
[437908.479699] [c000000736103e30] [c00000000000924c] .do_hash_page+0x4c/0x58
On ppc64 we use the pgtable for storing the hpte slot information and
store address to the pgtable at a constant offset (PTRS_PER_PMD) from
pmd. On mremap, when we switch the pmd, we need to withdraw and deposit
the pgtable again, so that we find the pgtable at PTRS_PER_PMD offset
from new pmd.
We also want to move the withdraw and deposit before the set_pmd so
that, when page fault find the pmd as trans huge we can be sure that
pgtable can be located at the offset.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"The first two patches fix the debugfs README file to reflect better
the new features added to 3.14.
The third patch is a minor bugfix to the trace_puts() functions that
will crash the system if a developer adds one before the tracing
system is setup. It also affects trace_printk() if it has no
arguments, as the code will convert it to a trace_puts() as well.
Note, this bug will not affect unmodified kernels, as trace_printk()
and trace_puts() should only be used by developers for testing"
* tag 'trace-fixes-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Check if tracing is enabled in trace_puts()
tracing: Fix formatting of trace README file
tracing/README: Add event file usage to tracing mini-HOWTO
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If trace_puts() is used very early in boot up, it can crash the machine
if it is called before the ring buffer is allocated. If a trace_printk()
is used with no arguments, then it will be converted into a trace_puts()
and suffer the same fate.
Cc: stable@vger.kernel.org # 3.10+
Fixes: 09ae72348ecc "tracing: Add trace_puts() for even faster trace_printk() tracing"
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Fix the formatting of the README file in the trace debugfs to fit in
an 80 character window.
Also add a comment about the event trigger counter with regards to
traceon and traceoff.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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It would be useful to have a cheat-sheet for everything under
tracing/events/ alongside the existing text describing the other files
in the tracing/ dir.
Add short descriptions of the directories and files under events/
along with examples, similar to the existing text for the other files
in tracing/.
Also clean up a few minor alignment problems noticed when adding the
new text.
Link: http://lkml.kernel.org/r/1389993104.3040.445.camel@empanada
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb
Pull swiotlb bug-fixes from Konrad Rzeszutek Wilk:
- Don't DoS with 'swiotlb is full' message.
- Documentation update.
* tag 'stable/for-linus-3.14-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb:
swiotlb: Don't DoS us with 'swiotlb buffer is full' (v2)
swiotlb: update format
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There is no need for that so lets use ratelimiting.
Also add some extra information to be helpful.
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
[v2: s/ld/zs on the printk]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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Documentation/kernel-parameters.txt doesn't contain up-to-date
documentation regarding swiotlb= parameter. Update it.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
Pull pwm changes from Thierry Reding:
"The patches for this release cycle include various enhancements
(device tree support, better compile coverage, ...) for existing
drivers. There is a new driver for Atmel SoCs.
Various drivers as well as the sysfs support received minor fixes and
cleanups"
* tag 'pwm/for-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
pwm: tiecap: Remove duplicate put_sync call
pwm: tiehrpwm: use dev_err() instead of pr_err()
pwm: pxa: remove unnecessary space before tabs
pwm: ep93xx: split module author names
pwm: use seq_puts() instead of seq_printf()
pwm: atmel-pwm: Do not unprepare clock after successful registration
of: Add Atmel PWM controller device tree binding
pwm: atmel-pwm: Add Atmel PWM controller driver
backlight: pwm_bl: Remove error message upon devm_kzalloc() failure
pwm: pca9685: depends on I2C rather than REGMAP_I2C
pwm: renesas-tpu: Enable driver compilation with COMPILE_TEST
pwm: jz4740: Use devm_clk_get()
pwm: jz4740: Pass device to clk_get()
pwm: sysfs: Convert to use ATTRIBUTE_GROUPS macro
pwm: pxa: Add device tree support
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Remove duplicate 'pm_runtime_put_sync' in the remove path.
Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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Use dev_err() instead of pr_err() to provide a better message
to userspace.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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Remove unnecessary space before tabs in order to fix the following
checkpatch warning.
WARNING: please, no space before tabs
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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Split module author names in order to fix the following
checkpatch warning.
WARNING: quoted string split across lines
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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For a constant format without additional arguments, use seq_puts()
instead of seq_printf(). Also, the following checkpatch warning is
fixed.
WARNING: Prefer seq_puts to seq_printf
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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When the PWM controller is registered successfully, the clock can not
unprepare, so fix it.
Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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The Atmel PWM controller uses the standard device tree bindings for PWM
controllers.
Signed-off-by: Bo Shen <voice.shen@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Kumar Gala <galak@codeaurora.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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Add a PWM framework driver for the PWM controller found on Atmel SoCs.
Signed-off-by: Bo Shen <voice.shen@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
[thierry.reding: coding style and other minor cleanups]
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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No need to have a specific OOM message, since there is generic MM out of memory
message in place.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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REGMAP_I2C is not a visible config option.
Thus make PWM_PCA9685 depend on I2c and then select REGMAP_I2C.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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This helps increasing build testing coverage.
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: linux-pwm@vger.kernel.org
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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Using the managed version of clk_get() makes the code a bit shorter and the
error paths less complicated.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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In preparation to switching the jz4740 clk driver to the common clk framework
make sure to pass the device to clk_get().
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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Use new ATTRIBUTE_GROUPS macro to reduce the number of lines of code.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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This patch adds device tree support to the PXA's PWM driver. Nothing
needs to be extracted from the device tree node by the PWM device.
Client devices need only specify the period; the per-chip index is
implicitly zero because one device node must be present for each PWM
output in use. This approach is more convenient due to the wide
variability in the number of PWM channels present across the various PXA
variants, and is made possible by the fact that the register sets for
each PWM channel are segregated from each other. An of_xlate() method
is added to parse this single-cell node. The existing ID table is
reused for the match table data.
Tested on a Palm Treo 680 (both platform data and DT cases).
Signed-off-by: Mike Dunn <mikedunn@newsguy.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
Pull firewire updates from Stefan Richter:
"IEEE 1394 (FireWire) subsystem changes:
- make remote debugging over 1394 a runtime option instead of a
buildtime option
- extend remote debug access past the 4 GB barrier on respectively
capable hardware
- documentation update"
* tag 'firewire-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: Enable remote DMA above 4 GB
firewire: ohci: Turn remote DMA support into a module parameter
Documentation/: update FireWire debugging documentation
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This makes all of a machine's memory accessible to remote debugging via
FireWire, using the physical response unit (i.e. RDMA) of OHCI-1394 link
layer controllers.
This requires actual support by the controller. The only ones currently
known to support it are Agere/LSI FW643. Most if not all other OHCI-1394
controllers do not implement the optional Physical Upper Bound register.
With them, RDMA will continue to be limited to the lowermost 4 GB.
firewire-ohci's startup message in the kernel log is augmented to tell
whether the controller does expose more than 4 GB to RDMA.
While OHCI-1394 allows for a maximum Physical Upper Bound of
0xffff'0000'0000 (near 256 TB), this implementation sets it to
0x8000'0000'0000 (128 TB) in order to avoid interference with applications
that require interrupt-served asynchronous request reception at
respectively low addresses.
Note, this change does not switch remote DMA on. It only increases the
range of remote access to all memory (instead of just 4 GB) whenever
remote DMA was switched on by other means. The latter is achieved by
setting firewire-ohci's remote_dma parameter, or if the physical DMA
filter is opened through firewire-sbp2.
Derived from patch "firewire: Enable physical DMA above 4GB" by
Peter Hurley <peter@hurleysoftware.com> from March 27, 2013.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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This makes it possible to debug kernel over FireWire without the need to
recompile it.
[Stefan R: changed description from "...0" to "...N"]
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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The old firewire stack is long dead now and a new version firescope has
been released with support for current kernels.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Cc: Rob Landley <rob@landley.net>
Cc: Justin P. Mattock <justinmattock@gmail.com>
Cc: Bernhard Kaindl <bk@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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Pull cris changes from Jesper Nilsson:
"Mostly removal of deprecated or old code, but also a long promised
update of the CRIS syscalls"
* tag 'cris-for-3.14' of git://jni.nu/cris:
Drop code for CRISv10 CPU simulator
Cleanup whitespace, remove old author tag
CRIS: Add missing syscalls
cris: sync_serial: remove interruptible_sleep_on
cris: remove deprecated IRQF_DISABLED
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That simulator is dead and redundant.
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
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Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
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Complete list of syscalls for CRISv10 and CRISv32.
Clean up some whitespace at the same time.
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
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sleep_on and its variants are racy and going away. This replaces
the two uses in the cris sync_serial drivers with the equivalent
but race-free wait_event_interruptible.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Mikael Starvik <starvik@axis.com>
Cc: linux-cris-kernel@axis.com
Signed-off-by: Jesper Nilsson <jespern@axis.com>
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This patch proposes to remove the IRQF_DISABLED flag from CRIS
architecture code. It's a NOOP since 2.6.35 and it will be removed
one day.
Comments mentioning IRQF_DISABLED are also updated, knowing
that all interrupts are now "fast interrupts", their handlers
running with interrupts disabled.
Don't hesitate to let me know if you have other ways of
rephrasing the comments!
This is an update for 3.11 of a patch already sent for 3.10
Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: Jesper Nilsson <jespern@axis.com>
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Pull UML changes from Richard Weinberger:
"This time only various cleanups and housekeeping patches"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
um: hostfs: make functions static
um: Include generic barrier.h
um: Removed unused attributes from thread_struct
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The hostfs_*() callback functions are all only used within
hostfs_kern.c, so make them static.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: user-mode-linux-devel@lists.sourceforge.net
Signed-off-by: Richard Weinberger <richard@nod.at>
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...to get smp_store_release().
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
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temp_stack and mm_count have no users and can be killed.
Signed-off-by: Richard Weinberger <richard@nod.at>
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git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc
Pull MMC updates from Chris Ball:
"MMC highlights for 3.14:
Core:
- Avoid get_cd() on cards marked nonremovable
Drivers:
- arasan: New driver for controllers found in e.g. Xilinx Zynq SoC
- dwmmc: Support Hisilicon K3 SoC controllers
- esdhc-imx: Support for HS200 mode, DDR modes on MX6, runtime PM
- sdhci-pci: Support O2Micro/BayHubTech controllers used in laptops
like Lenovo ThinkPad W540, Dell Latitude E5440, Dell Latitude E6540
- tegra: Support Tegra124 SoCs"
* tag 'mmc-updates-for-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (55 commits)
mmc: sdhci-pci: Fix possibility of chip->fixes being null
mmc: sdhci-pci: Fix BYT sd card getting stuck in runtime suspend
mmc: sdhci: Allow for long command timeouts
mmc: sdio: add a quirk for broken SDIO_CCCR_INTx polling
mmc: sdhci: fix lockdep error in tuning routine
mmc: dw_mmc: k3: remove clk_table
mmc: dw_mmc: fix dw_mci_get_cd
mmc: dw_mmc: fix sparse non static symbol warning
mmc: sdhci-esdhc-imx: fix warning during module remove function
mmc: sdhci-esdhc-imx: fix access hardirq-unsafe lock in atomic context
mmc: core: sd: implement proper support for sd3.0 au sizes
mmc: atmel-mci: add vmmc-supply support
mmc: sdhci-pci: add broken HS200 quirk for Intel Merrifield
mmc: sdhci: add quirk for broken HS200 support
mmc: arasan: Add driver for Arasan SDHCI
mmc: dw_mmc: add dw_mmc-k3 for k3 platform
mmc: dw_mmc: use slot-gpio to handle cd pin
mmc: sdhci-pci: add support of O2Micro/BayHubTech SD hosts
mmc: sdhci-pci: break out definitions to header file
mmc: tmio: fixup compile error
...
Conflicts:
MAINTAINERS
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It is possible for chip->fixes to be null. Check before dereferencing it.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable <stable@vger.kernel.org> # 3.11+
Signed-off-by: Chris Ball <chris@printf.net>
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A host controller for a SD card may need a GPIO for card detect in order
to wake up from runtime suspend when a card is inserted. If that GPIO is
not configured, then the host controller will not wake up. Fix that for
the affected devices by not enabling runtime PM unless the GPIO is
successfully set up.
This affects BYT sd card host controller which had runtime PM enabled from
v3.11. For completeness, the MFD sd card host controller is flagged also.
The original patch before rebasing (see link below) was tested on v3.11.10
and v3.12.4 although the patch applied with some offsets and fuzz. The
original patch is here:
http://marc.info/?l=linux-mmc&m=138676702327057
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable <stable@vger.kernel.org> # 3.11+
Signed-off-by: Chris Ball <chris@printf.net>
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The driver has a timer with a 10 second timeout to catch devices that stop
responding. However it is possible for commands to take even longer than
that. Change the timer timeout to reflect the command timeout.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <chris@printf.net>
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Polling SDIO_CCCR_INTx could create a fake interrupt with Marvell
SD8797 card. Add a quirk to handle this case. The fixup here is
to issue a dummy CMD52 read to function 0 register 0xff, and this
dummy read must be right after SDIO_CCCR_INTx is read.
Patch has been verified on a dw_mmc controller (Samsung Chromebook)
with MMC_CAP_SDIO_IRQ disabled.
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Reviewed-by: Paul Stewart <pstew@chromium.org>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
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The sdhci_execute_tuning routine gets lock separately by
disable_irq(host->irq);
spin_lock(&host->lock);
It will cause the following lockdep error message since the &host->lock
could also be got in irq context.
Use spin_lock_irqsave/spin_unlock_restore instead to get rid of
this error message.
[ INFO: inconsistent lock state ]
3.13.0-rc1+ #287 Not tainted
---------------------------------
inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.
kworker/u2:1/33 [HC0[0]:SC0[0]:HE1:SE1] takes:
(&(&host->lock)->rlock){?.-...}, at: [<8045f7f4>] sdhci_execute_tuning+0x4c/0x710
{IN-HARDIRQ-W} state was registered at:
[<8005f030>] mark_lock+0x140/0x6ac
[<80060760>] __lock_acquire+0xb30/0x1cbc
[<800620d0>] lock_acquire+0x70/0x84
[<8061d1c8>] _raw_spin_lock+0x30/0x40
[<804605cc>] sdhci_irq+0x24/0xa68
[<8006b1d4>] handle_irq_event_percpu+0x54/0x18c
[<8006b350>] handle_irq_event+0x44/0x64
[<8006e50c>] handle_fasteoi_irq+0xa0/0x170
[<8006a8f0>] generic_handle_irq+0x30/0x44
[<8000f238>] handle_IRQ+0x54/0xbc
[<8000864c>] gic_handle_irq+0x30/0x64
[<80013024>] __irq_svc+0x44/0x5c
[<80329bf4>] dev_vprintk_emit+0x50/0x58
[<80329c24>] dev_printk_emit+0x28/0x30
[<80329fec>] __dev_printk+0x4c/0x90
[<8032a180>] dev_err+0x3c/0x48
[<802dd4f0>] _regulator_get+0x158/0x1cc
[<802dd5b4>] regulator_get_optional+0x18/0x1c
[<80461df4>] sdhci_add_host+0x42c/0xbd8
[<80464820>] sdhci_esdhc_imx_probe+0x378/0x67c
[<8032ee88>] platform_drv_probe+0x20/0x50
[<8032d48c>] driver_probe_device+0x118/0x234
[<8032d690>] __driver_attach+0x9c/0xa0
[<8032b89c>] bus_for_each_dev+0x68/0x9c
[<8032cf44>] driver_attach+0x20/0x28
[<8032cbc8>] bus_add_driver+0x148/0x1f4
[<8032dce0>] driver_register+0x80/0x100
[<8032ee54>] __platform_driver_register+0x50/0x64
[<8084b094>] sdhci_esdhc_imx_driver_init+0x18/0x20
[<80008980>] do_one_initcall+0x108/0x16c
[<8081cca4>] kernel_init_freeable+0x10c/0x1d0
[<80611b28>] kernel_init+0x10/0x120
[<8000e9c8>] ret_from_fork+0x14/0x2c
irq event stamp: 805
hardirqs last enabled at (805): [<8061d43c>] _raw_spin_unlock_irqrestore+0x38/0x4c
hardirqs last disabled at (804): [<8061d2c8>] _raw_spin_lock_irqsave+0x24/0x54
softirqs last enabled at (570): [<8002b824>] __do_softirq+0x1c4/0x290
softirqs last disabled at (561): [<8002bcf4>] irq_exit+0xb4/0x10c
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&(&host->lock)->rlock);
<Interrupt>
lock(&(&host->lock)->rlock);
*** DEADLOCK ***
2 locks held by kworker/u2:1/33:
#0: (kmmcd){.+.+..}, at: [<8003db18>] process_one_work+0x128/0x468
#1: ((&(&host->detect)->work)){+.+...}, at: [<8003db18>] process_one_work+0x128/0x468
stack backtrace:
CPU: 0 PID: 33 Comm: kworker/u2:1 Not tainted 3.13.0-rc1+ #287
Workqueue: kmmcd mmc_rescan
Backtrace:
[<80012160>] (dump_backtrace+0x0/0x10c) from [<80012438>] (show_stack+0x18/0x1c)
r6:bfad0900 r5:00000000 r4:8088ecc8 r3:bfad0900
[<80012420>] (show_stack+0x0/0x1c) from [<806169ec>] (dump_stack+0x84/0x9c)
[<80616968>] (dump_stack+0x0/0x9c) from [<806147b4>] (print_usage_bug+0x260/0x2d0)
r5:8076ba88 r4:80977410
[<80614554>] (print_usage_bug+0x0/0x2d0) from [<8005f0d0>] (mark_lock+0x1e0/0x6ac)
r9:8005e678 r8:00000000 r7:bfad0900 r6:00001015 r5:bfad0cd0
r4:00000002
[<8005eef0>] (mark_lock+0x0/0x6ac) from [<80060234>] (__lock_acquire+0x604/0x1cbc)
[<8005fc30>] (__lock_acquire+0x0/0x1cbc) from [<800620d0>] (lock_acquire+0x70/0x84)
[<80062060>] (lock_acquire+0x0/0x84) from [<8061d1c8>] (_raw_spin_lock+0x30/0x40)
r7:00000000 r6:bfb63000 r5:00000000 r4:bfb60568
[<8061d198>] (_raw_spin_lock+0x0/0x40) from [<8045f7f4>] (sdhci_execute_tuning+0x4c/0x710)
r4:bfb60000
[<8045f7a8>] (sdhci_execute_tuning+0x0/0x710) from [<80453454>] (mmc_sd_init_card+0x5f8/0x660)
[<80452e5c>] (mmc_sd_init_card+0x0/0x660) from [<80453748>] (mmc_attach_sd+0xb4/0x180)
r9:bf92d400 r8:8065f364 r7:00061a80 r6:bfb60000 r5:8065f358
r4:bfb60000
[<80453694>] (mmc_attach_sd+0x0/0x180) from [<8044d9f8>] (mmc_rescan+0x284/0x2f0)
r5:8065f358 r4:bfb602f8
[<8044d774>] (mmc_rescan+0x0/0x2f0) from [<8003db94>] (process_one_work+0x1a4/0x468)
r8:00000000 r7:bfb55eb0 r6:bf80dc00 r5:bfb602f8 r4:bfb35980
r3:8044d774
[<8003d9f0>] (process_one_work+0x0/0x468) from [<8003e850>] (worker_thread+0x118/0x3e0)
[<8003e738>] (worker_thread+0x0/0x3e0) from [<80044de0>] (kthread+0xd4/0xf0)
[<80044d0c>] (kthread+0x0/0xf0) from [<8000e9c8>] (ret_from_fork+0x14/0x2c)
r7:00000000 r6:00000000 r5:80044d0c r4:bfb37b40
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <chris@printf.net>
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Remove clk_table and directly use ios->clock as clock source rate.
Abstract init clock rate and max clock limitation in clk.c
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Chris Ball <chris@printf.net>
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bf626e5550f24aec ("mmc: dw_mmc: use slot-gpio to handle cd pin") caused
CDETECT to be ignored, since negated return value of mmc_gpio_get_cd(mmc)
can not be checked by IS_ERR_VALUE.
Also, add spin_lock_bh(&host->lock) for atomic access to
DW_MMC_CARD_PRESENT, otherwise sd detect may occasionally fail.
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Reported-by: Kevin Hilman <khilman@linaro.org>
Reviewed-by: Sachin Kamat <sachin.kamat@linaro.org>
Tested-by: Sachin Kamat <sachin.kamat@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Chris Ball <chris@printf.net>
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Fixes the following sparse warning:
drivers/mmc/host/dw_mmc-k3.c:116:1: warning:
symbol 'dw_mci_k3_pmops' was not declared. Should it be static?
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Chris Ball <chris@printf.net>
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Since the clock is managed by runtime pm currently, we do not need
disable it again during driver remove function, or it will cause
clock disable count mismatch issue since the clocks have already been disabled.
The issue can be simply reproduced by unbind the devices via sysfs.
mx6slevk:/sys/bus/platform/drivers/sdhci-esdhc-imx# echo 2194000.usdhc > unbind
mmc1: card aaaa removed
------------[ cut here ]------------
WARNING: CPU: 0 PID: 657 at drivers/clk/clk.c:842 __clk_disable+0x68/0x88()
Modules linked in:
CPU: 0 PID: 657 Comm: sh Not tainted 3.13.0-rc1+ #285
Backtrace:
[<80012160>] (dump_backtrace+0x0/0x10c) from [<80012438>] (show_stack+0x18/0x1c)
r6:80481370 r5:00000000 r4:8088ecc8 r3:00000000
[<80012420>] (show_stack+0x0/0x1c) from [<80616b14>] (dump_stack+0x84/0x9c)
[<80616a90>] (dump_stack+0x0/0x9c) from [<80027158>] (warn_slowpath_common+0x70/0x94)
r5:00000009 r4:00000000
[<800270e8>] (warn_slowpath_common+0x0/0x94) from [<80027220>] (warn_slowpath_null+0x24/0x2c)
r8:bec4ff78 r7:0000000e r6:bf91d800 r5:bf81d080 r4:bf81d080
[<800271fc>] (warn_slowpath_null+0x0/0x2c) from [<80481370>] (__clk_disable+0x68/0x88)
[<80481308>] (__clk_disable+0x0/0x88) from [<8048148c>] (clk_disable+0x20/0x2c)
r4:200f0113 r3:bf95ec00
[<8048146c>] (clk_disable+0x0/0x2c) from [<80463bd8>] (sdhci_esdhc_imx_remove+0x64/0xa4)
r5:bf81d080 r4:bfabb010
[<80463b74>] (sdhci_esdhc_imx_remove+0x0/0xa4) from [<8032e82c>] (platform_drv_remove+0x20/0x24)
r6:808ae0e0 r5:808ae0e0 r4:bf91d810 r3:80463b74
[<8032e80c>] (platform_drv_remove+0x0/0x24) from [<8032d010>] (__device_release_driver+0x78/0xd0)
[<8032cf98>] (__device_release_driver+0x0/0xd0) from [<8032d090>] (device_release_driver+0x28/0x34)
r5:bf91d810 r4:bf91d844
[<8032d068>] (device_release_driver+0x0/0x34) from [<8032c0c8>] (unbind_store+0x80/0xc4)
r5:bf91d810 r4:80899ba0
[<8032c048>] (unbind_store+0x0/0xc4) from [<8032b648>] (drv_attr_store+0x28/0x34)
r7:bed73100 r6:0000000e r5:00000000 r4:8032b620
[<8032b620>] (drv_attr_store+0x0/0x34) from [<80140580>] (sysfs_write_file+0x1b0/0x1e4)
[<801403d0>] (sysfs_write_file+0x0/0x1e4) from [<800dcda0>] (vfs_write+0xb4/0x190)
[<800dccec>] (vfs_write+0x0/0x190) from [<800dd3e4>] (SyS_write+0x44/0x80)
r9:0000000e r8:00000000 r7:01a00408 r6:bf3b1c00 r5:00000000
r4:00000000
[<800dd3a0>] (SyS_write+0x0/0x80) from [<8000e900>] (ret_fast_syscall+0x0/0x48)
r9:bec4e000 r8:8000eac4 r7:00000004 r6:76f5fb40 r5:01a00408
r4:0000000e
---[ end trace a0897d268e6233b2 ]---
If without runtime pm, we just run as before to match the clock enable
in probe function.
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
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Sometimes we may meet the following lockdep issue.
The root cause is .set_clock callback is executed with spin_lock_irqsave
in sdhci_do_set_ios. However, the IMX set_clock callback will try to access
clk_get_rate which is using a mutex lock.
The fix avoids access mutex in .set_clock callback by initializing the
pltfm_host->clock at probe time and use it later instead of calling
clk_get_rate again in atomic context.
[ INFO: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected ]
3.13.0-rc1+ #285 Not tainted
------------------------------------------------------
kworker/u8:1/29 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
(prepare_lock){+.+...}, at: [<80480b08>] clk_prepare_lock+0x44/0xe4
and this task is already holding:
(&(&host->lock)->rlock#2){-.-...}, at: [<804611f4>] sdhci_do_set_ios+0x20/0x720
which would create a new lock dependency:
(&(&host->lock)->rlock#2){-.-...} -> (prepare_lock){+.+...}
but this new dependency connects a HARDIRQ-irq-safe lock:
(&(&host->lock)->rlock#2){-.-...}
... which became HARDIRQ-irq-safe at:
[<8005f030>] mark_lock+0x140/0x6ac
[<80060760>] __lock_acquire+0xb30/0x1cbc
[<800620d0>] lock_acquire+0x70/0x84
[<8061d2f0>] _raw_spin_lock+0x30/0x40
[<80460668>] sdhci_irq+0x24/0xa68
[<8006b1d4>] handle_irq_event_percpu+0x54/0x18c
[<8006b350>] handle_irq_event+0x44/0x64
[<8006e50c>] handle_fasteoi_irq+0xa0/0x170
[<8006a8f0>] generic_handle_irq+0x30/0x44
[<8000f238>] handle_IRQ+0x54/0xbc
[<8000864c>] gic_handle_irq+0x30/0x64
[<80013024>] __irq_svc+0x44/0x5c
[<80614c58>] printk+0x38/0x40
[<804622a8>] sdhci_add_host+0x844/0xbcc
[<80464948>] sdhci_esdhc_imx_probe+0x378/0x67c
[<8032ee88>] platform_drv_probe+0x20/0x50
[<8032d48c>] driver_probe_device+0x118/0x234
[<8032d690>] __driver_attach+0x9c/0xa0
[<8032b89c>] bus_for_each_dev+0x68/0x9c
[<8032cf44>] driver_attach+0x20/0x28
[<8032cbc8>] bus_add_driver+0x148/0x1f4
[<8032dce0>] driver_register+0x80/0x100
[<8032ee54>] __platform_driver_register+0x50/0x64
[<8084b094>] sdhci_esdhc_imx_driver_init+0x18/0x20
[<80008980>] do_one_initcall+0x108/0x16c
[<8081cca4>] kernel_init_freeable+0x10c/0x1d0
[<80611c50>] kernel_init+0x10/0x120
[<8000e9c8>] ret_from_fork+0x14/0x2c
to a HARDIRQ-irq-unsafe lock:
(prepare_lock){+.+...}
... which became HARDIRQ-irq-unsafe at:
... [<8005f030>] mark_lock+0x140/0x6ac
[<8005f604>] mark_held_locks+0x68/0x12c
[<8005f780>] trace_hardirqs_on_caller+0xb8/0x1d8
[<8005f8b4>] trace_hardirqs_on+0x14/0x18
[<8061a130>] mutex_trylock+0x180/0x20c
[<80480ad8>] clk_prepare_lock+0x14/0xe4
[<804816a4>] clk_notifier_register+0x28/0xf0
[<80015120>] twd_clk_init+0x50/0x68
[<80008980>] do_one_initcall+0x108/0x16c
[<8081cca4>] kernel_init_freeable+0x10c/0x1d0
[<80611c50>] kernel_init+0x10/0x120
[<8000e9c8>] ret_from_fork+0x14/0x2c
other info that might help us debug this:
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(prepare_lock);
local_irq_disable();
lock(&(&host->lock)->rlock#2);
lock(prepare_lock);
<Interrupt>
lock(&(&host->lock)->rlock#2);
*** DEADLOCK ***
3 locks held by kworker/u8:1/29:
#0: (kmmcd){.+.+.+}, at: [<8003db18>] process_one_work+0x128/0x468
#1: ((&(&host->detect)->work)){+.+.+.}, at: [<8003db18>] process_one_work+0x128/0x468
#2: (&(&host->lock)->rlock#2){-.-...}, at: [<804611f4>] sdhci_do_set_ios+0x20/0x720
the dependencies between HARDIRQ-irq-safe lock and the holding lock:
-> (&(&host->lock)->rlock#2){-.-...} ops: 330 {
IN-HARDIRQ-W at:
[<8005f030>] mark_lock+0x140/0x6ac
[<80060760>] __lock_acquire+0xb30/0x1cbc
[<800620d0>] lock_acquire+0x70/0x84
[<8061d2f0>] _raw_spin_lock+0x30/0x40
[<80460668>] sdhci_irq+0x24/0xa68
[<8006b1d4>] handle_irq_event_percpu+0x54/0x18c
[<8006b350>] handle_irq_event+0x44/0x64
[<8006e50c>] handle_fasteoi_irq+0xa0/0x170
[<8006a8f0>] generic_handle_irq+0x30/0x44
[<8000f238>] handle_IRQ+0x54/0xbc
[<8000864c>] gic_handle_irq+0x30/0x64
[<80013024>] __irq_svc+0x44/0x5c
[<80614c58>] printk+0x38/0x40
[<804622a8>] sdhci_add_host+0x844/0xbcc
[<80464948>] sdhci_esdhc_imx_probe+0x378/0x67c
[<8032ee88>] platform_drv_probe+0x20/0x50
[<8032d48c>] driver_probe_device+0x118/0x234
[<8032d690>] __driver_attach+0x9c/0xa0
[<8032b89c>] bus_for_each_dev+0x68/0x9c
[<8032cf44>] driver_attach+0x20/0x28
[<8032cbc8>] bus_add_driver+0x148/0x1f4
[<8032dce0>] driver_register+0x80/0x100
[<8032ee54>] __platform_driver_register+0x50/0x64
[<8084b094>] sdhci_esdhc_imx_driver_init+0x18/0x20
[<80008980>] do_one_initcall+0x108/0x16c
[<8081cca4>] kernel_init_freeable+0x10c/0x1d0
[<80611c50>] kernel_init+0x10/0x120
[<8000e9c8>] ret_from_fork+0x14/0x2c
IN-SOFTIRQ-W at:
[<8005f030>] mark_lock+0x140/0x6ac
[<80060204>] __lock_acquire+0x5d4/0x1cbc
[<800620d0>] lock_acquire+0x70/0x84
[<8061d40c>] _raw_spin_lock_irqsave+0x40/0x54
[<8045e4a4>] sdhci_tasklet_finish+0x1c/0x120
[<8002b538>] tasklet_action+0xa0/0x15c
[<8002b778>] __do_softirq+0x118/0x290
[<8002bcf4>] irq_exit+0xb4/0x10c
[<8000f240>] handle_IRQ+0x5c/0xbc
[<8000864c>] gic_handle_irq+0x30/0x64
[<80013024>] __irq_svc+0x44/0x5c
[<80614c58>] printk+0x38/0x40
[<804622a8>] sdhci_add_host+0x844/0xbcc
[<80464948>] sdhci_esdhc_imx_probe+0x378/0x67c
[<8032ee88>] platform_drv_probe+0x20/0x50
[<8032d48c>] driver_probe_device+0x118/0x234
[<8032d690>] __driver_attach+0x9c/0xa0
[<8032b89c>] bus_for_each_dev+0x68/0x9c
[<8032cf44>] driver_attach+0x20/0x28
[<8032cbc8>] bus_add_driver+0x148/0x1f4
[<8032dce0>] driver_register+0x80/0x100
[<8032ee54>] __platform_driver_register+0x50/0x64
[<8084b094>] sdhci_esdhc_imx_driver_init+0x18/0x20
[<80008980>] do_one_initcall+0x108/0x16c
[<8081cca4>] kernel_init_freeable+0x10c/0x1d0
[<80611c50>] kernel_init+0x10/0x120
[<8000e9c8>] ret_from_fork+0x14/0x2c
INITIAL USE at:
[<8005f030>] mark_lock+0x140/0x6ac
[<8005ff0c>] __lock_acquire+0x2dc/0x1cbc
[<800620d0>] lock_acquire+0x70/0x84
[<8061d40c>] _raw_spin_lock_irqsave+0x40/0x54
[<804611f4>] sdhci_do_set_ios+0x20/0x720
[<80461924>] sdhci_set_ios+0x30/0x3c
[<8044cea0>] mmc_power_up+0x6c/0xd0
[<8044dac4>] mmc_start_host+0x60/0x70
[<8044eb3c>] mmc_add_host+0x60/0x88
[<8046225c>] sdhci_add_host+0x7f8/0xbcc
[<80464948>] sdhci_esdhc_imx_probe+0x378/0x67c
[<8032ee88>] platform_drv_probe+0x20/0x50
[<8032d48c>] driver_probe_device+0x118/0x234
[<8032d690>] __driver_attach+0x9c/0xa0
[<8032b89c>] bus_for_each_dev+0x68/0x9c
[<8032cf44>] driver_attach+0x20/0x28
[<8032cbc8>] bus_add_driver+0x148/0x1f4
[<8032dce0>] driver_register+0x80/0x100
[<8032ee54>] __platform_driver_register+0x50/0x64
[<8084b094>] sdhci_esdhc_imx_driver_init+0x18/0x20
[<80008980>] do_one_initcall+0x108/0x16c
[<8081cca4>] kernel_init_freeable+0x10c/0x1d0
[<80611c50>] kernel_init+0x10/0x120
[<8000e9c8>] ret_from_fork+0x14/0x2c
}
... key at: [<80e040e8>] __key.26952+0x0/0x8
... acquired at:
[<8005eb60>] check_usage+0x3d0/0x5c0
[<8005edac>] check_irq_usage+0x5c/0xb8
[<80060d38>] __lock_acquire+0x1108/0x1cbc
[<800620d0>] lock_acquire+0x70/0x84
[<8061a210>] mutex_lock_nested+0x54/0x3c0
[<80480b08>] clk_prepare_lock+0x44/0xe4
[<8048188c>] clk_get_rate+0x14/0x64
[<8046374c>] esdhc_pltfm_set_clock+0x20/0x2a4
[<8045d70c>] sdhci_set_clock+0x4c/0x498
[<80461518>] sdhci_do_set_ios+0x344/0x720
[<80461924>] sdhci_set_ios+0x30/0x3c
[<8044c390>] __mmc_set_clock+0x44/0x60
[<8044cd4c>] mmc_set_clock+0x10/0x14
[<8044f8f4>] mmc_init_card+0x1b4/0x1520
[<80450f00>] mmc_attach_mmc+0xb4/0x194
[<8044da08>] mmc_rescan+0x294/0x2f0
[<8003db94>] process_one_work+0x1a4/0x468
[<8003e850>] worker_thread+0x118/0x3e0
[<80044de0>] kthread+0xd4/0xf0
[<8000e9c8>] ret_from_fork+0x14/0x2c
the dependencies between the lock to be acquired and HARDIRQ-irq-unsafe lock:
-> (prepare_lock){+.+...} ops: 395 {
HARDIRQ-ON-W at:
[<8005f030>] mark_lock+0x140/0x6ac
[<8005f604>] mark_held_locks+0x68/0x12c
[<8005f780>] trace_hardirqs_on_caller+0xb8/0x1d8
[<8005f8b4>] trace_hardirqs_on+0x14/0x18
[<8061a130>] mutex_trylock+0x180/0x20c
[<80480ad8>] clk_prepare_lock+0x14/0xe4
[<804816a4>] clk_notifier_register+0x28/0xf0
[<80015120>] twd_clk_init+0x50/0x68
[<80008980>] do_one_initcall+0x108/0x16c
[<8081cca4>] kernel_init_freeable+0x10c/0x1d0
[<80611c50>] kernel_init+0x10/0x120
[<8000e9c8>] ret_from_fork+0x14/0x2c
SOFTIRQ-ON-W at:
[<8005f030>] mark_lock+0x140/0x6ac
[<8005f604>] mark_held_locks+0x68/0x12c
[<8005f7c8>] trace_hardirqs_on_caller+0x100/0x1d8
[<8005f8b4>] trace_hardirqs_on+0x14/0x18
[<8061a130>] mutex_trylock+0x180/0x20c
[<80480ad8>] clk_prepare_lock+0x14/0xe4
[<804816a4>] clk_notifier_register+0x28/0xf0
[<80015120>] twd_clk_init+0x50/0x68
[<80008980>] do_one_initcall+0x108/0x16c
[<8081cca4>] kernel_init_freeable+0x10c/0x1d0
[<80611c50>] kernel_init+0x10/0x120
[<8000e9c8>] ret_from_fork+0x14/0x2c
INITIAL USE at:
[<8005f030>] mark_lock+0x140/0x6ac
[<8005ff0c>] __lock_acquire+0x2dc/0x1cbc
[<800620d0>] lock_acquire+0x70/0x84
[<8061a0c8>] mutex_trylock+0x118/0x20c
[<80480ad8>] clk_prepare_lock+0x14/0xe4
[<80482af8>] __clk_init+0x1c/0x45c
[<8048306c>] _clk_register+0xd0/0x170
[<80483148>] clk_register+0x3c/0x7c
[<80483b4c>] clk_register_fixed_rate+0x88/0xd8
[<80483c04>] of_fixed_clk_setup+0x68/0x94
[<8084c6fc>] of_clk_init+0x44/0x68
[<808202b0>] time_init+0x2c/0x38
[<8081ca14>] start_kernel+0x1e4/0x368
[<10008074>] 0x10008074
}
... key at: [<808afebc>] prepare_lock+0x38/0x48
... acquired at:
[<8005eb94>] check_usage+0x404/0x5c0
[<8005edac>] check_irq_usage+0x5c/0xb8
[<80060d38>] __lock_acquire+0x1108/0x1cbc
[<800620d0>] lock_acquire+0x70/0x84
[<8061a210>] mutex_lock_nested+0x54/0x3c0
[<80480b08>] clk_prepare_lock+0x44/0xe4
[<8048188c>] clk_get_rate+0x14/0x64
[<8046374c>] esdhc_pltfm_set_clock+0x20/0x2a4
[<8045d70c>] sdhci_set_clock+0x4c/0x498
[<80461518>] sdhci_do_set_ios+0x344/0x720
[<80461924>] sdhci_set_ios+0x30/0x3c
[<8044c390>] __mmc_set_clock+0x44/0x60
[<8044cd4c>] mmc_set_clock+0x10/0x14
[<8044f8f4>] mmc_init_card+0x1b4/0x1520
[<80450f00>] mmc_attach_mmc+0xb4/0x194
[<8044da08>] mmc_rescan+0x294/0x2f0
[<8003db94>] process_one_work+0x1a4/0x468
[<8003e850>] worker_thread+0x118/0x3e0
[<80044de0>] kthread+0xd4/0xf0
[<8000e9c8>] ret_from_fork+0x14/0x2c
stack backtrace:
CPU: 2 PID: 29 Comm: kworker/u8:1 Not tainted 3.13.0-rc1+ #285
Workqueue: kmmcd mmc_rescan
Backtrace:
[<80012160>] (dump_backtrace+0x0/0x10c) from [<80012438>] (show_stack+0x18/0x1c)
r6:00000000 r5:00000000 r4:8088ecc8 r3:bfa11200
[<80012420>] (show_stack+0x0/0x1c) from [<80616b14>] (dump_stack+0x84/0x9c)
[<80616a90>] (dump_stack+0x0/0x9c) from [<8005ebb4>] (check_usage+0x424/0x5c0)
r5:80979940 r4:bfa29b44
[<8005e790>] (check_usage+0x0/0x5c0) from [<8005edac>] (check_irq_usage+0x5c/0xb8)
[<8005ed50>] (check_irq_usage+0x0/0xb8) from [<80060d38>] (__lock_acquire+0x1108/0x1cbc)
r8:bfa115e8 r7:80df9884 r6:80dafa9c r5:00000003 r4:bfa115d0
[<8005fc30>] (__lock_acquire+0x0/0x1cbc) from [<800620d0>] (lock_acquire+0x70/0x84)
[<80062060>] (lock_acquire+0x0/0x84) from [<8061a210>] (mutex_lock_nested+0x54/0x3c0)
r7:bfa11200 r6:80dafa9c r5:00000000 r4:80480b08
[<8061a1bc>] (mutex_lock_nested+0x0/0x3c0) from [<80480b08>] (clk_prepare_lock+0x44/0xe4)
[<80480ac4>] (clk_prepare_lock+0x0/0xe4) from [<8048188c>] (clk_get_rate+0x14/0x64)
r6:03197500 r5:bf0e9aa8 r4:bf827400 r3:808ae128
[<80481878>] (clk_get_rate+0x0/0x64) from [<8046374c>] (esdhc_pltfm_set_clock+0x20/0x2a4)
r5:bf0e9aa8 r4:bf0e9c40
[<8046372c>] (esdhc_pltfm_set_clock+0x0/0x2a4) from [<8045d70c>] (sdhci_set_clock+0x4c/0x498)
[<8045d6c0>] (sdhci_set_clock+0x0/0x498) from [<80461518>] (sdhci_do_set_ios+0x344/0x720)
r8:0000003b r7:20000113 r6:bf0e9d68 r5:bf0e9aa8 r4:bf0e9c40
r3:00000000
[<804611d4>] (sdhci_do_set_ios+0x0/0x720) from [<80461924>] (sdhci_set_ios+0x30/0x3c)
r9:00000004 r8:bf131000 r7:bf131048 r6:00000000 r5:bf0e9aa8
r4:bf0e9800
[<804618f4>] (sdhci_set_ios+0x0/0x3c) from [<8044c390>] (__mmc_set_clock+0x44/0x60)
r5:03197500 r4:bf0e9800
[<8044c34c>] (__mmc_set_clock+0x0/0x60) from [<8044cd4c>] (mmc_set_clock+0x10/0x14)
r5:00000000 r4:bf0e9800
[<8044cd3c>] (mmc_set_clock+0x0/0x14) from [<8044f8f4>] (mmc_init_card+0x1b4/0x1520)
[<8044f740>] (mmc_init_card+0x0/0x1520) from [<80450f00>] (mmc_attach_mmc+0xb4/0x194)
[<80450e4c>] (mmc_attach_mmc+0x0/0x194) from [<8044da08>] (mmc_rescan+0x294/0x2f0)
r5:8065f358 r4:bf0e9af8
[<8044d774>] (mmc_rescan+0x0/0x2f0) from [<8003db94>] (process_one_work+0x1a4/0x468)
r8:00000000 r7:bfa29eb0 r6:bf80dc00 r5:bf0e9af8 r4:bf9e3f00
r3:8044d774
[<8003d9f0>] (process_one_work+0x0/0x468) from [<8003e850>] (worker_thread+0x118/0x3e0)
[<8003e738>] (worker_thread+0x0/0x3e0) from [<80044de0>] (kthread+0xd4/0xf0)
[<80044d0c>] (kthread+0x0/0xf0) from [<8000e9c8>] (ret_from_fork+0x14/0x2c)
r7:00000000 r6:00000000 r5:80044d0c r4:bf9e7f00
Fixes: 0ddf03c mmc: esdhc-imx: parse max-frequency from devicetree
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Philippe De Muyter <phdm@macqel.be>
Cc: stable <stable@vger.kernel.org> # 3.13
Signed-off-by: Chris Ball <chris@printf.net>
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