Power management
- PCI/PM: Enable D3/D3cold by default for most devices
- PCI/PM: Keep parent bridge active when probing device
- PCI/PM: Fix config reg access for D3cold and bridge suspending
- PCI/PM: Add ABI document for sysfs file d3cold_allowed
Core
- PCI: Don't print anything while decoding is disabled
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Merge tag '3.6-pci-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"Power management
- PCI/PM: Enable D3/D3cold by default for most devices
- PCI/PM: Keep parent bridge active when probing device
- PCI/PM: Fix config reg access for D3cold and bridge suspending
- PCI/PM: Add ABI document for sysfs file d3cold_allowed
Core
- PCI: Don't print anything while decoding is disabled"
* tag '3.6-pci-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: Don't print anything while decoding is disabled
PCI/PM: Add ABI document for sysfs file d3cold_allowed
PCI/PM: Fix config reg access for D3cold and bridge suspending
PCI/PM: Keep parent bridge active when probing device
PCI/PM: Enable D3/D3cold by default for most devices
Mostly Renesas and Atmel bugfixes this time, targeting boot and build
problems. A couple of patches for gemini and kirkwood as well. On a
whole nothing very controversial.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC bug fixes from Olof Johansson:
"Mostly Renesas and Atmel bugfixes this time, targeting boot and build
problems. A couple of patches for gemini and kirkwood as well. On a
whole nothing very controversial."
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: gemini: fix the gemini build
ARM: shmobile: armadillo800eva: enable rw rootfs mount
ARM: Kirkwood: Fix 'SZ_1M' undeclared here for db88f6281-bp-setup.c
ARM: shmobile: mackerel: fixup usb module order
ARM: shmobile: armadillo800eva: fixup: sound card detection order
ARM: shmobile: marzen: fixup smsc911x id for regulator
ARM: at91/feature-removal-schedule: delay at91_mci removal
ARM: mach-shmobile: armadillo800eva: Enable power button as wakeup source
ARM: mach-shmobile: armadillo800eva: Fix GPIO buttons descriptions
ARM: at91/dts: remove partial parameter in at91sam9g25ek.dts
ARM: at91/clock: fix PLLA overclock warning
ARM: at91: fix rtc-at91sam9 irq issue due to sparse irq support
ARM: at91: fix system timer irq issue due to sparse irq support
ARM: shmobile: sh73a0: fixup RELOC_BASE of intca_irq_pins_desc
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Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull a hwmon fix from Guenter Roeck:
"One patch, fixing DIV_ROUND_CLOSEST to support negative dividends.
While the changes are not in the drivers/hwmon directory, the problem
primarily affects hwmon drivers, and it makes sense to push the patch
through the hwmon tree."
* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
linux/kernel.h: Fix DIV_ROUND_CLOSEST to support negative dividends
Pull kbuild fixes from Michal Marek:
"These are two fixes that should go into 3.6. The link-vmlinux.sh one
is obvious.
The other one fixes make firmware_install with certain configurations,
where a file in the toplevel firmware tree gets installed first, and
$(INSTALL_FW_PATH)/$$(dir <file>) results in /lib/firmware/./, which
confuses make 3.82 for some reason."
* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
firmware: fix directory creation rule matching with make 3.82
link-vmlinux.sh: Fix stray "echo" in error message
- a firmware bug on several Samsung MoviNAND eMMC models causes
permanent corruption on the device when secure erase and secure trim
requests are made, so we disable those requests on these eMMC devices.
- atmel-mci: fix a hang with some SD cards by waiting for not-busy flag.
- dw_mmc: low-power mode breaks SDIO interrupts; fix PIO error handling;
fix handling of error interrupts.
- mxs-mmc: fix deadlocks; fix compile error due to dma.h arch change.
- omap: fix broken PIO mode causing memory corruption.
- sdhci-esdhc: fix card detection.
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Merge tag 'mmc-fixes-for-3.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc
Pull MMC fixes from Chris Ball:
- a firmware bug on several Samsung MoviNAND eMMC models causes
permanent corruption on the device when secure erase and secure trim
requests are made, so we disable those requests on these eMMC devices.
- atmel-mci: fix a hang with some SD cards by waiting for not-busy flag.
- dw_mmc: low-power mode breaks SDIO interrupts; fix PIO error handling;
fix handling of error interrupts.
- mxs-mmc: fix deadlocks; fix compile error due to dma.h arch change.
- omap: fix broken PIO mode causing memory corruption.
- sdhci-esdhc: fix card detection.
* tag 'mmc-fixes-for-3.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc:
mmc: omap: fix broken PIO mode
mmc: card: Skip secure erase on MoviNAND; causes unrecoverable corruption.
mmc: dw_mmc: Disable low power mode if SDIO interrupts are used
mmc: dw_mmc: fix error handling in PIO mode
mmc: dw_mmc: correct mishandling error interrupt
mmc: dw_mmc: amend using error interrupt status
mmc: atmel-mci: not busy flag has also to be used for read operations
mmc: sdhci-esdhc: break out early if clock is 0
mmc: mxs-mmc: fix deadlock caused by recursion loop
mmc: mxs-mmc: fix deadlock in SDIO IRQ case
mmc: bfin_sdh: fix dma_desc_array build error
Fix the following compile error on UML.
arch/um/os-Linux/time.c: In function 'deliver_alarm':
arch/um/os-Linux/time.c:117:3: error: too few arguments to function 'alarm_handler'
arch/um/os-Linux/internal.h:1:6: note: declared here
The error was introduced by commit d3c1cfcd ("um: pass siginfo to guest
process") in 3.6-rc1.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
CC: Martin Pärtel <martin.partel@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Allocate a structure not a pointer to it !
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull powerpc fixes from Benjamin Herrenschmidt:
"Here are a few fixes for 3.6 that were piling up while I was away or
busy (I was mostly MIA a week or two before San Diego).
Some fixes from Anton fixing up issues with our relatively new DSCR
control feature, and a few other fixes that are either regressions or
bugs nasty enough to warrant not waiting."
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc: Don't use __put_user() in patch_instruction
powerpc: Make sure IPI handlers see data written by IPI senders
powerpc: Restore correct DSCR in context switch
powerpc: Fix DSCR inheritance in copy_thread()
powerpc: Keep thread.dscr and thread.dscr_inherit in sync
powerpc: Update DSCR on all CPUs when writing sysfs dscr_default
powerpc/powernv: Always go into nap mode when CPU is offline
powerpc: Give hypervisor decrementer interrupts their own handler
powerpc/vphn: Fix arch_update_cpu_topology() return value
- Erroneous debug message from of_get_named_gpio_flags()
- Make sure the MC9S08DZ60 GPIO driver depend on I2C being
compiled in (not module) or allmodconfig breaks.
- Check return value from irq_alloc_descs() in the Emma
Mobile GPIO driver.
- Assign the owner field for the rdc321x driver so the
module won't be removed if it has active GPIOs.
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Merge tag 'gpio-fixes-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"These are some GPIO regression fixes for v3.6:
- Erroneous debug message from of_get_named_gpio_flags()
- Make sure the MC9S08DZ60 GPIO driver depend on I2C being compiled
in (not module) or allmodconfig breaks.
- Check return value from irq_alloc_descs() in the Emma Mobile GPIO
driver.
- Assign the owner field for the rdc321x driver so the module won't
be removed if it has active GPIOs."
* tag 'gpio-fixes-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: rdc321x: Prevent removal of modules exporting active GPIOs
gpio: em: Fix checking return value of irq_alloc_descs
gpio: mc9s08dz60: Fix build error if I2C=m
gpio: Fix debug message in of_get_named_gpio_flags()
There are nothing scaring, contains only small fixes for HD-audio and
USB-audio:
- EPSS regression fix and GPIO fix for HD-audio IDT codecs
- A series of USB-audio regression fixes that are found since 3.5 kernel
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Merge tag 'sound-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"There are nothing scaring, contains only small fixes for HD-audio and
USB-audio:
- EPSS regression fix and GPIO fix for HD-audio IDT codecs
- A series of USB-audio regression fixes that are found since 3.5
kernel"
* tag 'sound-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: snd-usb: fix cross-interface streaming devices
ALSA: snd-usb: fix calls to next_packet_size
ALSA: snd-usb: restore delay information
ALSA: snd-usb: use list_for_each_safe for endpoint resources
ALSA: snd-usb: Fix URB cancellation at stream start
ALSA: hda - Don't trust codec EPSS bit for IDT 92HD83xx & co
ALSA: hda - Avoid unnecessary parameter read for EPSS
ALSA: hda - Do not set GPIOs for speakers on IDT if there are no speakers
- a fix by Paul Cercueil to prevent a possible buffer overflow
- a fix by Bruno Prémont to prevent a rare sleep in invalid context
- a fix by Julia Lawall for a double free in auo_k190x
- a fix by Dan Carpenter to prevent a division by zero in mb862xxfb
- a regression fix by Tomi Valkeinen for the SDI output in OMAP
- a fix by Grazvydas Ignotas to fix the console colors in OMAP
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Merge tag 'fbdev-fixes-for-3.6-1' of git://github.com/schandinat/linux-2.6
Pull fbdev fixes from Florian Tobias Schandinat:
- a fix by Paul Cercueil to prevent a possible buffer overflow
- a fix by Bruno Prémont to prevent a rare sleep in invalid context
- a fix by Julia Lawall for a double free in auo_k190x
- a fix by Dan Carpenter to prevent a division by zero in mb862xxfb
- a regression fix by Tomi Valkeinen for the SDI output in OMAP
- a fix by Grazvydas Ignotas to fix the console colors in OMAP
* tag 'fbdev-fixes-for-3.6-1' of git://github.com/schandinat/linux-2.6:
OMAPFB: fix framebuffer console colors
OMAPDSS: Fix SDI PLL locking
video: mb862xxfb: prevent divide by zero bug
drivers/video/auo_k190x.c: drop kfree of devm_kzalloc's data
fbcon: Fix bit_putcs() call to kmalloc(s, GFP_KERNEL)
fbcon: prevent possible buffer overflow.
'kmem_cache_alloc()' but were freeing it using 'kfree()' in some cases.
Now we fix this by using 'kmem_cache_free()' instead.
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Merge tag 'upstream-3.6-rc5' of git://git.infradead.org/linux-ubi
Pull ubi fix from Artem Bityutskiy:
"A single small fix for memory deallocation: we allocated memory using
'kmem_cache_alloc()' but were freeing it using 'kfree()' in some
cases. Now we fix this by using 'kmem_cache_free()' instead."
* tag 'upstream-3.6-rc5' of git://git.infradead.org/linux-ubi:
UBI: fix a horrible memory deallocation bug
Commit 644595f896 ("compat: Handle COMPAT_USE_64BIT_TIME in
net/socket.c") introduced a bug where the helper functions to take
either a 64-bit or compat time[spec|val] got the arguments in the wrong
order, passing the kernel stack pointer off as a user pointer (and vice
versa).
Because of the user address range check, that in turn then causes an
EFAULT due to the user pointer range checking failing for the kernel
address. Incorrectly resuling in a failed system call for 32-bit
processes with a 64-bit kernel.
On odder architectures like HP-PA (with separate user/kernel address
spaces), it can be used read kernel memory.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
patch_instruction() can be called very early on ppc32, when the kernel
isn't yet running at it's linked address. That can cause the !
is_kernel_addr() test in __put_user() to trip and call might_sleep()
which is very bad at that point during boot.
Use a lower level function instead for now, at least until we get to
rework ppc32 boot process to do the code patching later, like ppc64
does.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
We have been observing hangs, both of KVM guest vcpu tasks and more
generally, where a process that is woken doesn't properly wake up and
continue to run, but instead sticks in TASK_WAKING state. This
happens because the update of rq->wake_list in ttwu_queue_remote()
is not ordered with the update of ipi_message in
smp_muxed_ipi_message_pass(), and the reading of rq->wake_list in
scheduler_ipi() is not ordered with the reading of ipi_message in
smp_ipi_demux(). Thus it is possible for the IPI receiver not to see
the updated rq->wake_list and therefore conclude that there is nothing
for it to do.
In order to make sure that anything done before smp_send_reschedule()
is ordered before anything done in the resulting call to scheduler_ipi(),
this adds barriers in smp_muxed_message_pass() and smp_ipi_demux().
The barrier in smp_muxed_message_pass() is a full barrier to ensure that
there is a full ordering between the smp_send_reschedule() caller and
scheduler_ipi(). In smp_ipi_demux(), we use xchg() rather than
xchg_local() because xchg() includes release and acquire barriers.
Using xchg() rather than xchg_local() makes sense given that
ipi_message is not just accessed locally.
This moves the barrier between setting the message and calling the
cause_ipi() function into the individual cause_ipi implementations.
Most of them -- those that used outb, out_8 or similar -- already had
a full barrier because out_8 etc. include a sync before the MMIO
store. This adds an explicit barrier in the two remaining cases.
These changes made no measurable difference to the speed of IPIs as
measured using a simple ping-pong latency test across two CPUs on
different cores of a POWER7 machine.
The analysis of the reason why processes were not waking up properly
is due to Milton Miller.
Cc: stable@vger.kernel.org # v3.0+
Reported-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
During a context switch we always restore the per thread DSCR value.
If we aren't doing explicit DSCR management
(ie thread.dscr_inherit == 0) and the default DSCR changed while
the process has been sleeping we end up with the wrong value.
Check thread.dscr_inherit and select the default DSCR or per thread
DSCR as required.
This was found with the following test case, when running with
more threads than CPUs (ie forcing context switching):
http://ozlabs.org/~anton/junkcode/dscr_default_test.c
With the four patches applied I can run a combination of all
test cases successfully at the same time:
http://ozlabs.org/~anton/junkcode/dscr_default_test.chttp://ozlabs.org/~anton/junkcode/dscr_explicit_test.chttp://ozlabs.org/~anton/junkcode/dscr_inherit_test.c
Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org> # 3.0+
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
If the default DSCR is non zero we set thread.dscr_inherit in
copy_thread() meaning the new thread and all its children will ignore
future updates to the default DSCR. This is not intended and is
a change in behaviour that a number of our users have hit.
We just need to inherit thread.dscr and thread.dscr_inherit from
the parent which ends up being much simpler.
This was found with the following test case:
http://ozlabs.org/~anton/junkcode/dscr_default_test.c
Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org> # 3.0+
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
When we update the DSCR either via emulation of mtspr(DSCR) or via
a change to dscr_default in sysfs we don't update thread.dscr.
We will eventually update it at context switch time but there is
a period where thread.dscr is incorrect.
If we fork at this point we will copy the old value of thread.dscr
into the child. To avoid this, always keep thread.dscr in sync with
reality.
This issue was found with the following testcase:
http://ozlabs.org/~anton/junkcode/dscr_inherit_test.c
Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org> # 3.0+
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Writing to dscr_default in sysfs doesn't actually change the DSCR -
we rely on a context switch on each CPU to do the work. There is no
guarantee we will get a context switch in a reasonable amount of time
so fire off an IPI to force an immediate change.
This issue was found with the following test case:
http://ozlabs.org/~anton/junkcode/dscr_explicit_test.c
Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org> # 3.0+
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
The CPU hotplug code for the powernv platform currently only puts
offline CPUs into nap mode if the powersave_nap variable is set.
However, HV-style KVM on this platform requires secondary CPU threads
to be offline and in nap mode. Since we know nap mode works just
fine on all POWER7 machines, and the only machines that support the
powernv platform are POWER7 machines, this changes the code to
always put offline CPUs into nap mode, regardless of powersave_nap.
Powersave_nap still controls whether or not CPUs go into nap mode
when idle, as before.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
At the moment the handler for hypervisor decrementer interrupts is
the same as for decrementer interrupts, i.e. timer_interrupt().
This is bogus; if we ever do get a hypervisor decrementer interrupt
it won't have anything to do with the next timer event. In fact
the only time we get hypervisor decrementer interrupts is when one
is left pending on exit from a KVM guest.
When we get a hypervisor decrementer interrupt we don't need to do
anything special to clear it, since they are edge-triggered on the
transition of HDEC from 0 to -1. Thus this adds an empty handler
function for them. We don't need to have them masked when interrupts
are soft-disabled, so we use STD_EXCEPTION_HV instead of
MASKABLE_EXCEPTION_HV.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch_update_cpu_topology() should only return 1 when the topology has
actually changed, and should return 0 otherwise.
This patch fixes a potential bug where rebuild_sched_domains() would
reinitialize the sched domains even when the topology hasn't changed.
Signed-off-by: Jesse Larrew <jlarrew@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Test-compiling obscure machines I notice that the gemini (which
by the way lacks a defconfig) is broken since some time back.
Adding a simple missing include makes it build again.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
Two regression fixes and one boot-loader compatibility fix from Simon Horman.
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: armadillo800eva: enable rw rootfs mount
ARM: shmobile: mackerel: fixup usb module order
ARM: shmobile: armadillo800eva: fixup: sound card detection order
After commit 26b88520b8 ("mmc:
omap_hsmmc: remove private DMA API implementation"), the Nokia N800
here stopped booting:
[ 2.086181] Waiting for root device /dev/mmcblk0p1...
[ 2.324066] Unhandled fault: imprecise external abort (0x406) at 0x00000000
[ 2.331451] Internal error: : 406 [#1] ARM
[ 2.335784] Modules linked in:
[ 2.339050] CPU: 0 Not tainted (3.6.0-rc3 #60)
[ 2.344146] PC is at default_idle+0x28/0x30
[ 2.348602] LR is at trace_hardirqs_on_caller+0x15c/0x1b0
...
This turned out to be due to memory corruption caused by long-broken
PIO code in drivers/mmc/host/omap.c. (Previously, this driver had
been using DMA; but the above commit caused the MMC driver to fall
back to PIO mode with an unmodified Kconfig.)
The PIO code, added with the rest of the driver in commit
730c9b7e66 ("[MMC] Add OMAP MMC host
driver"), confused bytes with 16-bit words. This bug caused memory
located after the PIO transfer buffer to be corrupted with transfers
larger than 32 bytes. The driver also did not increment the buffer
pointer after the transfer occurred. This bug resulted in data
corruption during any transfer larger than 64 bytes.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
For several MoviNAND eMMC parts, there are known issues with secure
erase and secure trim. For these specific MoviNAND devices, we skip
these operations.
Specifically, there is a bug in the eMMC firmware that causes
unrecoverable corruption when the MMC is erased with MMC_CAP_ERASE
enabled.
References:
http://forum.xda-developers.com/showthread.php?t=1644364https://plus.google.com/111398485184813224730/posts/21pTYfTsCkB#111398485184813224730/posts/21pTYfTsCkB
Signed-off-by: Ian Chen <ian.cy.chen@samsung.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: stable <stable@vger.kernel.org> [3.0+]
Signed-off-by: Chris Ball <cjb@laptop.org>
The documentation for the dw_mmc part says that the low power
mode should normally only be set for MMC and SD memory and should
be turned off for SDIO cards that need interrupts detected.
The best place I could find to do this is when the SDIO interrupt
was first enabled. I rely on the fact that dw_mci_setup_bus()
will be called when it's time to reenable.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Data transfer will be continued until all the bytes are transmitted,
even if data crc error occurs during a multiple-block data transfer.
This means RXDR/TXDR interrupts will occurs until data transfer is
terminated. Early setting of host->sg to NULL prevents going into
xxx_data_pio functions, hence permanent unhandled RXDR/TXDR interrupts
occurs. And checking error interrupt status in the xxx_data_pio functions
is no need because dw_mci_interrupt does do the same. This patch also
removes it.
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Datasheet of SYNOPSYS mentions that DTO(Data Transfer Over) interrupt
will be raised even if some error interrupts, however it is actually
found that DTO does not occur. SYNOPSYS has confirmed this issue.
Current implementation defers the call of tasklet_schedule until DTO
when the error interrupts is happened. This patch fixes error handling.
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
RINTSTS status includes masked interrupts as well as unmasked.
data_status and cmd_status are set by value of RINTSTS in interrupt handler
and tasklet finally uses it to decide whether error is happened or not.
In addition, MINTSTS status is used for setting data_status in PIO.
Masked error interrupt will not be handled and that status can be considered
non-error case.
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Reviewed By: Girish K S <girish.shivananjappa@linaro.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Even if the datasheet says that the not busy flag has to be used only
for write operations, it's false except for version lesser than v2xx.
Not waiting on the not busy flag for read operations can cause the
controller to hang-up during the initialization of some SD cards
with DMA after the first CMD6 -- the next command is sent too early.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Cc: stable <stable@vger.kernel.org> [3.5, 3.6]
Signed-off-by: Chris Ball <cjb@laptop.org>
Since commit 30832ab56 ("mmc: sdhci: Always pass clock request value
zero to set_clock host op") was merged, esdhc_set_clock starts hitting
"if (clock == 0)" where ESDHC_SYSTEM_CONTROL has been operated. This
causes SDHCI card-detection function being broken. Fix the regression
by moving "if (clock == 0)" above ESDHC_SYSTEM_CONTROL operation.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
Descriptor array structure has been moved into blackfin dma.h head file.
This patch fix below error:
drivers/mmc/host/bfin_sdh.c:52:8: error: redefinition of 'struct
dma_desc_array'
make[4]: *** [drivers/mmc/host/bfin_sdh.o] Error 1
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
UBI was mistakingly using 'kfree()' instead of 'kmem_cache_free()' when
freeing "attach eraseblock" structures in vtbl.c. Thankfully, this happened
only when we were doing auto-format, so many systems were unaffected. However,
there are still many users affected.
It is strange, but the system did not crash and nothing bad happened when
the SLUB memory allocator was used. However, in case of SLOB we observed an
crash right away.
This problem was introduced in 2.6.39 by commit
"6c1e875 UBI: add slab cache for ubi_scan_leb objects"
A note for stable trees:
Because variable were renamed, this won't cleanly apply to older kernels.
Changing names like this should help:
1. ai -> si
2. aeb_slab_cache -> seb_slab_cache
3. new_aeb -> new_seb
Reported-by: Richard Genoud <richard.genoud@gmail.com>
Tested-by: Richard Genoud <richard.genoud@gmail.com>
Tested-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: stable@vger.kernel.org [v2.6.39+]
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
armadillo800eva default boot loader is "hermit",
and it's tag->u.core.flags has flag when kernel boots.
Because of this, ${LINUX}/arch/arm/kernel/setup.c :: parse_tag_core()
didn't remove MS_RDONLY flag from root_mountflags.
Thus, the rootfs is mounted as "readonly".
This patch adds "rw" kernel parameter,
and enable read/write mounts for rootfs
Cc: Masahiro Nakai <nakai@atmark-techno.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Pull CIFS fixes from Steve French.
* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
CIFS: Fix cifs_do_create error hadnling
cifs: print error code if smb signature verification fails
CIFS: Fix log messages in packet checking for SMB2
CIFS: Protect i_nlink from being negative
Pull networking fixes from David Miller:
1) NLA_PUT* --> nla_put_* conversion got one case wrong in
nfnetlink_log, fix from Patrick McHardy.
2) Missed error return check in ipw2100 driver, from Julia Lawall.
3) PMTU updates in ipv4 were setting the expiry time incorrectly, fix
from Eric Dumazet.
4) SFC driver erroneously reversed src and dst when reporting filters
via ethtool.
5) Memory leak in CAN protocol and wrong setting of IRQF_SHARED in
sja1000 can platform driver, from Alexey Khoroshilov and Sven
Schmitt.
6) Fix multicast traffic scaling regression in ipv4_dst_destroy, only
take the lock when we really need to. From Eric Dumazet.
7) Fix non-root process spoofing in netlink, from Pablo Neira Ayuso.
8) CWND reduction in TCP is done incorrectly during non-SACK recovery,
fix from Yuchung Cheng.
9) Revert netpoll change, and fix what was actually a driver specific
problem. From Amerigo Wang. This should cure bootup hangs with
netconsole some people reported.
10) Fix xen-netfront invoking __skb_fill_page_desc() with a NULL page
pointer. From Ian Campbell.
11) SIP NAT fix for expectiontation creation, from Pablo Neira Ayuso.
12) __ip_rt_update_pmtu() needs RCU locking, from Eric Dumazet.
13) Fix usbnet deadlock on resume, can't use GFP_KERNEL in this
situation. From Oliver Neukum.
14) The davinci ethernet driver triggers an OOPS on removal because it
frees an MDIO object before unregistering it. Fix from Bin Liu.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (41 commits)
net: qmi_wwan: add several new Gobi devices
fddi: 64 bit bug in smt_add_para()
net: ethernet: fix kernel OOPS when remove davinci_mdio module
net/xfrm/xfrm_state.c: fix error return code
net: ipv6: fix error return code
net: qmi_wwan: new device: Foxconn/Novatel E396
usbnet: fix deadlock in resume
cs89x0 : packet reception not working
netfilter: nf_conntrack: fix racy timer handling with reliable events
bnx2x: Correct the ndo_poll_controller call
bnx2x: Move netif_napi_add to the open call
ipv4: must use rcu protection while calling fib_lookup
bnx2x: fix 57840_MF pci id
net: ipv4: ipmr_expire_timer causes crash when removing net namespace
e1000e: DoS while TSO enabled caused by link partner with small MSS
l2tp: avoid to use synchronize_rcu in tunnel free function
gianfar: fix default tx vlan offload feature flag
netfilter: nf_nat_sip: fix incorrect handling of EBUSY for RTCP expectation
xen-netfront: use __pskb_pull_tail to ensure linear area is big enough on RX
netfilter: nfnetlink_log: fix error return code in init path
...
Gobi devices are composite, needing both the qcserial and
qmi_wwan drivers to support all functions. Re-syncing the
list of supported devices with qcserial.
Cc: Aleksander Morgado <aleksander@lanedo.com>
Cc: Thomas Tuttle <ttuttle@chromium.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@tempietto.lan>
The intent was to set 4 bytes of data so that's why the sp_len is set
to 4 on the next line. The cast to u_long pointer clears 8 bytes
on 64 bit arches.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@tempietto.lan>
DIV_ROUND_CLOSEST returns a bad result for negative dividends:
DIV_ROUND_CLOSEST(-2, 2) = 0
Most of the time this does not matter. However, in the hardware monitoring
subsystem, DIV_ROUND_CLOSEST is sometimes used on integers which can be
negative (such as temperatures).
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
Andreas Bombe reported that the added ktime_t overflow checking added to
timespec_valid in commit 4e8b14526c ("time: Improve sanity checking of
timekeeping inputs") was causing problems with X.org because it caused
timeouts larger then KTIME_T to be invalid.
Previously, these large timeouts would be clamped to KTIME_MAX and would
never expire, which is valid.
This patch splits the ktime_t overflow checking into a new
timespec_valid_strict function, and converts the timekeeping codes
internal checking to use this more strict function.
Reported-and-tested-by: Andreas Bombe <aeb@debian.org>
Cc: Zhouping Liu <zliu@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This driver can be built as a module, set the missing owner field of
struct gpio_chip to prevent removal of modules exporting active GPIOs.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This is a set of two bug fixes. One is the ATOMIC problem which is now
causing a compile failure in certain situations. The other is mishandling of
PER_LINUX32 which may also cause user visible effects.
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Merge tag 'parisc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6
Pull PARISC fixes from James Bottomley:
"This is a set of two bug fixes. One is the ATOMIC problem which is
now causing a compile failure in certain situations. The other is
mishandling of PER_LINUX32 which may also cause user visible effects.
Signed-off-by: James Bottomley <JBottomley@Parallels.com>"
* tag 'parisc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6:
[PARISC] fix personality flag check in copy_thread()
[PARISC] Redefine ATOMIC_INIT and ATOMIC64_INIT to drop the casts
