Linus Torvalds [Sat, 18 Feb 2012 23:28:56 +0000 (15:28 -0800)]
Merge tag 'ecryptfs-3.3-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs
Fixes maximum filename length and filesystem type reporting in statfs() calls
and also fixes stale inode mode bits on eCryptfs inodes after a POSIX ACL was
set on the lower filesystem's inode.
* tag 'ecryptfs-3.3-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs:
ecryptfs: remove the second argument of k[un]map_atomic()
eCryptfs: Copy up lower inode attrs after setting lower xattr
eCryptfs: Improve statfs reporting
Linus Torvalds [Sat, 18 Feb 2012 23:26:37 +0000 (15:26 -0800)]
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Here are a few more fixes for powerpc. Some are regressions, the rest
is simple/obvious/nasty enough that I deemed it good to go now.
Here's also step one of deprecating legacy iSeries support: we are
removing it from the main defconfig.
Nobody seems to be using it anymore and the code is nasty to maintain,
(involves horrible hacks in various low level areas of the kernel) so we
plan to actually rip it out at some point. For now let's just avoid
building it by default. Stephen will proceed to do the actual removal
later (probably 3.4 or 3.5).
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/perf: power_pmu_start restores incorrect values, breaking frequency events
powerpc/adb: Use set_current_state()
powerpc: Disable interrupts early in Program Check
powerpc: Remove legacy iSeries from ppc64_defconfig
powerpc/fsl/pci: Fix PCIe fixup regression
powerpc: Fix kernel log of oops/panic instruction dump
Linus Torvalds [Sat, 18 Feb 2012 23:26:11 +0000 (15:26 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci
One regression fix for SR-IOV on PPC and a couple of misc fixes from
Yinghai.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci:
PCI: Fix pci cardbus removal
PCI: set pci sriov page size before reading SRIOV BAR
PCI: workaround hard-wired bus number V2
Linus Torvalds [Sat, 18 Feb 2012 23:25:39 +0000 (15:25 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
3 radeon fixes, I have some exynos fixes to push later but I'll queue
them separately once I've looked them over a bit.
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/radeon/kms: fix MSI re-arm on rv370+
drm/radeon/kms/atom: bios scratch reg handling updates
drm/radeon/kms: drop lock in return path of radeon_fence_count_emitted.
Linus Torvalds [Sat, 18 Feb 2012 20:56:35 +0000 (12:56 -0800)]
i387: re-introduce FPU state preloading at context switch time
After all the FPU state cleanups and finally finding the problem that
caused all our FPU save/restore problems, this re-introduces the
preloading of FPU state that was removed in commit b3b0870ef3ff ("i387:
do not preload FPU state at task switch time").
However, instead of simply reverting the removal, this reimplements
preloading with several fixes, most notably
- properly abstracted as a true FPU state switch, rather than as
open-coded save and restore with various hacks.
In particular, implementing it as a proper FPU state switch allows us
to optimize the CR0.TS flag accesses: there is no reason to set the
TS bit only to then almost immediately clear it again. CR0 accesses
are quite slow and expensive, don't flip the bit back and forth for
no good reason.
- Make sure that the same model works for both x86-32 and x86-64, so
that there are no gratuitous differences between the two due to the
way they save and restore segment state differently due to
architectural differences that really don't matter to the FPU state.
- Avoid exposing the "preload" state to the context switch routines,
and in particular allow the concept of lazy state restore: if nothing
else has used the FPU in the meantime, and the process is still on
the same CPU, we can avoid restoring state from memory entirely, just
re-expose the state that is still in the FPU unit.
That optimized lazy restore isn't actually implemented here, but the
infrastructure is set up for it. Of course, older CPU's that use
'fnsave' to save the state cannot take advantage of this, since the
state saving also trashes the state.
In other words, there is now an actual _design_ to the FPU state saving,
rather than just random historical baggage. Hopefully it's easier to
follow as a result.
Linus Torvalds [Sat, 18 Feb 2012 05:48:54 +0000 (21:48 -0800)]
i387: move TS_USEDFPU flag from thread_info to task_struct
This moves the bit that indicates whether a thread has ownership of the
FPU from the TS_USEDFPU bit in thread_info->status to a word of its own
(called 'has_fpu') in task_struct->thread.has_fpu.
This fixes two independent bugs at the same time:
- changing 'thread_info->status' from the scheduler causes nasty
problems for the other users of that variable, since it is defined to
be thread-synchronous (that's what the "TS_" part of the naming was
supposed to indicate).
So perfectly valid code could (and did) do
ti->status |= TS_RESTORE_SIGMASK;
and the compiler was free to do that as separate load, or and store
instructions. Which can cause problems with preemption, since a task
switch could happen in between, and change the TS_USEDFPU bit. The
change to TS_USEDFPU would be overwritten by the final store.
In practice, this seldom happened, though, because the 'status' field
was seldom used more than once, so gcc would generally tend to
generate code that used a read-modify-write instruction and thus
happened to avoid this problem - RMW instructions are naturally low
fat and preemption-safe.
- On x86-32, the current_thread_info() pointer would, during interrupts
and softirqs, point to a *copy* of the real thread_info, because
x86-32 uses %esp to calculate the thread_info address, and thus the
separate irq (and softirq) stacks would cause these kinds of odd
thread_info copy aliases.
This is normally not a problem, since interrupts aren't supposed to
look at thread information anyway (what thread is running at
interrupt time really isn't very well-defined), but it confused the
heck out of irq_fpu_usable() and the code that tried to squirrel
away the FPU state.
(It also caused untold confusion for us poor kernel developers).
It also turns out that using 'task_struct' is actually much more natural
for most of the call sites that care about the FPU state, since they
tend to work with the task struct for other reasons anyway (ie
scheduling). And the FPU data that we are going to save/restore is
found there too.
Thanks to Arjan Van De Ven <arjan@linux.intel.com> for pointing us to
the %esp issue.
Cc: Arjan van de Ven <arjan@linux.intel.com> Reported-and-tested-by: Raphael Prevost <raphael@buro.asia> Acked-and-tested-by: Suresh Siddha <suresh.b.siddha@intel.com> Tested-by: Peter Anvin <hpa@zytor.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 17 Feb 2012 03:11:15 +0000 (19:11 -0800)]
i387: move AMD K7/K8 fpu fxsave/fxrstor workaround from save to restore
The AMD K7/K8 CPUs don't save/restore FDP/FIP/FOP unless an exception is
pending. In order to not leak FIP state from one process to another, we
need to do a floating point load after the fxsave of the old process,
and before the fxrstor of the new FPU state. That resets the state to
the (uninteresting) kernel load, rather than some potentially sensitive
user information.
We used to do this directly after the FPU state save, but that is
actually very inconvenient, since it
(a) corrupts what is potentially perfectly good FPU state that we might
want to lazy avoid restoring later and
(b) on x86-64 it resulted in a very annoying ordering constraint, where
"__unlazy_fpu()" in the task switch needs to be delayed until after
the DS segment has been reloaded just to get the new DS value.
Coupling it to the fxrstor instead of the fxsave automatically avoids
both of these issues, and also ensures that we only do it when actually
necessary (the FP state after a save may never actually get used). It's
simply a much more natural place for the leaked state cleanup.
Linus Torvalds [Thu, 16 Feb 2012 23:45:23 +0000 (15:45 -0800)]
i387: do not preload FPU state at task switch time
Yes, taking the trap to re-load the FPU/MMX state is expensive, but so
is spending several days looking for a bug in the state save/restore
code. And the preload code has some rather subtle interactions with
both paravirtualization support and segment state restore, so it's not
nearly as simple as it should be.
Also, now that we no longer necessarily depend on a single bit (ie
TS_USEDFPU) for keeping track of the state of the FPU, we migth be able
to do better. If we are really switching between two processes that
keep touching the FP state, save/restore is inevitable, but in the case
of having one process that does most of the FPU usage, we may actually
be able to do much better than the preloading.
In particular, we may be able to keep track of which CPU the process ran
on last, and also per CPU keep track of which process' FP state that CPU
has. For modern CPU's that don't destroy the FPU contents on save time,
that would allow us to do a lazy restore by just re-enabling the
existing FPU state - with no restore cost at all!
Tyler Hicks [Tue, 7 Feb 2012 23:55:40 +0000 (17:55 -0600)]
eCryptfs: Copy up lower inode attrs after setting lower xattr
After passing through a ->setxattr() call, eCryptfs needs to copy the
inode attributes from the lower inode to the eCryptfs inode, as they
may have changed in the lower filesystem's ->setxattr() path.
One example is if an extended attribute containing a POSIX Access
Control List is being set. The new ACL may cause the lower filesystem to
modify the mode of the lower inode and the eCryptfs inode would need to
be updated to reflect the new mode.
Tyler Hicks [Sat, 5 Nov 2011 17:45:08 +0000 (13:45 -0400)]
eCryptfs: Improve statfs reporting
statfs() calls on eCryptfs files returned the wrong filesystem type and,
when using filename encryption, the wrong maximum filename length.
If mount-wide filename encryption is enabled, the cipher block size and
the lower filesystem's max filename length will determine the max
eCryptfs filename length. Pre-tested, known good lengths are used when
the lower filesystem's namelen is 255 and a cipher with 8 or 16 byte
block sizes is used. In other, less common cases, we fall back to a safe
rounded-down estimate when determining the eCryptfs namelen.
Linus Torvalds [Thu, 16 Feb 2012 21:33:12 +0000 (13:33 -0800)]
i387: don't ever touch TS_USEDFPU directly, use helper functions
This creates three helper functions that do the TS_USEDFPU accesses, and
makes everybody that used to do it by hand use those helpers instead.
In addition, there's a couple of helper functions for the "change both
CR0.TS and TS_USEDFPU at the same time" case, and the places that do
that together have been changed to use those. That means that we have
fewer random places that open-code this situation.
The intent is partly to clarify the code without actually changing any
semantics yet (since we clearly still have some hard to reproduce bug in
this area), but also to make it much easier to use another approach
entirely to caching the CR0.TS bit for software accesses.
Right now we use a bit in the thread-info 'status' variable (this patch
does not change that), but we might want to make it a full field of its
own or even make it a per-cpu variable.
Linus Torvalds [Thu, 16 Feb 2012 20:22:48 +0000 (12:22 -0800)]
i387: move TS_USEDFPU clearing out of __save_init_fpu and into callers
Touching TS_USEDFPU without touching CR0.TS is confusing, so don't do
it. By moving it into the callers, we always do the TS_USEDFPU next to
the CR0.TS accesses in the source code, and it's much easier to see how
the two go hand in hand.
Linus Torvalds [Thu, 16 Feb 2012 17:15:04 +0000 (09:15 -0800)]
i387: fix x86-64 preemption-unsafe user stack save/restore
Commit 5b1cbac37798 ("i387: make irq_fpu_usable() tests more robust")
added a sanity check to the #NM handler to verify that we never cause
the "Device Not Available" exception in kernel mode.
However, that check actually pinpointed a (fundamental) race where we do
cause that exception as part of the signal stack FPU state save/restore
code.
Because we use the floating point instructions themselves to save and
restore state directly from user mode, we cannot do that atomically with
testing the TS_USEDFPU bit: the user mode access itself may cause a page
fault, which causes a task switch, which saves and restores the FP/MMX
state from the kernel buffers.
This kind of "recursive" FP state save is fine per se, but it means that
when the signal stack save/restore gets restarted, it will now take the
'#NM' exception we originally tried to avoid. With preemption this can
happen even without the page fault - but because of the user access, we
cannot just disable preemption around the save/restore instruction.
There are various ways to solve this, including using the
"enable/disable_page_fault()" helpers to not allow page faults at all
during the sequence, and fall back to copying things by hand without the
use of the native FP state save/restore instructions.
However, the simplest thing to do is to just allow the #NM from kernel
space, but fix the race in setting and clearing CR0.TS that this all
exposed: the TS bit changes and the TS_USEDFPU bit absolutely have to be
atomic wrt scheduling, so while the actual state save/restore can be
interrupted and restarted, the act of actually clearing/setting CR0.TS
and the TS_USEDFPU bit together must not.
Instead of just adding random "preempt_disable/enable()" calls to what
is already excessively ugly code, this introduces some helper functions
that mostly mirror the "kernel_fpu_begin/end()" functionality, just for
the user state instead.
Those helper functions should probably eventually replace the other
ad-hoc CR0.TS and TS_USEDFPU tests too, but I'll need to think about it
some more: the task switching functionality in particular needs to
expose the difference between the 'prev' and 'next' threads, while the
new helper functions intentionally were written to only work with
'current'.
Anton Blanchard [Wed, 15 Feb 2012 18:48:22 +0000 (18:48 +0000)]
powerpc/perf: power_pmu_start restores incorrect values, breaking frequency events
perf on POWER stopped working after commit e050e3f0a71b (perf: Fix
broken interrupt rate throttling). That patch exposed a bug in
the POWER perf_events code.
Since the PMCs count upwards and take an exception when the top bit
is set, we want to write 0x80000000 - left in power_pmu_start. We were
instead programming in left which effectively disables the counter
until we eventually hit 0x80000000. This could take seconds or longer.
With the patch applied I get the expected number of samples:
SAMPLE events: 9948
Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: <stable@kernel.org>
powerpc: Disable interrupts early in Program Check
Program Check exceptions are the result of WARNs, BUGs, some
type of breakpoints, kprobe, and other illegal instructions.
We want interrupts (and thus preemption) to remain disabled
while doing the initial stage of testing the reason and
branching off to a debugger or kprobe, so we are still on
the original CPU which makes debugging easier in various cases.
This is how the code was intended, hence the local_irq_enable()
right in the middle of program_check_exception().
However, the assembly exception prologue for that exception was
incorrectly marked as enabling interrupts, which defeats that
(and records a redundant enable with lockdep).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Upstream changes to the way PHB resources are registered
broke the resource fixup for FSL boards.
We can no longer rely on the resource pointer array for the PHB's
pci_bus structure, so let's leave it alone and go straight for
the PHB resources instead. This also makes the code generally
more readable.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Ira Snyder [Fri, 6 Jan 2012 12:34:07 +0000 (12:34 +0000)]
powerpc: Fix kernel log of oops/panic instruction dump
A kernel oops/panic prints an instruction dump showing several
instructions before and after the instruction which caused the
oops/panic.
The code intended that the faulting instruction be enclosed in angle
brackets, however a bug caused the faulting instruction to be
interpreted by printk() as the message log level.
To fix this, the KERN_CONT log level is added before the actual text of
the printed message.
Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Alexey Dobriyan [Sat, 14 Jan 2012 18:44:49 +0000 (21:44 +0300)]
crypto: sha512 - use standard ror64()
Use standard ror64() instead of hand-written.
There is no standard ror64, so create it.
The difference is shift value being "unsigned int" instead of uint64_t
(for which there is no reason). gcc starts to emit native ROR instructions
which it doesn't do for some reason currently. This should make the code
faster.
Patch survives in-tree crypto test and ping flood with hmac(sha512) on.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Linus Torvalds [Wed, 15 Feb 2012 16:05:18 +0000 (08:05 -0800)]
i387: fix sense of sanity check
The check for save_init_fpu() (introduced in commit 5b1cbac37798: "i387:
make irq_fpu_usable() tests more robust") was the wrong way around, but
I hadn't noticed, because my "tests" were bogus: the FPU exceptions are
disabled by default, so even doing a divide by zero never actually
triggers this code at all unless you do extra work to enable them.
So if anybody did enable them, they'd get one spurious warning.
Linus Torvalds [Tue, 14 Feb 2012 23:26:42 +0000 (15:26 -0800)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
One small bug fix from Axel plus a fix for a build failure in unrealistic
but commonly built configs which for some reason manage to survive for
an awfully long time in -next without any reports.
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: Fix getting voltage in max8649_enable_time()
regulator: Fix mc13xxx regulator modular build (again)
Linus Torvalds [Tue, 14 Feb 2012 23:21:25 +0000 (15:21 -0800)]
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Quoth BenH:
"Here are a few powerpc fixes for 3.3, all pretty trivial. I also
added the patch to define GET_IP/SET_IP so we can use some more
asm-generic goodness."
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/pseries/eeh: Fix crash when error happens during device probe
powerpc/pseries: Fix partition migration hang in stop_topology_update
powerpc/powernv: Disable interrupts while taking phb->lock
powerpc: Fix WARN_ON in decrementer_check_overflow
powerpc/wsp: Fix IRQ affinity setting
powerpc: Implement GET_IP/SET_IP
powerpc/wsp: Permanently enable PCI class code workaround
Linus Torvalds [Tue, 14 Feb 2012 23:20:50 +0000 (15:20 -0800)]
Merge tag 'mmc-fixes-for-3.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc
MMC fixes for 3.3-rc4:
* The most visible fix here is against a regression introduced in 3.3-rc1
that ran cards in Ultra High Speed mode even when they failed to initialize
in that mode, leading to lower-speed cards failing to mount.
* A lockdep warning introduced in 3.3-rc1 is fixed.
* Various other small driver fixes, most notably for a NULL dereference
when using highmem with dw_mmc.
* tag 'mmc-fixes-for-3.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc:
mmc: dw_mmc: Fix PIO mode with support of highmem
mmc: atmel-mci: save and restore sdioirq when soft reset is performed
mmc: block: Init ro_lock sysfs attr to fix lockdep warnings
mmc: sh_mmcif: fix late delayed work initialisation
mmc: tmio_mmc: fix card eject during IO with DMA
mmc: core: Fix comparison issue in mmc_compare_ext_csds
mmc: core: Fix PowerOff Notify suspend/resume
mmc: sdhci-pci: set Medfield SDIO as non-removable
mmc: core: add the capability for broken voltage
mmc: core: Fix low speed mmc card detection failure
mmc: esdhc: set the timeout to the max value
mmc: esdhc: add PIO mode support
mmc: core: Ensure clocks are always enabled before host interaction
mmc: of_mmc_spi: fix little endian support
mmc: core: UHS sdio card that fails should not exceed 50MHz
mmc: esdhc: fix errors when booting kernel on Freescale eSDHC version 2.3
Linus Torvalds [Tue, 14 Feb 2012 23:20:11 +0000 (15:20 -0800)]
Merge tag 'stable/for-linus-fixes-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
Two fixes for VCPU offlining; One to fix the string format exposed
by the xen-pci[front|back] to conform to the one used in majority of
PCI drivers; Two fixes to make the code more resilient to invalid
configurations.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* tag 'stable/for-linus-fixes-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xenbus_dev: add missing error check to watch handling
xen/pci[front|back]: Use %d instead of %1x for displaying PCI devfn.
xen pvhvm: do not remap pirqs onto evtchns if !xen_have_vector_callback
xen/smp: Fix CPU online/offline bug triggering a BUG: scheduling while atomic.
xen/bootup: During bootup suppress XENBUS: Unable to read cpu state
Linus Torvalds [Tue, 14 Feb 2012 17:09:24 +0000 (09:09 -0800)]
Merge tag 'sound-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
sound fixes for 3.3-rc4
Basically all small fixes suited as rc4: a few HD-audio regression fixes,
a stable fix for an old Dell laptop with intel8x0, and a simple fix for
ASoC fsi.
* tag 'sound-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: intel8x0: Fix default inaudible sound on Gateway M520
ALSA: hda - Fix silent speaker output on Acer Aspire 6935
ALSA: hda - Fix initialization of secondary capture source on VT1705
ASoC: fsi: fixup fsi_pointer() calculation method
ALSA: hda - Fix mute-LED VREF value for new HP laptops
Dave Airlie [Mon, 13 Feb 2012 12:18:37 +0000 (12:18 +0000)]
drm/radeon/kms: drop lock in return path of radeon_fence_count_emitted.
Silly bad return path.
Reported-and-Tested-by: Mikko Vinni Reviewed-by: Alex Deucher <alexander.deucher@amd.com> CC: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
Daniel T Chen [Tue, 14 Feb 2012 04:44:22 +0000 (23:44 -0500)]
ALSA: intel8x0: Fix default inaudible sound on Gateway M520
BugLink: https://bugs.launchpad.net/bugs/930842
The reporter states that audio is inaudible by default without muting
'External Amplifier'. Add a quirk to handle his SSID so that changing
the control is not necessary.
Reported-and-tested-by: Benjamin Carlson <elderbubba0810@gmail.com> Cc: <stable@kernel.org> Signed-off-by: Daniel T Chen <crimsun@ubuntu.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Linus Torvalds [Tue, 14 Feb 2012 04:34:44 +0000 (20:34 -0800)]
Merge git://git.samba.org/sfrench/cifs-2.6
* git://git.samba.org/sfrench/cifs-2.6:
cifs: don't return error from standard_receive3 after marking response malformed
cifs: request oplock when doing open on lookup
cifs: fix error handling when cifscreds key payload is an error
This updates the sha512 fix so that it doesn't cause excessive stack
usage on i386. This is done by reverting to the original code, and
avoiding the W duplication by moving its initialisation into the loop.
As the underlying code is in fact the one that we have used for years,
I'm pushing this now instead of postponing to the next cycle.
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: sha512 - Avoid stack bloat on i386
crypto: sha512 - Use binary and instead of modulus
powerpc/pseries/eeh: Fix crash when error happens during device probe
EEH may happen during a PCI driver probe. If the driver is trying to
access some register in a loop, the EEH code will try to print the
driver name. But the driver pointer in struct pci_dev is not set until
probe returns successfully.
Use a function to test if the device and the driver pointer is NULL
before accessing the driver's name.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Brian King [Wed, 11 Jan 2012 06:56:04 +0000 (06:56 +0000)]
powerpc/pseries: Fix partition migration hang in stop_topology_update
This fixes a hang that was observed during live partition migration.
Since stop_topology_update must not be called from an interrupt
context, call it earlier in the migration process. The hang observed
can be seen below:
powerpc: Fix WARN_ON in decrementer_check_overflow
We use __get_cpu_var() which triggers a false positive warning
in smp_processor_id() thinking interrupts are enabled (at this
point, they are soft-enabled but hard-disabled).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
We call the cache_hwirq_map() function with a linux IRQ number
but it expects a HW irq number. This triggers a BUG on multic-chip
setups in addition to not doing the right thing.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
powerpc/wsp: Permanently enable PCI class code workaround
It appears that on the Chroma card, the class code of the root
complex is still wrong even on DD2 or later chips. This could
be a firmware issue, but that breaks resource allocation so let's
unconditionally fix it up.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Acked-by: Will Newton <will.newton@imgtec.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Chris Ball <cjb@laptop.org>
mmc: atmel-mci: save and restore sdioirq when soft reset is performed
Sometimes a software reset is needed. Then some registers are saved and
restored but the interrupt mask register is missing. It causes issues
with sdio devices whose interrupts are masked after reset.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
mmc: sh_mmcif: fix late delayed work initialisation
If the driver is loaded with a card in the slot, mmc_add_host() will
schedule an immediate card-detection work, which will start IO and wait
for command completion. Usually the kernel first returns to the sh_mmcif
probe function, lets it finish and only then schedules the rescan work.
But sometimes, expecially under heavy system load, the work will be
scheduled immediately before returning to the probe method. In this case
it is important for the driver to be fully prepared for IO. For sh_mmcif
this means, that also the timeout work has to be initialised before
calling mmc_add_host(). It is also better to prepare interrupts
beforehand. Besides, since mmc_add_host() does card-detection itself,
there is no need to do it again immediately afterwards.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
When DMA is in use and the card is ejected during IO, DMA transfers have to
be terminated, otherwise the dmaengine driver fails to operate properly,
when the card is re-inserted.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
Jurgen Heeks [Wed, 1 Feb 2012 12:30:55 +0000 (13:30 +0100)]
mmc: core: Fix comparison issue in mmc_compare_ext_csds
Found this issue during code review. Actually, there are two issues which
both compensate together in lucky case. In unlucky case the bus width
probing might not work as expected.
Girish K S [Tue, 31 Jan 2012 10:14:03 +0000 (15:44 +0530)]
mmc: core: Fix PowerOff Notify suspend/resume
Modified the mmc_poweroff to resume before sending the poweroff
notification command. In sleep mode only AWAKE and RESET commands are
allowed, so before sending the poweroff notification command resume from
sleep mode and then send the notification command.
PowerOff Notify is tested on a Synopsis Designware Host Controller
(eMMC 4.5). The suspend to RAM and resume works fine.
Signed-off-by: Girish K S <girish.shivananjappa@linaro.org> Tested-by: Girish K S <girish.shivananjappa@linaro.org> Reviewed-by: Saugata Das <saugata.das@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
Jaehoon Chung [Mon, 16 Jan 2012 08:49:01 +0000 (17:49 +0900)]
mmc: core: add the capability for broken voltage
There is an understood mismatch between the voltage the host controller is
set to and the voltage supplied to the card by a fixed voltage regulator.
Teaching the driver to accept the mismatch is overly complicated. Instead
just accept the regulator's voltage.
This patch adds MMC_CAP2_BROKEN_VOLTAGE.
If the voltage didn't satisfy between min_uV and max_uV, try to change
the voltage in core.c. When changing the voltage, maybe use
regulator_set_voltage().
In regulator_set_voltage(), check the below condition.
/* sanity check */
if (!rdev->desc->ops->set_voltage &&
!rdev->desc->ops->set_voltage_sel) {
ret = -EINVAL;
goto out;
}
If some board should use the fixed-regulator, always return -EINVAL.
Then, eMMC didn't initialize always.
So if use a fixed-regulator, we need to add the MMC_CAP2_BROKEN_VOLTAGE.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Jerry Huang [Mon, 16 Jan 2012 06:13:04 +0000 (14:13 +0800)]
mmc: esdhc: set the timeout to the max value
When accessing the card on some FSL platform boards (e.g p2020, p1010,
mpc8536), the following error is reported with the timeout value calculated:
mmc0: Got data interrupt 0x00000020 even though no data operation was
in progress.
mmc0: Got data interrupt 0x00000020 even though no data operation was
in progress.
So we skip the calculation of timeout and use the max value to fix it.
Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com> Signed-off-by: Gao Guanhua <B22826@freescale.com> Signed-off-by: Xie Xiaobo <X.Xie@freescale.com> Acked-by: Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Jerry Huang [Mon, 16 Jan 2012 06:13:03 +0000 (14:13 +0800)]
mmc: esdhc: add PIO mode support
For some FSL ESDHC controllers (e.g. P2020E, Rev1.0), the SDHC can not
work on DMA mode because of the hardware bug, so we set a broken dma flag
and use PIO mode.
Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com> Signed-off-by: Gao Guanhua <B22826@freescale.com> Acked-by: Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
mmc: core: Ensure clocks are always enabled before host interaction
Ensure clocks are always enabled before any interaction with the
host controller driver. This makes sure that there is no race
between host execution and the core layer turning off clocks
in different context with clock gating framework.
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Per Forlin <per.forlin@stericsson.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Philip Rakity [Thu, 26 Jan 2012 14:57:10 +0000 (06:57 -0800)]
mmc: core: UHS sdio card that fails should not exceed 50MHz
A UHS sdio card that fails initialization at 1.8v signaling is not in
UHS mode. We cannot use the speed in the the cis to reflect the bus
speed as this is the maxiumum value and will not reflect the fact
that the host is operating at a lower (non uhs) bus speed.
Signed-off-by: Philip Rakity <prakity@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Reviewed-by: Aaron Lu <aaron.lu@amd.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Linus Torvalds [Tue, 14 Feb 2012 00:59:53 +0000 (16:59 -0800)]
Merge tag 'for-linus' of git://github.com/rustyrussell/linux
* tag 'for-linus' of git://github.com/rustyrussell/linux:
module: fix broken isapnp handling in file2alias
module: make module param bint handle nul value
Linus Torvalds [Mon, 13 Feb 2012 22:20:43 +0000 (14:20 -0800)]
Merge tag 'battery-fixes-for-v3.3-rc2' of git://git.infradead.org/users/cbou/battery-urgent
Just a few small fixes for a bunch of drivers. Nothing noteworthy.
* tag 'battery-fixes-for-v3.3-rc2' of git://git.infradead.org/users/cbou/battery-urgent:
lp8727_charger: Add terminating entry for i2c_device_id table
power_supply: Fix modalias for charger-manager
lp8727_chager: Fix permissions on a header file
bq27x00_battery: Fix flag register read
Revert "bq27x00_battery: Fix reporting status value for bq27500 battery"
Linus Torvalds [Mon, 13 Feb 2012 22:19:45 +0000 (14:19 -0800)]
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
Two bugfixes in XFS for 3.3: one fix passes KMEM_SLEEP to kmem_realloc
instead of 0, and the other resolves a possible deadlock in xfs quotas.
* 'for-linus' of git://oss.sgi.com/xfs/xfs:
xfs: use a normal shrinker for the dquot freelist
xfs: pass KM_SLEEP flag to kmem_realloc() in xlog_recover_add_to_cnt_trans()
Linus Torvalds [Mon, 13 Feb 2012 22:16:07 +0000 (14:16 -0800)]
Merge branch 'omap-fixes-warnings' of git://git.linaro.org/people/rmk/linux-arm
This set of changes are fixing various section mismatch warnings which
look to be completely valid. Primerily, those which are fixed are those
which can cause oopses by manipulation of driver binding via sysfs. For
example: calling code marked __init from driver probe __devinit
functions.
Some of these changes will be reworked at the next merge window when the
underlying reasons are sorted out. In the mean time, I think it's
important to have this fixed for correctness.
Also included in this set are fixes to various error messages in OMAP -
including making them gramatically correct, fixing a few spelling
errors, and more importantly, making them greppable by unwrapping them.
Tony Lindgren has acked all these patches, put them out for testing a
week ago, and I've tested them on the platforms I have.
Linus Torvalds [Mon, 13 Feb 2012 22:15:22 +0000 (14:15 -0800)]
Merge branch 'omap-fixes-urgent' of git://git.linaro.org/people/rmk/linux-arm
This pull request covers the major oopsing issues with OMAP, caused by
the lack of the TWL driver. Even when the TWL driver is not built in,
we shouldn't oops.
* 'omap-fixes-urgent' of git://git.linaro.org/people/rmk/linux-arm:
ARM: omap: fix broken twl-core dependencies and ifdefs
ARM: omap: fix oops in drivers/video/omap2/dss/dpi.c
ARM: omap: fix oops in arch/arm/mach-omap2/vp.c when pmic is not found
Linus Torvalds [Mon, 13 Feb 2012 21:56:14 +0000 (13:56 -0800)]
i387: make irq_fpu_usable() tests more robust
Some code - especially the crypto layer - wants to use the x86
FP/MMX/AVX register set in what may be interrupt (typically softirq)
context.
That *can* be ok, but the tests for when it was ok were somewhat
suspect. We cannot touch the thread-specific status bits either, so
we'd better check that we're not going to try to save FP state or
anything like that.
Now, it may be that the TS bit is always cleared *before* we set the
USEDFPU bit (and only set when we had already cleared the USEDFP
before), so the TS bit test may actually have been sufficient, but it
certainly was not obviously so.
So this explicitly verifies that we will not touch the TS_USEDFPU bit,
and adds a few related sanity-checks. Because it seems that somehow
AES-NI is corrupting user FP state. The cause is not clear, and this
patch doesn't fix it, but while debugging it I really wanted the code to
be more obviously correct and robust.
Since 3.2 kernel, the driver starts trying to assign the multi-io DACs
before the speaker, thus it assigns DAC2/3 for multi-io and DAC4 for
the speaker for a standard laptop setup like a HP, a speaker, a mic-in
and a line-in. However, on Acer Aspire 6935, it seems that the
speaker pin 0x14 must be connected with either DAC1 or 2; otherwise it
results in silence by some reason, although the codec itself allows
the routing to DAC3/4.
As a workaround, the connection list of each pin is reduced to be
mapped to either only DAC1/2 or DAC3/4, so that the compatible
assignment as in kernel 3.1 is achieved.
Takashi Iwai [Mon, 13 Feb 2012 14:04:06 +0000 (15:04 +0100)]
ALSA: hda - Fix initialization of secondary capture source on VT1705
VT1705 codec has two ADCs where the secondary ADC has no MUX but only
a fixed connection to the mic pin. This confused the driver and it
tries always overriding the input-source selection by assumption of
the existing MUX for the secondary ADC, resulted in resetting the
input-source at each time PM (including power-saving) occurs.
The fix is simply to check the existence of MUX for secondary ADCs in
the initialization code.
It's useful to print the error code when a called function fails so a
diagnosis of why it failed is possible. In this case, it fails because
we try to register some data for the wl12xx driver, but as the driver
is not configured, a stub function is used which simply returns -ENOSYS.
Let's do the simple thing for -rc and print the error code.
Also, the return code from platform_register_device() at each of these
sites was not being checked. Add some checking, and again print the
error code.
This should be fixed properly for the next merge window so we don't
issue error messages merely because a driver is not configured.
Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Tue, 7 Feb 2012 10:51:39 +0000 (10:51 +0000)]
ARM: omap: fix section mismatch warnings in mux.c caused by hsmmc.c
The previous commit causes new section mismatch warnings:
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdb30): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_gpio()
The function omap_init_hsmmc() references
the function __init omap_mux_init_gpio().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_gpio is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdb4c): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_gpio()
The function omap_init_hsmmc() references
the function __init omap_mux_init_gpio().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_gpio is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdb60): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdb6c): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdb78): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdb90): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdb9c): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdba8): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdbc0): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdbcc): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdbd8): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdbf8): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdc04): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdc10): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdc28): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdc34): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdc40): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdc58): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdc64): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdc70): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xdc7c): Section mismatch in reference from the function omap_init_hsmmc() to the function .init.text:omap_mux_init_signal()
The function omap_init_hsmmc() references
the function __init omap_mux_init_signal().
This is often because omap_init_hsmmc lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
Again, as for omap2_hsmmc_init(), these functions are callable at
runtime via the gpio-twl4030.c driver, and so these can't be marked
__init.
Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Tue, 7 Feb 2012 10:45:50 +0000 (10:45 +0000)]
ARM: omap: fix section mismatch warning for sdp3430_twl_gpio_setup()
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xd0f0): Section mismatch in reference from the function sdp3430_twl_gpio_setup() to the function .init.text:omap2_hsmmc_init()
The function sdp3430_twl_gpio_setup() references
the function __init omap2_hsmmc_init().
This is often because sdp3430_twl_gpio_setup lacks a __init
annotation or the annotation of omap2_hsmmc_init is wrong.
sdp3430_twl_gpio_setup() is called via platform data from the
gpio-twl4030 module, which can be inserted and removed at runtime.
This makes sdp3430_twl_gpio_setup() callable at runtime, and prevents
it being marked with an __init annotation.
As it calls omap2_hsmmc_init() unconditionally, the only resolution to
this warning is to remove the __init markings from omap2_hsmmc_init()
and its called functions. This addresses the functions in hsmmc.c.
Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Tue, 7 Feb 2012 10:41:34 +0000 (10:41 +0000)]
ARM: omap: fix section mismatch error for omap_4430sdp_display_init()
WARNING: arch/arm/mach-omap2/built-in.o(.text+0xb798): Section mismatch in reference from the function omap_4430sdp_display_init() to the function .init.text:omap_display_init()
The function omap_4430sdp_display_init() references
the function __init omap_display_init().
This is often because omap_4430sdp_display_init lacks a __init
annotation or the annotation of omap_display_init is wrong.
Fix this by adding __init to omap_4430sdp_display_init().
Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Tue, 7 Feb 2012 10:34:01 +0000 (10:34 +0000)]
ARM: omap: fix section mismatch warning for omap_secondary_startup()
WARNING: vmlinux.o(.text+0x1c664): Section mismatch in reference from the function omap_secondary_startup() to the function .cpuinit.text:secondary_startup()
The function omap_secondary_startup() references
the function __cpuinit secondary_startup().
This is often because omap_secondary_startup lacks a __cpuinit
annotation or the annotation of secondary_startup is wrong.
Unfortunately, fixing this causes a new warning which is harder to
solve:
WARNING: arch/arm/mach-omap2/built-in.o(.text+0x5328): Section mismatch in reference from the function omap4_hotplug_cpu() to the function .cpuinit.text:omap_secondary_startup()
The function omap4_hotplug_cpu() references
the function __cpuinit omap_secondary_startup().
This is often because omap4_hotplug_cpu lacks a __cpuinit
annotation or the annotation of omap_secondary_startup is wrong.
because omap4_hotplug_cpu() is used by power management code as well,
which may not end up using omap_secondary_startup().
Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Tue, 7 Feb 2012 11:07:24 +0000 (11:07 +0000)]
ARM: omap: preemptively fix section mismatch in omap4_sdp4430_wifi_mux_init()
Found by review.
omap4_sdp4430_wifi_mux_init() is called by an __init marked function,
and only calls omap_mux_init_gpio() and omap_mux_init_signal() which
are both also an __init marked functions.
The only reason this doesn't issue a warning is because the compiler
inlines omap4_sdp4430_wifi_mux_init() into omap4_sdp4430_wifi_init().
So, lets add the __init annotation to ensure this remains safe should
the compiler choose not to inline.
Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Tue, 7 Feb 2012 10:18:34 +0000 (10:18 +0000)]
ARM: omap: fix section mismatch warning in mux.c
WARNING: arch/arm/mach-omap2/built-in.o(.text+0x15a4): Section mismatch in reference from the function omap_mux_init_signals() to the function .init.text:omap_mux_init_signal()
The function omap_mux_init_signals() references
the function __init omap_mux_init_signal().
This is often because omap_mux_init_signals lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Tue, 7 Feb 2012 10:00:34 +0000 (10:00 +0000)]
ARM: omap: fix section mismatch errors in TWL PMIC driver
WARNING: drivers/mfd/built-in.o(.devinit.text+0x258): Section mismatch in reference from the function twl_probe() to the function .init.text:twl4030_power_init()
The function __devinit twl_probe() references
a function __init twl4030_power_init().
If twl4030_power_init is only used by twl_probe then
annotate twl4030_power_init with a matching annotation.
twl4030_power_init() references other __init marked functions, so
these too must become __devinit.
Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
On my OMAP4 platform, I'm getting this error message repeated several
times at boot:
omap_vc_i2c_init: I2C config for all channels must match.
omap_vc_i2c_init: I2C config for all channels must match.
This doesn't help identify what the problem is. Fix this message to
be more informative:
omap_vc_i2c_init: I2C config for vdd_iva does not match other channels (0).
omap_vc_i2c_init: I2C config for vdd_mpu does not match other channels (0).
This allows us to identify which voltage domains have a problem, and
what the I2C configuration state (a boolean, i2c_high_speed) setting
being used actually is.
From this we find that omap4_core_pmic has i2c_high_speed false, but
omap4_iva_pmic and omap4_mpu_pmic both have it set true.
Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Tue, 7 Feb 2012 10:13:02 +0000 (10:13 +0000)]
ARM: omap: fix vc.c PMIC error message
While testing on my OMAP3430 platform, this error message was emitted:
omap_vc_init_channel: PMIC info requried to configure vc forvdd_core not populated.Hence cannot initialize vc
Trying to find this message was difficult because it was wrapped across
several lines. It also mis-spells "required", doesn't read very well,
and has spaces lacking. Let's replace it with a more concise:
omap_vc_init_channel: No PMIC info for vdd_core
While we're here, fix a simple spelling error in a comment.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
It is because eSDHC controller has different bit setting for PROCTL
register at 0x28 comparing SD specification.
This patch sets DMAS bits correctly for byte operation and does not
change the default value of other field of PROCTL register.
For other FSL chips, such as MPC8536/P2020, PROCTL[DMAS]
bits are reserved and even if they are set to wrong bits, it will not
take effective.
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com> Acked-by: Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Linus Torvalds [Sat, 11 Feb 2012 18:07:11 +0000 (10:07 -0800)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Says Jens:
"Time to push off some of the pending items. I really wanted to wait
until we had the regression nailed, but alas it's not quite there yet.
But I'm very confident that it's "just" a missing expire on exit, so
fix from Tejun should be fairly trivial. I'm headed out for a week on
the slopes.
- Killing the barrier part of mtip32xx. It doesn't really support
barriers, and it doesn't need them (writes are fully ordered).
- A few fixes from Dan Carpenter, preventing overflows of integer
multiplication.
- A fixup for loop, fixing a previous commit that didn't quite solve
the partial read problem from Dave Young.
- A bio integer overflow fix from Kent Overstreet.
- Improvement/fix of the door "keep locked" part of the cdrom shared
code from Paolo Benzini.
- A few cfq fixes from Shaohua Li.
- A fix for bsg sysfs warning when removing a file it did not create
from Stanislaw Gruszka.
- Two fixes for floppy from Vivek, preventing a crash.
- A few block core fixes from Tejun. One killing the over-optimized
ioc exit path, cleaning that up nicely. Two others fixing an oops
on elevator switch, due to calling into the scheduler merge check
code without holding the queue lock."
* 'for-linus' of git://git.kernel.dk/linux-block:
block: fix lockdep warning on io_context release put_io_context()
relay: prevent integer overflow in relay_open()
loop: zero fill bio instead of return -EIO for partial read
bio: don't overflow in bio_get_nr_vecs()
floppy: Fix a crash during rmmod
floppy: Cleanup disk->queue before caling put_disk() if add_disk() was never called
cdrom: move shared static to cdrom_device_info
bsg: fix sysfs link remove warning
block: don't call elevator callbacks for plug merges
block: separate out blk_rq_merge_ok() and blk_try_merge() from elevator functions
mtip32xx: removed the irrelevant argument of mtip_hw_submit_io() and the unused member of struct driver_data
block: strip out locking optimization in put_io_context()
cdrom: use copy_to_user() without the underscores
block: fix ioc locking warning
block: fix NULL icq_cache reference
block,cfq: change code order
Tejun Heo [Sat, 11 Feb 2012 11:37:25 +0000 (12:37 +0100)]
block: fix lockdep warning on io_context release put_io_context()
11a3122f6c "block: strip out locking optimization in put_io_context()"
removed ioc_lock depth lockdep annoation along with locking
optimization; however, while recursing from put_io_context() is no
longer possible, ioc_release_fn() may still end up putting the last
reference of another ioc through elevator, which wlil grab ioc->lock
triggering spurious (as the ioc is always different one) A-A deadlock
warning.
As this can only happen one time from ioc_release_fn(), using non-zero
subclass from ioc_release_fn() is enough. Use subclass 1.
1) GRO MAC header comparisons were ethernet specific, breaking other
link types. This required a multi-faceted fix to cure the originally
noted case (Infiniband), because IPoIB was lying about it's actual
hard header length. Thanks to Eric Dumazet, Roland Dreier, and
others.
2) Fix build failure when INET_UDP_DIAG is built in and ipv6 is modular.
From Anisse Astier.
3) Off by ones and other bug fixes in netprio_cgroup from Neil Horman.
4) ipv4 TCP reset generation needs to respect any network interface
binding from the socket, otherwise route lookups might give a
different result than all the other segments received. From Shawn
Lu.
5) Fix unintended regression in ipv4 proxy ARP responses, from Thomas
Graf.
6) Fix SKB under-allocation bug in sh_eth, from Yoshihiro Shimoda.
7) Revert skge PCI mapping changes that are causing crashes for some
folks, from Stephen Hemminger.
8) IPV4 route lookups fill in the wildcarded fields of the given flow
lookup key passed in, which is fine most of the time as this is
exactly what the caller's want. However there are a few cases that
want to retain the original flow key values afterwards, so handle
those cases properly. Fix from Julian Anastasov.
9) IGB/IXGBE VF lookup bug fixes from Greg Rose.
10) Properly null terminate filename passed to ethtool flash device
method, from Ben Hutchings.
11) S3 resume fix in via-velocity from David Lv.
12) Fix double SKB free during xmit failure in CAIF, from Dmitry
Tarnyagin.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (72 commits)
net: Don't proxy arp respond if iif == rt->dst.dev if private VLAN is disabled
ipv4: Fix wrong order of ip_rt_get_source() and update iph->daddr.
netprio_cgroup: fix wrong memory access when NETPRIO_CGROUP=m
netprio_cgroup: don't allocate prio table when a device is registered
netprio_cgroup: fix an off-by-one bug
bna: fix error handling of bnad_get_flash_partition_by_offset()
isdn: type bug in isdn_net_header()
net: Make qdisc_skb_cb upper size bound explicit.
ixgbe: ethtool: stats user buffer overrun
ixgbe: dcb: up2tc mapping lost on disable/enable CEE DCB state
ixgbe: do not update real num queues when netdev is going away
ixgbe: Fix broken dependency on MAX_SKB_FRAGS being related to page size
ixgbe: Fix case of Tx Hang in PF with 32 VFs
ixgbe: fix vf lookup
igb: fix vf lookup
e1000: add dropped DMA receive enable back in for WoL
gro: more generic L2 header check
IPoIB: Stop lying about hard_header_len and use skb->cb to stash LL addresses
zd1211rw: firmware needs duration_id set to zero for non-pspoll frames
net: enable TC35815 for MIPS again
...
Yinghai Lu [Sun, 5 Feb 2012 06:55:00 +0000 (22:55 -0800)]
PCI: Fix pci cardbus removal
During test busn_res allocation with cardbus, found pci card removal is not
working anymore, and it turns out it is broken by:
|commit 79cc9601c3e42b4f0650fe7e69132ebce7ab48f9
|Date: Tue Nov 22 21:06:53 2011 -0800
|
| PCI: Only call pci_stop_bus_device() one time for child devices at remove
The above changed the behavior of pci_remove_behind_bridge that
yenta_cardbus depended on. So restore the old behavoir of
pci_remove_behind_bridge (which requires stopping and removing of all
devices) by:
1. rename pci_remove_behind_bridge to __pci_remove_behind_bridge, and let
__pci_remove_bus_device() call it instead.
2. add pci_stop_behind_bridge that will stop devices behind a bridge
3. add back pci_remove_behind_bridge that will stop and remove devices
under bridge.
Thomas Graf [Fri, 10 Feb 2012 04:07:11 +0000 (04:07 +0000)]
net: Don't proxy arp respond if iif == rt->dst.dev if private VLAN is disabled
Commit 653241 (net: RFC3069, private VLAN proxy arp support) changed
the behavior of arp proxy to send arp replies back out on the interface
the request came in even if the private VLAN feature is disabled.
Previously we checked rt->dst.dev != skb->dev for in scenarios, when
proxy arp is enabled on for the netdevice and also when individual proxy
neighbour entries have been added.
This patch adds the check back for the pneigh_lookup() scenario.
Signed-off-by: Thomas Graf <tgraf@suug.ch> Acked-by: Jesper Dangaard Brouer <hawk@comx.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
Li Wei [Thu, 9 Feb 2012 21:15:25 +0000 (21:15 +0000)]
ipv4: Fix wrong order of ip_rt_get_source() and update iph->daddr.
This patch fix a bug which introduced by commit ac8a4810 (ipv4: Save
nexthop address of LSRR/SSRR option to IPCB.).In that patch, we saved
the nexthop of SRR in ip_option->nexthop and update iph->daddr until
we get to ip_forward_options(), but we need to update it before
ip_rt_get_source(), otherwise we may get a wrong src.
Signed-off-by: Li Wei <lw@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Neil Horman [Fri, 10 Feb 2012 05:43:38 +0000 (05:43 +0000)]
netprio_cgroup: fix wrong memory access when NETPRIO_CGROUP=m
When the netprio_cgroup module is not loaded, net_prio_subsys_id
is -1, and so sock_update_prioidx() accesses cgroup_subsys array
with negative index subsys[-1].
Make the code resembles cls_cgroup code, which is bug free.
Origionally-authored-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Neil Horman <nhorman@tuxdriver.com> CC: "David S. Miller" <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Neil Horman [Fri, 10 Feb 2012 05:43:37 +0000 (05:43 +0000)]
netprio_cgroup: don't allocate prio table when a device is registered
So we delay the allocation till the priority is set through cgroup,
and this makes skb_update_priority() faster when it's not set.
This also eliminates an off-by-one bug similar with the one fixed
in the previous patch.
Origionally-authored-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Neil Horman <nhorman@tuxdriver.com> CC: "David S. Miller" <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
We got weired output, because we exceeded the boundary of the array.
We may even crash the kernel..
Origionally-authored-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Neil Horman <nhorman@tuxdriver.com> CC: "David S. Miller" <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
PCI: set pci sriov page size before reading SRIOV BAR
For an SRIOV device, PCI_SRIOV_SYS_PGSIZE should be set before
the PCI_SRIOV_BAR are queried. The sys pagesize defaults to 4k,
so this change is required on powerpc box with 64k base page size.
This is a regression caused due to moving SRIOV init to sriov_enable().
| PCI: delay configuration of SRIOV capability
| The SRIOV capability, namely page size and total_vfs of a device are
| configured during enumeration phase of the device. This can potentially
| interfere with the PCI operations of the platform, if the IOV capability
| of the device is not enabled.
Yinghai Lu [Mon, 30 Jan 2012 11:25:24 +0000 (12:25 +0100)]
PCI: workaround hard-wired bus number V2
Fixes PCI device detection on IBM xSeries IBM 3850 M2 / x3950 M2
when using ACPI resources (_CRS).
This is default, a manual workaround (without this patch)
would be pci=nocrs boot param.
V2: Add dev_warn if the workaround is hit. This should reveal
how common such setups are (via google) and point to possible
problems if things are still not working as expected.
-> Suggested by Jan Beulich.
Stop reusing dquots from the freelist when allocating new ones directly, and
implement a shrinker that actually follows the specifications for the
interface. The shrinker implementation is still highly suboptimal at this
point, but we can gradually work on it.
This also fixes an bug in the previous lock ordering, where we would take
the hash and dqlist locks inside of the freelist lock against the normal
lock ordering. This is only solvable by introducing the dispose list,
and thus not when using direct reclaim of unused dquots for new allocations.
As a side-effect the quota upper bound and used to free ratio values in
/proc/fs/xfs/xqm are set to 0 as these values don't make any sense in the
new world order.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ben Myers <bpm@sgi.com>
Linus Torvalds [Fri, 10 Feb 2012 17:06:25 +0000 (09:06 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/i915: fixup interlaced bits clearing in PIPECONF on PCH_SPLIT (v2)
drm/i915: no lvds quirk for AOpen MP45
drm/i915: Force explicit bpp selection for intel_dp_link_required
drm/radeon: do not continue after error from r600_ib_test
drivers/gpu/drm/drm_ioc32.c: initialize all fields
drm/i915: fixup interlaced bits clearing in PIPECONF on PCH_SPLIT
drm/i915:: Disable FBC on SandyBridge
Linus Torvalds [Fri, 10 Feb 2012 17:05:52 +0000 (09:05 -0800)]
Merge tag 'writeback-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux
fix 1 mysterious divide error
fix 3 NULL dereference bugs in writeback tracing, on SD card removal w/o umount
* tag 'writeback-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux:
writeback: fix dereferencing NULL bdi->dev on trace_writeback_queue
lib: proportion: lower PROP_MAX_SHIFT to 32 on 64-bit kernel
writeback: fix NULL bdi->dev in trace writeback_single_inode
backing-dev: fix wakeup timer races with bdi_unregister()
Linus Torvalds [Fri, 10 Feb 2012 17:05:07 +0000 (09:05 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Fix double start/stop in x86_pmu_start()
perf evsel: Fix an issue where perf report fails to show the proper percentage
perf tools: Fix prefix matching for kernel maps
perf tools: Fix perf stack to non executable on x86_64
perf: Remove deprecated WARN_ON_ONCE()
Linus Torvalds [Fri, 10 Feb 2012 17:04:37 +0000 (09:04 -0800)]
Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Couple of regressions, couple of zero-day bugs, a minor enhancement.
Nothing really major.
* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (f75375s) Let f75375_update_device treat pwmX as a measured value
hwmon: (f75375s) Fix bit shifting in f75375_write16
hwmon: (f75375s) Fix reading of wrong register when initializing the F75387
hwmon: (f75375s) Fix automatic pwm mode setting for F75373 & F75375
hwmon: (w83627ehf) Remove duplicate code
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