23 Sep, 2014
1 commit
-
tmp103 temperature sensor driver registers with the hwmon framework by calling
hwmon_device_register_with_groups but does not have a .remove method to call
hwmon_device_unregister to unregister from the framework when the device is no
longer needed. Fix this by calling devm_hwmon_device_register_with_groups.Signed-off-by: Sundar J Dev
Signed-off-by: Guenter Roeck
17 Sep, 2014
2 commits
-
Fam16h,M30h(Mullins) and Fam15hM30h(Kaveri) processors can
report 'power_crit' value. So, adding their respective device ids.Signed-off-by: Aravind Gopalakrishnan
Signed-off-by: Guenter Roeck -
power1_input should only be reported for Fam15h, Models 00h-0fh
So, introduce a is_visible function to take care of this.As suggested by Guenter here:
http://marc.info/?l=linux-kernel&m=141038145616437&w=2Suggested-by: Guenter Roeck
Fixes: 22e32f4f5777 ('x86,AMD: Power driver support for AMD's family 16h processors')
Signed-off-by: Aravind Gopalakrishnan
Signed-off-by: Guenter Roeck
15 Sep, 2014
8 commits
-
Pull vfs fixes from Al Viro:
"double iput() on failure exit in lustre, racy removal of spliced
dentries from ->s_anon in __d_materialise_dentry() plus a bunch of
assorted RCU pathwalk fixes"The RCU pathwalk fixes end up fixing a couple of cases where we
incorrectly dropped out of RCU walking, due to incorrect initialization
and testing of the sequence locks in some corner cases. Since dropping
out of RCU walk mode forces the slow locked accesses, those corner cases
slowed down quite dramatically.* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
be careful with nd->inode in path_init() and follow_dotdot_rcu()
don't bugger nd->seq on set_root_rcu() from follow_dotdot_rcu()
fix bogus read_seqretry() checks introduced in b37199e
move the call of __d_drop(anon) into __d_materialise_unique(dentry, anon)
[fix] lustre: d_make_root() does iput() on dentry allocation failure -
The performance regression that Josef Bacik reported in the pathname
lookup (see commit 99d263d4c5b2 "vfs: fix bad hashing of dentries") made
me look at performance stability of the dcache code, just to verify that
the problem was actually fixed. That turned up a few other problems in
this area.There are a few cases where we exit RCU lookup mode and go to the slow
serializing case when we shouldn't, Al has fixed those and they'll come
in with the next VFS pull.But my performance verification also shows that link_path_walk() turns
out to have a very unfortunate 32-bit store of the length and hash of
the name we look up, followed by a 64-bit read of the combined hash_len
field. That screws up the processor store to load forwarding, causing
an unnecessary hickup in this critical routine.It's caused by the ugly calling convention for the "hash_name()"
function, and easily fixed by just making hash_name() fill in the whole
'struct qstr' rather than passing it a pointer to just the hash value.With that, the profile for this function looks much smoother.
Signed-off-by: Linus Torvalds
-
Pull parisc updates from Helge Deller:
"The most important patch is a new Light Weigth Syscall (LWS) for 8,
16, 32 and 64 bit atomic CAS operations which is required in order to
be able to implement the atomic gcc builtins on our platform.Other than that, we wire up the seccomp, getrandom and memfd_create
syscalls, fixes a minor off-by-one bug and a wrong printk string"* 'parisc-3.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Implement new LWS CAS supporting 64 bit operations.
parisc: Wire up seccomp, getrandom and memfd_create syscalls
parisc: dino: fix %d confusingly prefixed with 0x in format string
parisc: sys_hpux: NUL terminator is one past the end -
in the former we simply check if dentry is still valid after picking
its ->d_inode; in the latter we fetch ->d_inode in the same places
where we fetch dentry and its ->d_seq, under the same checks.Cc: stable@vger.kernel.org # 2.6.38+
Signed-off-by: Al Viro -
return the value instead, and have path_init() do the assignment. Broken by
"vfs: Fix absolute RCU path walk failures due to uninitialized seq number",
which was Cc-stable with 2.6.38+ as destination. This one should go where
it went.To avoid dummy value returned in case when root is already set (it would do
no harm, actually, since the only caller that doesn't ignore the return value
is guaranteed to have nd->root *not* set, but it's more obvious that way),
lift the check into callers. And do the same to set_root(), to keep them
in sync.Cc: stable@vger.kernel.org # 2.6.38+
Signed-off-by: Al Viro -
Pull ntb driver bugfixes from Jon Mason:
"NTB driver fixes for queue spread and buffer alignment. Also, update
to MAINTAINERS to reflect new e-mail address"* tag 'ntb-3.17' of git://github.com/jonmason/ntb:
ntb: Add alignment check to meet hardware requirement
MAINTAINERS: update NTB info
NTB: correct the spread of queues over mw's -
Pull ARM irq chip fixes from Thomas Gleixner:
"Another pile of ARM specific irq chip fixlets:- off by one bugs in the crossbar driver
- missing annotations
- a bunch of "make it compile" updatesI pulled the lot today from Jason, but it has been in -next for at
least a week"* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip: gic-v3: Declare rdist as __percpu pointer to __iomem pointer
irqchip: gic: Make gic_default_routable_irq_domain_ops static
irqchip: exynos-combiner: Fix compilation error on ARM64
irqchip: crossbar: Off by one bugs in init
irqchip: gic-v3: Tag all low level accessors __maybe_unused
irqchip: gic-v3: Only define gic_peek_irq() when building SMP
14 Sep, 2014
14 commits
-
irqchip fixes for v3.17 from Jason Cooper
- GIC/GICV3: Various fixlets
- crossbar: Fix off-by-one bug
- exynos-combiner: Fix arm64 build error -
The NTB translate register must have the value to be BAR size aligned.
This alignment check make sure that the DMA memory allocated has the
proper alignment. Another requirement for NTB to function properly with
memory window BAR size greater or equal to 4M is to use the CMA feature
in 3.16 kernel with the appropriate CONFIG_CMA_ALIGNMENT and
CONFIG_CMA_SIZE_MBYTES set.Signed-off-by: Dave Jiang
Signed-off-by: Jon Mason -
Update my contact info to my personal email address and add Dave Jiang.
Signed-off-by: Jon Mason
Signed-off-by: Dave Jiang -
The detection of an uneven number of queues on the given memory windows
was not correct. The mw_num is zero based and the mod should be
division to spread them evenly over the mw's.Signed-off-by: Jon Mason
-
read_seqretry() returns true on mismatch, not on match...
Cc: stable@vger.kernel.org # 3.15+
Signed-off-by: Al Viro -
and lock the right list there
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro -
double-free is a bad thing
Signed-off-by: Al Viro
-
…/git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull futex and timer fixes from Thomas Gleixner:
"A oneliner bugfix for the jinxed futex code:- Drop hash bucket lock in the error exit path. I really could slap
myself for intruducing that bug while fixing all the other horror
in that code three month ago ...and the timer department is not too proud about the following fixes:
- Deal with a long standing rounding bug in the timeval to jiffies
conversion. It's a real issue and this fix fell through the cracks
for quite some time.- Another round of alarmtimer fixes. Finally this code gets used
more widely and the subtle issues hidden for quite some time are
noticed and fixed. Nothing really exciting, just the itty bitty
details which bite the serious users here and there"* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Unlock hb->lock in futex_wait_requeue_pi() error path* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
alarmtimer: Lock k_itimer during timer callback
alarmtimer: Do not signal SIGEV_NONE timers
alarmtimer: Return relative times in timer_gettime
jiffies: Fix timeval conversion to jiffies -
The current LWS cas only works correctly for 32bit. The new LWS allows
for CAS operations of variable size.Signed-off-by: Guy Martin
Cc: # 3.13+
Signed-off-by: Helge Deller -
Josef Bacik found a performance regression between 3.2 and 3.10 and
narrowed it down to commit bfcfaa77bdf0 ("vfs: use 'unsigned long'
accesses for dcache name comparison and hashing"). He reports:"The test case is essentially
for (i = 0; i < 1000000; i++)
mkdir("a$i");On xfs on a fio card this goes at about 20k dir/sec with 3.2, and 12k
dir/sec with 3.10. This is because we spend waaaaay more time in
__d_lookup on 3.10 than in 3.2.The new hashing function for strings is suboptimal for <
sizeof(unsigned long) string names (and hell even > sizeof(unsigned
long) string names that I've tested). I broke out the old hashing
function and the new one into a userspace helper to get real numbers
and this is what I'm getting:Old hash table had 1000000 entries, 0 dupes, 0 max dupes
New hash table had 12628 entries, 987372 dupes, 900 max dupes
We had 11400 buckets with a p50 of 30 dupes, p90 of 240 dupes, p99 of 567 dupes for the new hashMy test does the hash, and then does the d_hash into a integer pointer
array the same size as the dentry hash table on my system, and then
just increments the value at the address we got to see how many
entries we overlap with.As you can see the old hash function ended up with all 1 million
entries in their own bucket, whereas the new one they are only
distributed among ~12.5k buckets, which is why we're using so much
more CPU in __d_lookup".The reason for this hash regression is two-fold:
- On 64-bit architectures the down-mixing of the original 64-bit
word-at-a-time hash into the final 32-bit hash value is very
simplistic and suboptimal, and just adds the two 32-bit parts
together.In particular, because there is no bit shuffling and the mixing
boundary is also a byte boundary, similar character patterns in the
low and high word easily end up just canceling each other out.- the old byte-at-a-time hash mixed each byte into the final hash as it
hashed the path component name, resulting in the low bits of the hash
generally being a good source of hash data. That is not true for the
word-at-a-time case, and the hash data is distributed among all the
bits.The fix is the same in both cases: do a better job of mixing the bits up
and using as much of the hash data as possible. We already have the
"hash_32|64()" functions to do that.Reported-by: Josef Bacik
Cc: Al Viro
Cc: Christoph Hellwig
Cc: Chris Mason
Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Linus Torvalds -
The hash_64() function historically does the multiply by the
GOLDEN_RATIO_PRIME_64 number with explicit shifts and adds, because
unlike the 32-bit case, gcc seems unable to turn the constant multiply
into the more appropriate shift and adds when required.However, that means that we generate those shifts and adds even when the
architecture has a fast multiplier, and could just do it better in
hardware.Use the now-cleaned-up CONFIG_ARCH_HAS_FAST_MULTIPLIER (together with
"is it a 64-bit architecture") to decide whether to use an integer
multiply or the explicit sequence of shift/add instructions.Signed-off-by: Linus Torvalds
-
It used to be an ad-hoc hack defined by the x86 version of
that enabled a couple of library routines to know whether
an integer multiply is faster than repeated shifts and additions.This just makes it use the real Kconfig system instead, and makes x86
(which was the only architecture that did this) select the option.NOTE! Even for x86, this really is kind of wrong. If we cared, we would
probably not enable this for builds optimized for netburst (P4), where
shifts-and-adds are generally faster than multiplies. This patch does
*not* change that kind of logic, though, it is purely a syntactic change
with no code changes.This was triggered by the fact that we have other places that really
want to know "do I want to expand multiples by constants by hand or
not", particularly the hash generation code.Signed-off-by: Linus Torvalds
-
Pull device mapper fix from Mike Snitzer:
"Fix a race in the DM cache target that caused dirty blocks to be
marked as clean. This could cause no writeback to occur or spurious
dirty block counts"* tag 'dm-3.17-fix2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm cache: fix race causing dirty blocks to be marked as clean -
Pull block fixes from Jens Axboe:
"A small collection of fixes for the current rc series. This contains:- Two small blk-mq patches from Rob Elliott, cleaning up error case
at init time.- A fix from Ming Lei, fixing SG merging for blk-mq where
QUEUE_FLAG_SG_NO_MERGE is the default.- A dev_t minor lifetime fix from Keith, fixing an issue where a
minor might be reused before all references to it were gone.- Fix from Alan Stern where an unbalanced queue bypass caused SCSI
some headaches when it does a series of add/del on devices without
fully registrering the queue.- A fix from me for improving the scaling of tag depth in blk-mq if
we are short on memory"* 'for-linus' of git://git.kernel.dk/linux-block:
blk-mq: scale depth and rq map appropriate if low on memory
Block: fix unbalanced bypass-disable in blk_register_queue
block: Fix dev_t minor allocation lifetime
blk-mq: cleanup after blk_mq_init_rq_map failures
blk-mq: pass along blk_mq_alloc_tag_set return values
blk-merge: fix blk_recount_segments
13 Sep, 2014
15 commits
-
…linux/kernel/git/xen/tip
Pull Xen ARM bugfix from Stefano Stabellini:
"The patches fix the "xen_add_mach_to_phys_entry: cannot add" bug that
has been affecting xen on arm and arm64 guests since 3.16. They
require a few hypervisor side changes that just went in xen-unstable.A couple of days ago David sent out a pull request with a few other
Xen fixes (it is already in master). Sorry we didn't synchronized
better among us"* tag 'stable/for-linus-3.17-b-rc4-arm-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/arm: remove mach_to_phys rbtree
xen/arm: reimplement xen_dma_unmap_page & friends
xen/arm: introduce XENFEAT_grant_map_identity -
Locks the k_itimer's it_lock member when handling the alarm timer's
expiry callback.The regular posix timers defined in posix-timers.c have this lock held
during timout processing because their callbacks are routed through
posix_timer_fn(). The alarm timers follow a different path, so they
ought to grab the lock somewhere else.Cc: stable@vger.kernel.org
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: Richard Cochran
Cc: Prarit Bhargava
Cc: Sharvil Nanavati
Signed-off-by: Richard Larocque
Signed-off-by: John Stultz -
Avoids sending a signal to alarm timers created with sigev_notify set to
SIGEV_NONE by checking for that special case in the timeout callback.The regular posix timers avoid sending signals to SIGEV_NONE timers by
not scheduling any callbacks for them in the first place. Although it
would be possible to do something similar for alarm timers, it's simpler
to handle this as a special case in the timeout.Prior to this patch, the alarm timer would ignore the sigev_notify value
and try to deliver signals to the process anyway. Even worse, the
sanity check for the value of sigev_signo is skipped when SIGEV_NONE was
specified, so the signal number could be bogus. If sigev_signo was an
unitialized value (as it often would be if SIGEV_NONE is used), then
it's hard to predict which signal will be sent.Cc: stable@vger.kernel.org
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: Richard Cochran
Cc: Prarit Bhargava
Cc: Sharvil Nanavati
Signed-off-by: Richard Larocque
Signed-off-by: John Stultz -
Returns the time remaining for an alarm timer, rather than the time at
which it is scheduled to expire. If the timer has already expired or it
is not currently scheduled, the it_value's members are set to zero.This new behavior matches that of the other posix-timers and the POSIX
specifications.This is a change in user-visible behavior, and may break existing
applications. Hopefully, few users rely on the old incorrect behavior.Cc: stable@vger.kernel.org
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: Richard Cochran
Cc: Prarit Bhargava
Cc: Sharvil Nanavati
Signed-off-by: Richard Larocque
[jstultz: minor style tweak]
Signed-off-by: John Stultz -
timeval_to_jiffies tried to round a timeval up to an integral number
of jiffies, but the logic for doing so was incorrect: intervals
corresponding to exactly N jiffies would become N+1. This manifested
itself particularly repeatedly stopping/starting an itimer:setitimer(ITIMER_PROF, &val, NULL);
setitimer(ITIMER_PROF, NULL, &val);would add a full tick to val, _even if it was exactly representable in
terms of jiffies_ (say, the result of a previous rounding.) Doing
this repeatedly would cause unbounded growth in val. So fix the math.Here's what was wrong with the conversion: we essentially computed
(eliding seconds)jiffies = usec * (NSEC_PER_USEC/TICK_NSEC)
by using scaling arithmetic, which took the best approximation of
NSEC_PER_USEC/TICK_NSEC with denominator of 2^USEC_JIFFIE_SC =
x/(2^USEC_JIFFIE_SC), and computed:jiffies = (usec * x) >> USEC_JIFFIE_SC
and rounded this calculation up in the intermediate form (since we
can't necessarily exactly represent TICK_NSEC in usec.) But the
scaling arithmetic is a (very slight) *over*approximation of the true
value; that is, instead of dividing by (1 usec/ 1 jiffie), we
effectively divided by (1 usec/1 jiffie)-epsilon (rounding
down). This would normally be fine, but we want to round timeouts up,
and we did so by adding 2^USEC_JIFFIE_SC - 1 before the shift; this
would be fine if our division was exact, but dividing this by the
slightly smaller factor was equivalent to adding just _over_ 1 to the
final result (instead of just _under_ 1, as desired.)In particular, with HZ=1000, we consistently computed that 10000 usec
was 11 jiffies; the same was true for any exact multiple of
TICK_NSEC.We could possibly still round in the intermediate form, adding
something less than 2^USEC_JIFFIE_SC - 1, but easier still is to
convert usec->nsec, round in nanoseconds, and then convert using
time*spec*_to_jiffies. This adds one constant multiplication, and is
not observably slower in microbenchmarks on recent x86 hardware.Tested: the following program:
int main() {
struct itimerval zero = {{0, 0}, {0, 0}};
/* Initially set to 10 ms. */
struct itimerval initial = zero;
initial.it_interval.tv_usec = 10000;
setitimer(ITIMER_PROF, &initial, NULL);
/* Save and restore several times. */
for (size_t i = 0; i < 10; ++i) {
struct itimerval prev;
setitimer(ITIMER_PROF, &zero, &prev);
/* on old kernels, this goes up by TICK_USEC every iteration */
printf("previous value: %ld %ld %ld %ld\n",
prev.it_interval.tv_sec, prev.it_interval.tv_usec,
prev.it_value.tv_sec, prev.it_value.tv_usec);
setitimer(ITIMER_PROF, &prev, NULL);
}
return 0;
}Cc: stable@vger.kernel.org
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: Paul Turner
Cc: Richard Cochran
Cc: Prarit Bhargava
Reviewed-by: Paul Turner
Reported-by: Aaron Jacobs
Signed-off-by: Andrew Hunter
[jstultz: Tweaked to apply to 3.17-rc]
Signed-off-by: John Stultz -
futex_wait_requeue_pi() calls futex_wait_setup(). If
futex_wait_setup() succeeds it returns with hb->lock held and
preemption disabled. Now the sanity check after this does:if (match_futex(&q.key, &key2)) {
ret = -EINVAL;
goto out_put_keys;
}which releases the keys but does not release hb->lock.
So we happily return to user space with hb->lock held and therefor
preemption disabled.Unlock hb->lock before taking the exit route.
Reported-by: Dave "Trinity" Jones
Signed-off-by: Thomas Gleixner
Reviewed-by: Darren Hart
Reviewed-by: Davidlohr Bueso
Cc: Peter Zijlstra
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1409112318500.4178@nanos
Signed-off-by: Thomas Gleixner -
Pull char/misc driver fix from Greg KH:
"Here is one misc driver fix for 3.17-rc5. It resolves a kernel oops
that can happen in the lattice FPGA driver if the firmware isn't
present on the system.It's been in the linux-next tree for a while now"
* tag 'char-misc-3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Lattice ECP3 FPGA: Check firmware pointer -
Pull staging driver fixes from Greg KH:
"Here are 3 tiny staging driver fixes for 3.17-rc5.Two are fixes for the imx-drm driver, resolving issues that have been
reported. The other is a memory leak fix for the Android sync driver,
due to changes that went into 3.17-rc1.All have been in linux-next for a while"
* tag 'staging-3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
android: fix reference leak in sync_fence_create
imx-drm: imx-ldb: fix NULL pointer in imx_ldb_unbind()
imx-drm: ipuv3-plane: fix ipu_plane_dpms() -
Pull tty/serial fixes from Greg KH:
"Here are 3 patches for 3.17-rc5. Two serial driver fixes that resolve
some reported issues, and one new device id.All have been in linux-next just fine"
* tag 'tty-3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty: xuartps: Fix tx_emtpy() callback
tty/serial: at91: BUG: disable interrupts when !UART_ENABLE_MS()
serial: 8250_dw: Add ACPI ID for Intel Braswell -
Pull USB fixes from Greg KH:
"Here are some USB and PHY fixes for 3.17-rc5.Nothing major here, just a number of tiny fixes for reported issues,
and some new device ids as well.All have been tested in linux-next"
* tag 'usb-3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (46 commits)
xhci: fix oops when xhci resumes from hibernate with hw lpm capable devices
usb: xhci: Fix OOPS in xhci error handling code
xhci: Fix null pointer dereference if xhci initialization fails
storage: Add single-LUN quirk for Jaz USB Adapter
uas: Add missing le16_to_cpu calls to asm1051 / asm1053 usb-id check
usb: chipidea: msm: Initialize PHY on reset event
usb: chipidea: msm: Use USB PHY API to control PHY state
usb: hub: take hub->hdev reference when processing from eventlist
uas: Disable uas on ASM1051 devices
usb: dwc2/gadget: avoid disabling ep0
usb: dwc2/gadget: delay enabling irq once hardware is configured properly
usb: dwc2/gadget: do not call disconnect method in pullup
usb: dwc2/gadget: break infinite loop in endpoint disable code
usb: dwc2/gadget: fix phy initialization sequence
usb: dwc2/gadget: fix phy disable sequence
uwb: init beacon cache entry before registering uwb device
USB: ftdi_sio: Add support for GE Healthcare Nemo Tracker device
USB: document the 'u' flag for usb-storage quirks parameter
usb: host: xhci: fix compliance mode workaround
usb: dwc3: fix TRB completion when multiple TRBs are started
... -
Pull NFS client fixes from Trond Myklebust:
"Highlights:
- fix a kernel warning when removing /proc/net/nfsfs
- revert commit 49a4bda22e18 due to Oopses
- fix a typo in the pNFS file layout commit code"* tag 'nfs-for-3.17-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
pnfs: fix filelayout_retry_commit when idx > 0
nfs: revert "nfs4: queue free_lock_state job submission to nfsiod"
nfs: fix kernel warning when removing proc entry -
Pull btrfs fixes from Chris Mason:
"Filipe is doing a careful pass through fsync problems, and these are
the fixes so far. I'll have one more for rc6 that we're still
testing.My big commit is fixing up some inode hash races that Al Viro found
(thanks Al)"* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: use insert_inode_locked4 for inode creation
Btrfs: fix fsync data loss after a ranged fsync
Btrfs: kfree()ing ERR_PTRs
Btrfs: fix crash while doing a ranged fsync
Btrfs: fix corruption after write/fsync failure + fsync + log recovery
Btrfs: fix autodefrag with compression -
Pull arm64 fixes from Will Deacon:
"Just a couple of stragglers here:- fix an issue migrating interrupts on CPU hotplug
- fix a potential information leak of TLS registers across an exec
(Nathan has sent a corresponding patch for arch/arm/ to rmk)"* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: flush TLS registers during exec
arm64: use irq_set_affinity with force=false when migrating irqs -
Pull iommu fixes from Joerg Roedel:
- two fixes for issues found by Coverity
- various fixes for the ARM SMMU driver
- a warning fix for the FSL PAMU driver* tag 'iommu-fixes-v3.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/fsl: Fix warning resulting from adding PCI device twice
iommu/arm-smmu: fix corner cases in address size calculations
iommu/arm-smmu: fix decimal printf format specifiers prefixed with 0x
iommu/arm-smmu: Do not access non-existing S2CR registers
iommu/arm-smmu: fix s2cr and smr teardown on device detach from domain
iommu/arm-smmu: remove pgtable_page_{c,d}tor()
iommu/arm-smmu: fix programming of SMMU_CBn_TCR for stage 1
iommu/arm-smmu: avoid calling request_irq in atomic context
iommu/vt-d: Check return value of acpi_bus_get_device()
iommu/core: Make iommu_group_get_for_dev() more robust -
Pull assoc array garbage collection fix from James Morris.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
KEYS: Fix termination condition in assoc array garbage collection
