Commit Graph

494716 Commits

Author SHA1 Message Date
Julia Lawall
d0e520ef63 atheros: atlx: Use setup_timer
Convert a call to init_timer and accompanying intializations of
the timer's data and function fields to a call to setup_timer.

A simplified version of the semantic match that fixes this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression t,f,d;
@@

-init_timer(&t);
+setup_timer(&t,f,d);
-t.function = f;
-t.data = d;
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-30 18:34:23 -05:00
David S. Miller
5115ec9654 Merge branch 'timecounter'
Richard Cochran says:

====================
Time Counter fixes and improvements

Several PTP Hardware Clock (PHC) drivers implement the clock in
software using the timecounter/cyclecounter code. This series adds one
simple improvement and one more subtle fix to the shared timecounter
facility. Credit for this series goes to Janusz Użycki, who pointed
the issues out to me off list.

Patch #1 simply move the timecounter code into its own file. When
working on this series, it was really annoying to see half the kernel
recompile after every tweak to the timecounter stuff. There is no
reason to keep this together with the clocksource code.

Patch #2 implements an improved adjtime() method, and patches 3-10
convert all of the drivers over to the new method.

Patch #11 fixes a subtle but important issue with the timecounter WRT
frequency adjustment. As it stands now, a timecounter based PHC will
exhibit a variable frequency resolution (and variable time error)
depending on how often the clock is read.

In timecounter_read_delta(), the expression

   (delta * cc->mult) >> cc->shift;

can lose resolution from the adjusted value of 'mult'. If the value
of 'delta' is too small, then small changes in 'mult' have no effect.
However, if the delta value is large enough, then small changes in
'mult' will have an effect.

Reading the clock too often means smaller 'delta' values which in turn
will spoil the fine adjustments made to 'mult'. Up until now, this
effect did not show up in my testing. The following example explains
why.

The CPTS has an input clock of 250 MHz, and the clock source uses
mult=0x80000000 and shift=29, making the ticks to nanoseconds
conversion like this:

   ticks * 2^31
   ------------
       2^29

Imagine what happens if the clock is read every 10 milliseconds. Ten
milliseconds are about 2500000 ticks, which corresponds to about 21
bits. The product in the numerator has then 52 bits. After the shift
operation, 23 bits are preserved. This results in a frequency
adjustment resolution of about 0.1 ppm (not _too_ bad.)

A frequency resolution of 1 ppm requires 20 bits.
A frequency resolution of 1 ppb requires 30 bits.

For the 250 MHz CPTS clock, reading every 4 seconds yields a 1 ppb
resolution (which is the finest that our API allows).

However, the error can be much higher if the clock is read too often
or if time stamps occur close in time to read operations. In general
it is really not acceptable to allow the rate of clock readings to
influence the clock accuracy.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-30 18:30:00 -05:00
Richard Cochran
2eebdde652 timecounter: keep track of accumulated fractional nanoseconds
The current timecounter implementation will drop a variable amount
of resolution, depending on the magnitude of the time delta. In
other words, reading the clock too often or too close to a time
stamp conversion will introduce errors into the time values. This
patch fixes the issue by introducing a fractional nanosecond field
that accumulates the low order bits.

Reported-by: Janusz Użycki <j.uzycki@elproma.com.pl>
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-30 18:29:27 -05:00
Richard Cochran
f25a30be35 net: cpts: convert to timecounter adjtime.
This patch changes the driver to use the new and improved method
for adjusting the offset of a timecounter.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-30 18:29:27 -05:00
Richard Cochran
ce51ff0937 net: mlx4: convert to timecounter adjtime.
This patch changes the driver to use the new and improved method
for adjusting the offset of a timecounter.

Compile tested only.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-30 18:29:27 -05:00
Richard Cochran
826ef90dc4 net: ixgbe: convert to timecounter adjtime.
This patch changes the driver to use the new and improved method
for adjusting the offset of a timecounter.

Compile tested only.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-30 18:29:27 -05:00
Richard Cochran
5ee698e367 net: igb: convert to timecounter adjtime.
This patch changes the driver to use the new and improved method
for adjusting the offset of a timecounter.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-30 18:29:26 -05:00
Richard Cochran
f4de2b9568 net: e1000e: convert to timecounter adjtime.
This patch changes the driver to use the new and improved method
for adjusting the offset of a timecounter.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-30 18:29:26 -05:00
Richard Cochran
59e16961c6 net: fec: convert to timecounter adjtime.
This patch changes the driver to use the new and improved method
for adjusting the offset of a timecounter.

Compile tested only.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-30 18:29:26 -05:00
Richard Cochran
2e5601f9ac net: bnx2x: convert to timecounter adjtime.
This patch changes the driver to use the new and improved method
for adjusting the offset of a timecounter.

Compile tested only.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-30 18:29:26 -05:00
Richard Cochran
8b976e9777 net: xgbe: convert to timecounter adjtime.
This patch changes the driver to use the new and improved method
for adjusting the offset of a timecounter.

Compile tested only.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-30 18:29:26 -05:00
Richard Cochran
796c1efd6f timecounter: provide a helper function to shift the time.
Some PTP Hardware Clock drivers use a struct timecounter to represent
their clock. To adjust the time by a given offset, these drivers all
perform a two step read/write of their timecounter. However, it is
better and simpler just to adjust the offset in one step. This patch
introduces a little routine to help drivers implement the adjtime
method.

Suggested-by: Janusz Użycki <j.uzycki@elproma.com.pl>
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-30 18:29:25 -05:00
Richard Cochran
74d23cc704 time: move the timecounter/cyclecounter code into its own file.
The timecounter code has almost nothing to do with the clocksource
code. Let it live in its own file. This will help isolate the
timecounter users from the clocksource users in the source tree.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-30 18:29:25 -05:00
Linus Torvalds
2c90331cf5 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Fix double SKB free in bluetooth 6lowpan layer, from Jukka Rissanen.

 2) Fix receive checksum handling in enic driver, from Govindarajulu
    Varadarajan.

 3) Fix NAPI poll list corruption in virtio_net and caif_virtio, from
    Herbert Xu.  Also, add code to detect drivers that have this mistake
    in the future.

 4) Fix doorbell endianness handling in mlx4 driver, from Amir Vadai.

 5) Don't clobber IP6CB() before xfrm6_policy_check() is called in TCP
    input path,f rom Nicolas Dichtel.

 6) Fix MPLS action validation in openvswitch, from Pravin B Shelar.

 7) Fix double SKB free in vxlan driver, also from Pravin.

 8) When we scrub a packet, which happens when we are switching the
    context of the packet (namespace, etc.), we should reset the
    secmark.  From Thomas Graf.

 9) ->ndo_gso_check() needs to do more than return true/false, it also
    has to allow the driver to clear netdev feature bits in order for
    the caller to be able to proceed properly.  From Jesse Gross.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (62 commits)
  genetlink: A genl_bind() to an out-of-range multicast group should not WARN().
  netlink/genetlink: pass network namespace to bind/unbind
  ne2k-pci: Add pci_disable_device in error handling
  bonding: change error message to debug message in __bond_release_one()
  genetlink: pass multicast bind/unbind to families
  netlink: call unbind when releasing socket
  netlink: update listeners directly when removing socket
  genetlink: pass only network namespace to genl_has_listeners()
  netlink: rename netlink_unbind() to netlink_undo_bind()
  net: Generalize ndo_gso_check to ndo_features_check
  net: incorrect use of init_completion fixup
  neigh: remove next ptr from struct neigh_table
  net: xilinx: Remove unnecessary temac_property in the driver
  net: phy: micrel: use generic config_init for KSZ8021/KSZ8031
  net/core: Handle csum for CHECKSUM_COMPLETE VXLAN forwarding
  openvswitch: fix odd_ptr_err.cocci warnings
  Bluetooth: Fix accepting connections when not using mgmt
  Bluetooth: Fix controller configuration with HCI_QUIRK_INVALID_BDADDR
  brcmfmac: Do not crash if platform data is not populated
  ipw2200: select CFG80211_WEXT
  ...
2014-12-30 10:45:47 -08:00
Linus Torvalds
6ab1e8de9f kselftest fixes for: 3.19
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Merge tag 'linux-kselftest-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fix from Shuah Khan:
 "Fix exec test compile warnings"

* tag 'linux-kselftest-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests/exec: Use %zu to format size_t
2014-12-30 10:36:59 -08:00
Linus Torvalds
5faa0154fe Merge branch 'for-linus' of git://git.samba.org/sfrench/cifs-2.6
Pull CIFS fixes from Steve French:
 "A set of three minor cifs fixes"

* 'for-linus' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: make new inode cache when file type is different
  Fix signed/unsigned pointer warning
  Convert MessageID in smb2_hdr to LE
2014-12-29 21:09:57 -08:00
Linus Torvalds
b9d4a35f0a Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull UDF & isofs fixes from Jan Kara:
 "A couple of UDF fixes of handling of corrupted media and one iso9660
  fix of the same"

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  udf: Reduce repeated dereferences
  udf: Check component length before reading it
  udf: Check path length when reading symlink
  udf: Verify symlink size before loading it
  udf: Verify i_size when loading inode
  isofs: Fix unchecked printing of ER records
2014-12-29 20:43:10 -08:00
Linus Torvalds
df90dcd100 Power management and ACPI material for 3.19-rc3
- Fix for a potential NULL pointer dereference in the cpufreq
    core due to an initialization race condition (Ethan Zhao).
 
  - Fixes for abuse of the OPP (Operating Performance Points) API
    related to RCU and other minor issues in the OPP library and
    the cpufreq-dt driver (Dmitry Torokhov).
 
  - cpuidle governors cleanup making them measure idle duration in
    a better way without using the CPUIDLE_FLAG_TIME_INVALID flag
    which allows that flag to be dropped from the ACPI cpuidle driver
    and from the core too (Len Brown).
 
  - New ACPI backlight blacklist entries for Samsung machines
    without a working native backlight interface that need to
    use the ACPI backlight instead (Aaron Lu).
 
  - New CPU IDs of future Intel Xeon CPUs for the Intel RAPL power
    capping driver (Jacob Pan).
 
  - Generic power domains framework modification to export the
    of_genpd_get_from_provider() function to modular drivers that
    will allow future driver modifications to be based on the mainline
    (Amit Daniel Kachhap).
 
  - Two fixes for the cpupower tool (Michal Privoznik, Prarit Bhargava).
 
 /
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Merge tag 'pm+acpi-3.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI material from Rafael J Wysocki:
 "These are fixes (operating performance points library, cpufreq-dt
  driver, cpufreq core, ACPI backlight, cpupower tool), cleanups
  (cpuidle), new processor IDs for the RAPL (Running Average Power
  Limit) power capping driver, and a modification of the generic power
  domains framework allowing modular drivers to call one of its helper
  functions.

  Specifics:

   - Fix for a potential NULL pointer dereference in the cpufreq core
     due to an initialization race condition (Ethan Zhao).

   - Fixes for abuse of the OPP (Operating Performance Points) API
     related to RCU and other minor issues in the OPP library and the
     cpufreq-dt driver (Dmitry Torokhov).

   - cpuidle governors cleanup making them measure idle duration in a
     better way without using the CPUIDLE_FLAG_TIME_INVALID flag which
     allows that flag to be dropped from the ACPI cpuidle driver and
     from the core too (Len Brown).

   - New ACPI backlight blacklist entries for Samsung machines without a
     working native backlight interface that need to use the ACPI
     backlight instead (Aaron Lu).

   - New CPU IDs of future Intel Xeon CPUs for the Intel RAPL power
     capping driver (Jacob Pan).

   - Generic power domains framework modification to export the
     of_genpd_get_from_provider() function to modular drivers that will
     allow future driver modifications to be based on the mainline (Amit
     Daniel Kachhap).

   - Two fixes for the cpupower tool (Michal Privoznik, Prarit
     Bhargava)"

* tag 'pm+acpi-3.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / video: Add some Samsung models to disable_native_backlight list
  tools / cpupower: Fix no idle state information return value
  tools / cpupower: Correctly detect if running as root
  cpufreq: fix a NULL pointer dereference in __cpufreq_governor()
  cpufreq-dt: defer probing if OPP table is not ready
  PM / OPP: take RCU lock in dev_pm_opp_get_opp_count
  PM / OPP: fix warning in of_free_opp_table()
  PM / OPP: add some lockdep annotations
  powercap / RAPL: add IDs for future Xeon CPUs
  PM / Domains: Export of_genpd_get_from_provider function
  cpuidle / ACPI: remove unused CPUIDLE_FLAG_TIME_INVALID
  cpuidle: ladder: Better idle duration measurement without using CPUIDLE_FLAG_TIME_INVALID
  cpuidle: menu: Better idle duration measurement without using CPUIDLE_FLAG_TIME_INVALID
2014-12-29 18:50:02 -08:00
David S. Miller
dc97a1a947 genetlink: A genl_bind() to an out-of-range multicast group should not WARN().
Users can request to bind to arbitrary multicast groups, so warning
when the requested group number is out of range is not appropriate.

And with the warning removed, and the 'err' variable properly given
an initial value, we can remove 'found' altogether.

Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-29 16:31:49 -05:00
Linus Torvalds
346eef2fc0 spi: Fixes for v3.19
A few driver specific fixes here, the DMA burst size increase in the
 spfi driver is a fix to make the hardware happier in some situations.
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Merge tag 'spi-v3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "A few driver specific fixes here, the DMA burst size increase in the
  spfi driver is a fix to make the hardware happier in some situations"

* tag 'spi-v3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: img-spfi: Increase DMA burst size
  spi: img-spfi: Enable controller before starting TX DMA
  spi: sh-msiof: Add runtime PM lock in initializing
2014-12-29 13:30:50 -08:00
Linus Torvalds
034496f40d regulator: Fix for v3.19
One fix here, a fix for the voltage mapping on one of the s2mps11
 regulators which broke systems using it including apparently the Gear 2
 smartwatches.
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Merge tag 'regulator-v3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull one regulator fix from Mark Brown:
 "One fix here, a fix for the voltage mapping on one of the s2mps11
  regulators which broke systems using it including apparently the
  Gear 2 smartwatches"

* tag 'regulator-v3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: s2mps11: Fix dw_mmc failure on Gear 2
2014-12-29 13:24:38 -08:00
Linus Torvalds
5e6c2c97c5 MMC core:
- Fix selection of buswidth for mmc hosts supporting 1-bit only.
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Merge tag 'mmc-v3.19-2' of git://git.linaro.org/people/ulf.hansson/mmc

Pull one MMC fix from Ulf Hansson:
 "MMC core:

   - Fix selection of buswidth for mmc hosts supporting 1-bit only"

* tag 'mmc-v3.19-2' of git://git.linaro.org/people/ulf.hansson/mmc:
  mmc: core: stop trying to switch width when only one bit is supported
2014-12-29 13:19:56 -08:00
Linus Torvalds
4c5d499503 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management updates from Zhang Rui:
 "First of all, the most important change is the thermal cpu cooling
  fixes.  The major fix here is to have proper sequencing between
  cpufreq layer and thermal cpu cooling registration.  A take away of
  this fix is an improvement in the thermal drivers code.  Thermal
  drivers that require cpu cooling do not need to check for cpufreq
  layer.  The requirement now is to propagate the error code, if any,
  while registering cpu cooling device.  Thanks to Viresh for
  implementing the required CPUfreq changes.

  Second, a new driver is introduced for int340x processor thermal
  device.  Given that int340x thermal is disabled by default, and this
  processor thermal device is only available on limited platforms, plus
  the driver does nothing but exposes some thermal limitation
  information for user space to use, thus I think it is safe to include
  it in this pull request after missing 3.19-rc2.

  Specifics:

   - Thermal cpu cooling fixes and cleanups.

   - introduce INT340X processor thermal reporting device driver.

   - several small fixes and cleanups for int340x thermal drivers"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (43 commits)
  Thermal/int340x/int3403: Free acpi notification handler
  Thermal/int340x/processor_thermal: Fix memory leak
  Thermal/int340x/int3403: Fix memory leak
  thermal: int340x: Introduce processor reporting device
  thermal: int340x_thermal: drop owner assignment from platform_drivers
  thermal: drop owner assignment from platform_drivers
  thermal: cpu_cooling: document node in struct cpufreq_cooling_device
  thermal/powerclamp: add ids for future xeon cpus
  Thermal/int340x: Handle properly the case when _trt or _art acpi entry is missing
  thermal: cpu_cooling: return ERR_PTR() for !CPU_THERMAL or !THERMAL_OF
  thermal: cpu_cooling: small memory leak on error
  thermal: ti-soc-thermal: Do not print error message in the EPROBE_DEFER case
  thermal: db8500: Do not print error message in the EPROBE_DEFER case
  thermal: imx: Do not print error message in the EPROBE_DEFER case
  thermal: Fix cdev registration with THERMAL_NO_LIMIT on 64bit
  drivers: thermal: Remove ARCH_HAS_BANDGAP dependency for samsung
  thermal:core:fix: Check return code of the ->get_max_state() callback
  thermal: cpu_cooling: update copyright tags
  thermal: cpu_cooling: Use cpufreq_dev->freq_table for finding level/freq
  thermal: cpu_cooling: Store frequencies in descending order
  ...
2014-12-29 13:13:41 -08:00
Michal Hocko
45f87de57f mm: get rid of radix tree gfp mask for pagecache_get_page
Commit 2457aec637 ("mm: non-atomically mark page accessed during page
cache allocation where possible") has added a separate parameter for
specifying gfp mask for radix tree allocations.

Not only this is less than optimal from the API point of view because it
is error prone, it is also buggy currently because
grab_cache_page_write_begin is using GFP_KERNEL for radix tree and if
fgp_flags doesn't contain FGP_NOFS (mostly controlled by fs by
AOP_FLAG_NOFS flag) but the mapping_gfp_mask has __GFP_FS cleared then
the radix tree allocation wouldn't obey the restriction and might
recurse into filesystem and cause deadlocks.  This is the case for most
filesystems unfortunately because only ext4 and gfs2 are using
AOP_FLAG_NOFS.

Let's simply remove radix_gfp_mask parameter because the allocation
context is same for both page cache and for the radix tree.  Just make
sure that the radix tree gets only the sane subset of the mask (e.g.  do
not pass __GFP_WRITE).

Long term it is more preferable to convert remaining users of
AOP_FLAG_NOFS to use mapping_gfp_mask instead and simplify this
interface even further.

Reported-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-29 12:45:45 -08:00
Rafael J. Wysocki
651c3293bf Merge branch 'acpi-video'
* acpi-video:
  ACPI / video: Add some Samsung models to disable_native_backlight list
2014-12-29 21:24:13 +01:00
Rafael J. Wysocki
4f2f277789 Merge branches 'pm-domains', 'powercap' and 'pm-tools'
* pm-domains:
  PM / Domains: Export of_genpd_get_from_provider function

* powercap:
  powercap / RAPL: add IDs for future Xeon CPUs

* pm-tools:
  tools / cpupower: Fix no idle state information return value
  tools / cpupower: Correctly detect if running as root
2014-12-29 21:24:00 +01:00
Rafael J. Wysocki
ff23ab2441 Merge branches 'pm-cpufreq' and 'pm-cpuidle'
* pm-cpufreq:
  cpufreq: fix a NULL pointer dereference in __cpufreq_governor()
  cpufreq-dt: defer probing if OPP table is not ready

* pm-cpuidle:
  cpuidle / ACPI: remove unused CPUIDLE_FLAG_TIME_INVALID
  cpuidle: ladder: Better idle duration measurement without using CPUIDLE_FLAG_TIME_INVALID
  cpuidle: menu: Better idle duration measurement without using CPUIDLE_FLAG_TIME_INVALID
2014-12-29 21:23:41 +01:00
Rafael J. Wysocki
e0288b0e9e Merge branch 'pm-opp'
* pm-opp:
  PM / OPP: take RCU lock in dev_pm_opp_get_opp_count
  PM / OPP: fix warning in of_free_opp_table()
  PM / OPP: add some lockdep annotations
2014-12-29 21:23:13 +01:00
Alexandre Belloni
1c2d26e379 mmc: core: stop trying to switch width when only one bit is supported
mmc_select_bus_width() will try to switch to MMC_BUS_WIDTH_4 even if
MMC_CAP_4_BIT_DATA and MMC_CAP_8_BIT_DATA are not set in host->caps.
Return as soon as possible when those flags are not set

Fixes: 577fb13199 (mmc: rework selection of bus speed mode)
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: <stable@vger.kernel.org> # 3.17
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-12-29 14:49:28 +01:00
Linus Torvalds
b7392d2247 Linux 3.19-rc2 2014-12-28 16:49:37 -08:00
Linus Torvalds
2ea1e35ab1 The important fixes are for two bugs introduced by the merge window.
On top of this, add a couple of WARN_ONs and stop spamming dmesg on
 pretty much every boot of a virtual machine.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "The important fixes are for two bugs introduced by the merge window.

  On top of this, add a couple of WARN_ONs and stop spamming dmesg on
  pretty much every boot of a virtual machine"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  kvm: warn on more invariant breakage
  kvm: fix sorting of memslots with base_gfn == 0
  kvm: x86: drop severity of "generation wraparound" message
  kvm: x86: vmx: reorder some msr writing
2014-12-28 13:08:08 -08:00
Linus Torvalds
9a6b871d98 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fix from Al Viro:
 "An embarrassing bug in lustre patches from this cycle ;-/"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  [regression] braino in "lustre: use is_root_inode()"
2014-12-28 13:02:27 -08:00
Paolo Bonzini
dbaff30940 kvm: warn on more invariant breakage
Modifying a non-existent slot is not allowed.  Also check that the
first loop doesn't move a deleted slot beyond the used part of
the mslots array.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-28 10:01:25 +01:00
Paolo Bonzini
efbeec7098 kvm: fix sorting of memslots with base_gfn == 0
Before commit 0e60b0799f (kvm: change memslot sorting rule from size
to GFN, 2014-12-01), the memslots' sorting key was npages, meaning
that a valid memslot couldn't have its sorting key equal to zero.
On the other hand, a valid memslot can have base_gfn == 0, and invalid
memslots are identified by base_gfn == npages == 0.

Because of this, commit 0e60b0799f broke the invariant that invalid
memslots are at the end of the mslots array.  When a memslot with
base_gfn == 0 was created, any invalid memslot before it were left
in place.

This can be fixed by changing the insertion to use a ">=" comparison
instead of "<=", but some care is needed to avoid breaking the case
of deleting a memslot; see the comment in update_memslots.

Thanks to Tiejun Chen for posting an initial patch for this bug.

Reported-by: Jamie Heilman <jamie@audible.transient.net>
Reported-by: Andy Lutomirski <luto@amacapital.net>
Tested-by: Jamie Heilman <jamie@audible.transient.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-28 10:01:17 +01:00
Linus Torvalds
29169f8230 sound fixes for 3.19-rc2
Just a couple of fixes for the new Intel Skylake HD-audio support.
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Merge tag 'sound-3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Just a couple of fixes for the new Intel Skylake HD-audio support"

* tag 'sound-3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda_intel: apply the Seperate stream_tag for Skylake
  ALSA: hda_controller: Separate stream_tag for input and output streams.
2014-12-27 13:12:00 -08:00
Paolo Bonzini
a629df7ead kvm: x86: drop severity of "generation wraparound" message
Since most virtual machines raise this message once, it is a bit annoying.
Make it KERN_DEBUG severity.

Cc: stable@vger.kernel.org
Fixes: 7a2e8aaf0f
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-27 21:52:28 +01:00
Tiejun Chen
baa035227b kvm: x86: vmx: reorder some msr writing
The commit 34a1cd60d1, "x86: vmx: move some vmx setting from
vmx_init() to hardware_setup()", tried to refactor some codes
specific to vmx hardware setting into hardware_setup(), but some
msr writing should depend on our previous setting condition like
enable_apicv, enable_ept and so on.

Reported-by: Jamie Heilman <jamie@audible.transient.net>
Tested-by: Jamie Heilman <jamie@audible.transient.net>
Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-27 21:52:10 +01:00
Johannes Berg
023e2cfa36 netlink/genetlink: pass network namespace to bind/unbind
Netlink families can exist in multiple namespaces, and for the most
part multicast subscriptions are per network namespace. Thus it only
makes sense to have bind/unbind notifications per network namespace.

To achieve this, pass the network namespace of a given client socket
to the bind/unbind functions.

Also do this in generic netlink, and there also make sure that any
bind for multicast groups that only exist in init_net is rejected.
This isn't really a problem if it is accepted since a client in a
different namespace will never receive any notifications from such
a group, but it can confuse the family if not rejected (it's also
possible to silently (without telling the family) accept it, but it
would also have to be ignored on unbind so families that take any
kind of action on bind/unbind won't do unnecessary work for invalid
clients like that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-27 03:07:50 -05:00
Jia-Ju Bai
eb69c5bf82 ne2k-pci: Add pci_disable_device in error handling
For linux-3.18.0
The driver lacks pci_disable_device in error handling code of
ne2k_pci_init_one, so the device enabled by pci_enable_device is not
disabled when errors occur.
This patch fixes this problem.

Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-27 02:20:55 -05:00
Wengang Wang
a22a9e4141 bonding: change error message to debug message in __bond_release_one()
In __bond_release_one(), when the interface is not a slave or not a slave of
"this" master, it log error message.

The message actually should be a debug message matching what bond_enslave()
does.

Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Acked-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: Andy Gospodarek <gospo@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-27 02:20:55 -05:00
David S. Miller
24f626d343 Merge branch 'netlink_multicast'
Johannes Berg says:

====================
netlink/genetlink cleanups & multicast improvements

I'm looking at using the multicast group functionality in a way that would
benefit from knowing when there are subscribers to avoid collecting the
required data when there aren't any. During this I noticed that the unbind
for multicast groups doesn't actually work - it's never called when sockets
are closed. Luckily, nobody actually uses the functionality.

While looking at the code trying to find why it's not called and where the
multicast listeners are actually removed, I found the potential cleanup in
patch 3. Patch 2 also has a cleanup for a generic netlink API in this area.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-27 02:20:30 -05:00
Johannes Berg
c380d9a7af genetlink: pass multicast bind/unbind to families
In order to make the newly fixed multicast bind/unbind
functionality in generic netlink, pass them down to the
appropriate family.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-27 02:20:23 -05:00
Johannes Berg
7d68536bed netlink: call unbind when releasing socket
Currently, netlink_unbind() is only called when the socket
explicitly unbinds, which limits its usefulness (luckily
there are no users of it yet anyway.)

Call netlink_unbind() also when a socket is released, so it
becomes possible to track listeners with this callback and
without also implementing a netlink notifier (and checking
netlink_has_listeners() in there.)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-27 02:20:23 -05:00
Johannes Berg
b10dcb3b94 netlink: update listeners directly when removing socket
The code is now confusing to read - first in one function down
(netlink_remove) any group subscriptions are implicitly removed
by calling __sk_del_bind_node(), but the subscriber database is
only updated far later by calling netlink_update_listeners().

Move the latter call to just after removal from the list so it
is easier to follow the code.

This also enables moving the locking inside the kernel-socket
conditional, which improves the normal socket destruction path.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-27 02:20:23 -05:00
Johannes Berg
f8403a2e47 genetlink: pass only network namespace to genl_has_listeners()
There's no point to force the caller to know about the internal
genl_sock to use inside struct net, just have them pass the network
namespace. This doesn't really change code generation since it's
an inline, but makes the caller less magic - there's never any
reason to pass another socket.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-27 02:20:23 -05:00
Johannes Berg
02c81ab95d netlink: rename netlink_unbind() to netlink_undo_bind()
The new name is more expressive - this isn't a generic unbind
function but rather only a little undo helper for use only in
netlink_bind().

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-27 02:20:23 -05:00
Al Viro
5242d42297 [regression] braino in "lustre: use is_root_inode()"
In one of the places (ll_md_blocking_ast()) we had open-coded
!is_root_inode(inode) and replaced it with is_root_inode(inode).
See the last chunk of f76c23:
-                   inode != inode->i_sb->s_root->d_inode)
+                   is_root_inode(inode))
should've been
+                   !is_root_inode(inode))
obviously...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-12-26 22:43:19 -05:00
David S. Miller
eb46e2215f Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth
Johan Hedberg says:

====================
Here's one more bluetooth pull request for 3.19. We've got two fixes:

 - Fix for accepting connections with old user space versions of BlueZ
 - Fix for Bluetooth controllers that don't have a public address

Both of these are regressions that were introduced in 3.17, so the
appropriate Cc: stable annotations are provided.

Please let me know if there are any issues pulling. Thanks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-26 18:23:37 -05:00
David S. Miller
b63a2a1ff1 o Paul made a Kconfig dependency fix to ipw2200, it was not possible to
enable that driver because Wireless Extensions is now disabled by default.
 
 o Mika fixed brcmfmac not to crash when platform data is not populated
 
 o Emmanuel provided few fixes to iwlwifi, he says:
 
   "I have here new device IDs and a fix for double free bug I
   introduced. I also fix an issue with the RFKILL interrupt - the HW
   needs us to ACK the interrupt again after we reset it. Liad fixes an
   issue with the firmware debugging infrastructure. While working on
   torture scenarios of firmware restarts, Eliad found an issue which
   he fixed."
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Merge tag 'wireless-drivers-for-davem-2014-12-26' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers

o Paul made a Kconfig dependency fix to ipw2200, it was not possible to
  enable that driver because Wireless Extensions is now disabled by default.

o Mika fixed brcmfmac not to crash when platform data is not populated

o Emmanuel provided few fixes to iwlwifi, he says:

  "I have here new device IDs and a fix for double free bug I
  introduced. I also fix an issue with the RFKILL interrupt - the HW
  needs us to ACK the interrupt again after we reset it. Liad fixes an
  issue with the firmware debugging infrastructure. While working on
  torture scenarios of firmware restarts, Eliad found an issue which
  he fixed."

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-26 18:08:38 -05:00
Jesse Gross
5f35227ea3 net: Generalize ndo_gso_check to ndo_features_check
GSO isn't the only offload feature with restrictions that
potentially can't be expressed with the current features mechanism.
Checksum is another although it's a general issue that could in
theory apply to anything. Even if it may be possible to
implement these restrictions in other ways, it can result in
duplicate code or inefficient per-packet behavior.

This generalizes ndo_gso_check so that drivers can remove any
features that don't make sense for a given packet, similar to
netif_skb_features(). It also converts existing driver
restrictions to the new format, completing the work that was
done to support tunnel protocols since the issues apply to
checksums as well.

By actually removing features from the set that are used to do
offloading, it solves another problem with the existing
interface. In these cases, GSO would run with the original set
of features and not do anything because it appears that
segmentation is not required.

CC: Tom Herbert <therbert@google.com>
CC: Joe Stringer <joestringer@nicira.com>
CC: Eric Dumazet <edumazet@google.com>
CC: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by:  Tom Herbert <therbert@google.com>
Fixes: 04ffcb255f ("net: Add ndo_gso_check")
Tested-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-26 17:20:56 -05:00