Commit Graph

589092 Commits

Author SHA1 Message Date
Jeff Mahoney
b4201cc4fc mac80211: fix "warning: ‘target_metric’ may be used uninitialized"
This fixes:

net/mac80211/mesh_hwmp.c:603:26: warning: ‘target_metric’ may be used uninitialized in this function

target_metric is only consumed when reply = true so no bug exists here,
but not all versions of gcc realize it.  Initialize to 0 to remove the
warning.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-06 15:10:25 +02:00
Dave Airlie
30aab1897b Merge branch 'linux-4.6' of git://github.com/skeggsb/linux into drm-fixes
Just a single fix to prevent GM20B systems hanging at boot.

* 'linux-4.6' of git://github.com/skeggsb/linux:
  drm/nouveau/tegra: acquire and enable reference clock if needed
2016-04-06 16:16:52 +10:00
Alexandre Courbot
34440ed697 drm/nouveau/tegra: acquire and enable reference clock if needed
GM20B requires an extra clock compared to GK20A. Add that information
into the platform data and acquire and enable this clock if necessary.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-04-06 16:06:51 +10:00
Dave Airlie
4cf43e0ed4 Merge branch 'for-upstream/hdlcd' of git://linux-arm.org/linux-ld into drm-fixes
arm hdlcd fix.
* 'for-upstream/hdlcd' of git://linux-arm.org/linux-ld:
  drm: ARM HDLCD - fix an error code
  drm: ARM HDLCD - get rid of devm_clk_put()
2016-04-06 09:56:13 +10:00
Dave Airlie
915e846d4b imx-drm: stricter plane parameter checking, dw_hdmi-imx and dmfc fixes
- Check whether plane parameters comply with IPU IDMAC limitations and
   fix planar YUV 4:2:0 U/V offsets and stride
 - Cleanup encoder in dw_hdmi-imx bind error path and
   remove a superfluous platform_set_drvdata in dw_hdmi-imx
 - DMFC setup fixes: lock the ipu_dmfc_init_channel function against
   concurrent use, rename it to ipu_dmfc_config_wait4eot, and call
   it after the FIFO size has been determined.
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Merge tag 'imx-drm-next-2016-04-01' of git://git.pengutronix.de/git/pza/linux into drm-fixes

imx-drm: stricter plane parameter checking, dw_hdmi-imx and dmfc fixes

- Check whether plane parameters comply with IPU IDMAC limitations and
  fix planar YUV 4:2:0 U/V offsets and stride
- Cleanup encoder in dw_hdmi-imx bind error path and
  remove a superfluous platform_set_drvdata in dw_hdmi-imx
- DMFC setup fixes: lock the ipu_dmfc_init_channel function against
  concurrent use, rename it to ipu_dmfc_config_wait4eot, and call
  it after the FIFO size has been determined.

* tag 'imx-drm-next-2016-04-01' of git://git.pengutronix.de/git/pza/linux:
  drm/imx: Don't set a gamma table size
  drm/imx: ipuv3-plane: Configure DMFC wait4eot bit after slots are determined
  gpu: ipu-v3: ipu-dmfc: Rename ipu_dmfc_init_channel to ipu_dmfc_config_wait4eot
  gpu: ipu-v3: ipu-dmfc: Make function ipu_dmfc_init_channel() return void
  gpu: ipu-v3: ipu-dmfc: Protect function ipu_dmfc_init_channel() with mutex
  drm/imx: dw_hdmi: Don't call platform_set_drvdata()
  drm/imx: dw_hdmi: Call drm_encoder_cleanup() in error path
  drm/imx: ipuv3-plane: fix planar YUV 4:2:0 support
  drm/imx: ipuv3-plane: Add more thorough checks for plane parameter limitations
  gpu: ipu-cpmem: modify ipu_cpmem_set_yuv_planar_full for better control
2016-04-06 09:48:53 +10:00
Thadeu Lima de Souza Cascardo
b6ee376cb0 ip6_tunnel: set rtnl_link_ops before calling register_netdevice
When creating an ip6tnl tunnel with ip tunnel, rtnl_link_ops is not set
before ip6_tnl_create2 is called. When register_netdevice is called, there
is no linkinfo attribute in the NEWLINK message because of that.

Setting rtnl_link_ops before calling register_netdevice fixes that.

Fixes: 0b11245722 ("ip6tnl: add support of link creation via rtnl")
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@redhat.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-05 19:48:51 -04:00
Bjorn Helgaas
727ceaa49b Revert "netpoll: Fix extra refcount release in netpoll_cleanup()"
This reverts commit 543e3a8da5.

Direct callers of __netpoll_setup() depend on it to set np->dev,
so we can't simply move that assignment up to netpoll_stup().

Reported-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-05 19:34:44 -04:00
David S. Miller
aa4f069e16 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-queue
Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2016-04-05

This series contains updates to i40e and e1000.

Jesse fixes an issue where code was added by a previous commit but the
flag to enable it was never set.

Alex fixes the e1000 driver from grossly overestimated the descriptors
needed to transmit a frame.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-05 19:31:19 -04:00
Linus Torvalds
541d8f4d59 Miscellaneous bugfixes. ARM and s390 are new from the merge window,
others are usual stable material.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "Miscellaneous bugfixes.

  The ARM and s390 fixes are for new regressions from the merge window,
  others are usual stable material"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  compiler-gcc: disable -ftracer for __noclone functions
  kvm: x86: make lapic hrtimer pinned
  s390/mm/kvm: fix mis-merge in gmap handling
  kvm: set page dirty only if page has been writable
  KVM: x86: reduce default value of halt_poll_ns parameter
  KVM: Hyper-V: do not do hypercall userspace exits if SynIC is disabled
  KVM: x86: Inject pending interrupt even if pending nmi exist
  arm64: KVM: Register CPU notifiers when the kernel runs at HYP
  arm64: kvm: 4.6-rc1: Fix VTCR_EL2 VS setting
2016-04-05 16:16:00 -07:00
Alexander Duyck
a4605fef71 e1000: Double Tx descriptors needed check for 82544
The 82544 has code that adds one additional descriptor per data buffer.
However we weren't taking that into account when determining the descriptors
needed for the next transmit at the end of the xmit_frame path.

This change takes that into account by doubling the number of descriptors
needed for the 82544 so that we can avoid a potential issue where we could
hang the Tx ring by loading frames with xmit_more enabled and then stopping
the ring without writing the tail.

In addition it adds a few more descriptors to account for some additional
workarounds that have been added over time.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-04-05 15:05:51 -07:00
Alexander Duyck
847a1d6796 e1000: Do not overestimate descriptor counts in Tx pre-check
The current code path is capable of grossly overestimating the number of
descriptors needed to transmit a new frame.  This specifically occurs if
the skb contains a number of 4K pages.  The issue is that the logic for
determining the descriptors needed is ((S) >> (X)) + 1.  When X is 12 it
means that we were indicating that we required 2 descriptors for each 4K
page when we only needed one.

This change corrects this by instead adding (1 << (X)) - 1 to the S value
instead of adding 1 after the fact.  This way we get an accurate descriptor
needed count as we are essentially doing a DIV_ROUNDUP().

Reported-by: Ivan Suzdal <isuzdal@mirantis.com>
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-04-05 14:59:05 -07:00
Jesse Brandeburg
8e2cc0e67f i40e: fix errant PCIe bandwidth message
There was an error introduced with commit 3fced53507 ("i40e: X722 is
on the IOSF bus and does not report the PCI bus info"), where code was
added but the enabling flag is never set.

CC: Anjali Singhai Jain <anjali.singhai@intel.com>
CC: Stefan Assman <sassman@redhat.com>
Fixes: 3fced53507 ("i40e: X722 is on the IOSF bus ...")
Reported-by: Steve Best <sbest@redhat.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-04-05 14:52:02 -07:00
Linus Torvalds
5003bc6cc6 spi: Fixes for v4.6
A couple of driver specific fixes here that came in since the merge
 window plus one core fix for locking in cases where a client driver
 grabs a lock on the whole bus for an extended series of operations that
 was introduced by the changes to support accelerated flash operations.
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Merge tag 'spi-fix-v4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "A couple of driver specific fixes here that came in since the merge
  window plus one core fix for locking in cases where a client driver
  grabs a lock on the whole bus for an extended series of operations
  that was introduced by the changes to support accelerated flash
  operations"

* tag 'spi-fix-v4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: rockchip: fix probe deferral handling
  spi: omap2-mcspi: fix dma transfer for vmalloced buffer
  spi: fix possible deadlock between internal bus locks and bus_lock_flag
  spi: imx: Fix possible NULL pointer deref
  spi: imx: only do necessary changes to ECSPIx_CONFIGREG
  spi: rockchip: Spelling s/divsor/divisor/
2016-04-05 13:41:37 -07:00
David Disseldorp
2224d879c7 rbd: use GFP_NOIO consistently for request allocations
As of 5a60e87603, RBD object request
allocations are made via rbd_obj_request_create() with GFP_NOIO.
However, subsequent OSD request allocations in rbd_osd_req_create*()
use GFP_ATOMIC.

With heavy page cache usage (e.g. OSDs running on same host as krbd
client), rbd_osd_req_create() order-1 GFP_ATOMIC allocations have been
observed to fail, where direct reclaim would have allowed GFP_NOIO
allocations to succeed.

Cc: stable@vger.kernel.org # 3.18+
Suggested-by: Vlastimil Babka <vbabka@suse.cz>
Suggested-by: Neil Brown <neilb@suse.com>
Signed-off-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2016-04-05 22:11:37 +02:00
Marcelo Ricardo Leitner
eb8e97715f sctp: use list_* in sctp_list_dequeue
Use list_* helpers in sctp_list_dequeue, more readable.

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-05 15:44:08 -04:00
Marcelo Ricardo Leitner
e43569e6d3 sctp: flush if we can't fit another DATA chunk
There is no point on delaying the packet if we can't fit a single byte
of data on it anymore. So lets just reduce the threshold by the amount
that a data chunk with 4 bytes (rounding) would use.

v2: based on the right tree

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-05 15:39:44 -04:00
Chunming Zhou
7c0ecda15b drm/amdgpu: total vram size also reduces pin size
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
2016-04-05 15:23:31 -04:00
Linus Torvalds
1b5caa3eaa Pin control fixes for the v4.6 series:
- On Super-H PFC (Renesas) controllers: only use dummies on
   legacy systems. This fixes a serious ethernet regression on
   a Renesas board.
 - Pistachio: Fix errors in the pin table.
 - Allwinner SunXi: fix the external interrupts to work.
 - Intel: fix so the high level interrupts start working, and
   fix a spurious interrupt issue.
 - Qualcomm ipq4019: fix the number of GPIOs provided (bump
   to 100), correct register offsets and handle GPIO mode
   properly.
 - Revert the revert on the revert so that Xway has a .to_irq()
   callback again.
 - Minor fixes to errorpaths and debug info.
 - A MAINTAINERS update.
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Merge tag 'pinctrl-v4.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:
 "Here is a set of pin control fixes for the v4.6 series.

  A bit bigger than what I hoped for, but all fixes are confined to
  drivers, a few of them also targeted to stable.

  Summary:

   - On Super-H PFC (Renesas) controllers: only use dummies on legacy
     systems.  This fixes a serious ethernet regression on a Renesas
     board.
   - Pistachio: Fix errors in the pin table.
   - Allwinner SunXi: fix the external interrupts to work.
   - Intel: fix so the high level interrupts start working, and fix a
     spurious interrupt issue.
   - Qualcomm ipq4019: fix the number of GPIOs provided (bump to 100),
     correct register offsets and handle GPIO mode properly.
   - Revert the revert on the revert so that Xway has a .to_irq()
     callback again.
   - Minor fixes to errorpaths and debug info.
   - A MAINTAINERS update"

* tag 'pinctrl-v4.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  Revert "Revert "pinctrl: lantiq: Implement gpio_chip.to_irq""
  pinctrl: qcom: ipq4019: fix register offsets
  pinctrl: qcom: ipq4019: fix the function enum for gpio mode
  pinctrl: qcom: ipq4019: set ngpios to correct value
  pinctrl: nomadik: fix pull debug print inversion
  MAINTAINERS: pinctrl: samsung: Add two new maintainers
  pinctrl: intel: implement gpio_irq_enable
  pinctrl: intel: make the high level interrupt working
  pinctrl: freescale: imx: fix bogus check of of_iomap() return value
  pinctrl: sunxi: Fix A33 external interrupts not working
  pinctrl: pistachio: fix mfio84-89 function description and pinmux.
  pinctrl: sh-pfc: only use dummy states for non-DT platforms
2016-04-05 07:45:29 -07:00
Linus Torvalds
62d2def9a5 media fixes for v4.6-rc2
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Merge tag 'media/v4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:
 "Some bug fixes on au0828 and snd-usb-audio:

   - the au0828+snd-usb-audio MC patch broke several things and produced
     some race conditions.  Better to revert the patches, and re-work on
     them for a next version

   - fix a regression at tuner disable links logic

   - properly handle dev_state as a bitmask"

* tag 'media/v4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  [media] Revert "[media] media: au0828 change to use Managed Media Controller API"
  [media] Revert "[media] sound/usb: Use Media Controller API to share media resources"
  [media] au0828: Fix dev_state handling
  [media] au0828: fix au0828_v4l2_close() dev_state race condition
  [media] media: au0828 fix to clear enable/disable/change source handlers
  [media] v4l2-mc: cleanup a warning
  [media] au0828: disable tuner links and cache tuner/decoder
2016-04-05 06:47:50 -07:00
Robin Murphy
07b48ac4bb iommu/dma: Restore scatterlist offsets correctly
With the change to stashing just the IOVA-page-aligned remainder of the
CPU-page offset rather than the whole thing, the failure path in
__invalidate_sg() also needs tweaking to account for that in the case of
differing page sizes where the two offsets may not be equivalent.
Similarly in __finalise_sg(), lest the architecture-specific wrappers
later get the wrong address for cache maintenance on sync or unmap.

Fixes: 164afb1d85 ("iommu/dma: Use correct offset in map_sg")
Reported-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Cc: stable@ver.kernel.org # v4.4+
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-04-05 15:14:05 +02:00
Paolo Bonzini
95272c2937 compiler-gcc: disable -ftracer for __noclone functions
-ftracer can duplicate asm blocks causing compilation to fail in
noclone functions.  For example, KVM declares a global variable
in an asm like

    asm("2: ... \n
         .pushsection data \n
         .global vmx_return \n
         vmx_return: .long 2b");

and -ftracer causes a double declaration.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Marek <mmarek@suse.cz>
Cc: stable@vger.kernel.org
Cc: kvm@vger.kernel.org
Reported-by: Linda Walsh <lkml@tlinx.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-04-05 14:19:08 +02:00
Luiz Capitulino
61abdbe0bc kvm: x86: make lapic hrtimer pinned
When a vCPU runs on a nohz_full core, the hrtimer used by
the lapic emulation code can be migrated to another core.
When this happens, it's possible to observe milisecond
latency when delivering timer IRQs to KVM guests.

The huge latency is mainly due to the fact that
apic_timer_fn() expects to run during a kvm exit. It
sets KVM_REQ_PENDING_TIMER and let it be handled on kvm
entry. However, if the timer fires on a different core,
we have to wait until the next kvm exit for the guest
to see KVM_REQ_PENDING_TIMER set.

This problem became visible after commit 9642d18ee. This
commit changed the timer migration code to always attempt
to migrate timers away from nohz_full cores. While it's
discussable if this is correct/desirable (I don't think
it is), it's clear that the lapic emulation code has
a requirement on firing the hrtimer in the same core
where it was started. This is achieved by making the
hrtimer pinned.

Lastly, note that KVM has code to migrate timers when a
vCPU is scheduled to run in different core. However, this
forced migration may fail. When this happens, we can have
the same problem. If we want 100% correctness, we'll have
to modify apic_timer_fn() to cause a kvm exit when it runs
on a different core than the vCPU. Not sure if this is
possible.

Here's a reproducer for the issue being fixed:

 1. Set all cores but core0 to be nohz_full cores
 2. Start a guest with a single vCPU
 3. Trace apic_timer_fn() and kvm_inject_apic_timer_irqs()

You'll see that apic_timer_fn() will run in core0 while
kvm_inject_apic_timer_irqs() runs in a different core. If
you get both on core0, try running a program that takes 100%
of the CPU and pin it to core0 to force the vCPU out.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-04-05 14:19:08 +02:00
Christian Borntraeger
9c650d09a9 s390/mm/kvm: fix mis-merge in gmap handling
commit 1e133ab296 ("s390/mm: split arch/s390/mm/pgtable.c") dropped
some changes from commit a3a92c31bf ("KVM: s390: fix mismatch
between user and in-kernel guest limit") - this breaks KVM for some
memory sizes (kvm-s390: failed to commit memory region) like
exactly 2GB.

Cc: Dominik Dingel <dingel@linux.vnet.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-04-05 14:19:07 +02:00
Arnd Bergmann
b70bb98448 iommu: provide of_xlate pointer unconditionally
iommu drivers that support the standard DT bindings use a of_xlate
callback pointer, but that is only part of struct iommu_ops when
CONFIG_OF_IOMMU is enabled, leading to build errors in randconfig
builds when that is not provided:

drivers/iommu/mtk_iommu.c:497:2: error: unknown field 'of_xlate' specified in initializer
  .of_xlate = mtk_iommu_of_xlate,
  ^
drivers/iommu/mtk_iommu.c:497:14: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
  .of_xlate = mtk_iommu_of_xlate,
              ^~~~~~~~~~~~~~~~~~
drivers/iommu/mtk_iommu.c:497:14: note: (near initialization for 'mtk_iommu_ops.domain_get_attr')

We can work around it by adding more #ifdefs in each driver, but
it seems nicer to just allow setting the pointer even if it is
unused. This makes the driver code look nicer, and it gives better
compile-time coverage when test building on other architectures.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 0df4fabe20 ("iommu/mediatek: Add mt8173 IOMMU driver")
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2016-04-05 13:25:12 +02:00
James Bottomley
6ea7e3873e Merge branch 'fixes-base' into fixes 2016-04-05 06:56:47 -04:00
Hannes Reinecke
5ddfe0858e scsi: Do not attach VPD to devices that don't support it
The patch "scsi: rescan VPD attributes" introduced a regression in which
devices that don't support VPD were being scanned for VPD attributes
anyway.  This could cause issues for some devices and should be avoided
so the check for scsi_level has been moved out of scsi_add_lun and into
scsi_attach_vpd so that all callers will not scan VPD for devices that
don't support it.

[mkp: Merge fix]

Fixes: 09e2b0b146 ("scsi: rescan VPD attributes")
Cc: <stable@vger.kernel.org> #v4.5+
Suggested-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-04-05 06:56:40 -04:00
Adrian Hunter
01d6b2a40a mmc: sdhci-pci: Add support and PCI IDs for more Broxton host controllers
Add support and PCI IDs for more Broxton host controllers

Other BXT IDs were added in v4.4 so cc'ing stable. This patch
is dependent on commit 163cbe31e5 ("mmc: sdhci-pci: Fix card
detect race for Intel BXT/APL") but that is already in stable
since v4.4.4.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v4.4+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-04-05 12:14:09 +02:00
Emmanuel Grumbach
f6d4671a08 mac80211: close the SP when we enqueue frames during the SP
Since we enqueued the frame that was supposed to be sent
during the SP, and that frame may very well cary the
IEEE80211_TX_STATUS_EOSP bit, we may never close the SP
(WLAN_STA_SP will never be cleared). If that happens, we
will not open any new SP and will never respond to any poll
frame from the client.
Clear WLAN_STA_SP manually if a frame that was polled during
the SP is queued because of a starting A-MPDU session. The
client may not see the EOSP bit, but it will at least be
able to poll new frames in another SP.

Reported-by: Alesya Shapira <alesya.shapira@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
[remove erroneous comment]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 11:33:49 +02:00
Ilan Peer
4b559ec0bf mac80211: Fix BW upgrade for TDLS peers
It is possible that the station is connected to an AP
with bandwidth of 80+80MHz or 160MHz. In such cases
there is no need to perform an upgrade as the maximal
supported bandwidth is 80MHz.

In addition, when upgrading and setting center_freq1
and bandwidth to 80MHz also set center_freq2 to 0.

Fixes: 0fabfaafec ("mac80211: upgrade BW of TDLS peers when possible"
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 11:26:33 +02:00
Emmanuel Grumbach
facde7f332 mac80211: don't send deferred frames outside the SP
Frames that are sent between
ampdu_action(IEEE80211_AMPDU_TX_START) and the move to the
HT_AGG_STATE_OPERATIONAL state are buffered.
If we try to start an A-MPDU session while the peer is
sleeping and polling frames with U-APSD, we may have frames
that will be buffered by ieee80211_tx_prep_agg. These frames
have IEEE80211_TX_CTL_NO_PS_BUFFER set since they are sent to
a sleeping client and possibly IEEE80211_TX_STATUS_EOSP.
If the frame is buffered, we need clear these two flags
since they will be re-sent after the move to
HT_AGG_STATE_OPERATIONAL state which is very likely to
happen after the SP ends.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 11:16:50 +02:00
Luis de Bethencourt
c2d45923e3 mac80211: remove description of dropped member
Commit 976bd9efda ("mac80211: move beacon_loss_count into ifmgd")
removed the member from the sta_info struct but the description stayed
lingering. Remove it.

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 11:12:09 +02:00
Luis de Bethencourt
84ea3a18c0 mac80211: add doc for RX_FLAG_DUP_VALIDATED flag
Add documentation for the flag for duplication check.

Fixes the following warning when running make htmldocs:
warning: Enum value 'RX_FLAG_DUP_VALIDATED' not described in enum 'mac80211_rx_flags'

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
[fix description]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 11:10:59 +02:00
Ben Greear
b6bf8c688e mac80211: ensure no limits on station rhashtable
By default, the rhashtable logic will fail to insert
objects if the key-chains are too long and un-balanced.

In the degenerate case where mac80211 is creating many
virtual interfaces connected to the same peer(s), this
case can happen.

St insecure_elasticity to true to allow chains to grow
as long as needed.

Signed-off-by: Ben Greear <greearb@candelatech.com>
[remove message, change commit message slightly]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 11:06:58 +02:00
Johannes Berg
62b14b241c mac80211: properly deal with station hashtable insert errors
The original hand-implemented hash-table in mac80211 couldn't result
in insertion errors, and while converting to rhashtable I evidently
forgot to check the errors.

This surfaced now only because Ben is adding many identical keys and
that resulted in hidden insertion errors.

Cc: stable@vger.kernel.org
Fixes: 7bedd0cfad ("mac80211: use rhashtable for station table")
Reported-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:58:30 +02:00
Arik Nemtsov
aa507a7bc5 mac80211: recalc min_def chanctx even when chandef is identical
The min_def chanctx is affected not only by the current chandef, but
sometimes also by other stations on the vif. There's a valid scenario
where a TDLS peer can widen its BW, thereby causing the min_def
to increase.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:51:08 +02:00
Arik Nemtsov
59021c6759 mac80211: TDLS: change BW calculation for WIDER_BW peers
The previous approach simply ignored chandef restrictions when calculating
the appropriate peer BW for a WIDER_BW peer. This could result in a
regulatory violation if both peers indicated 80MHz support, but the
regdomain forbade it.

Change the approach to setting a WIDER_BW peer's BW. Don't exempt it from
the chandef width at first. If during TDLS negotiation the chandef width
is upgraded, update the peer's BW to match.

Fixes: 0fabfaafec ("mac80211: upgrade BW of TDLS peers when possible")
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:50:52 +02:00
Arik Nemtsov
db8d99774c mac80211: TDLS: always downgrade invalid chandefs
Even if the current chandef width is equal to the station's max-BW, it
doesn't mean it's a valid width for TDLS. Make sure to always check
regulatory constraints in these cases.

Fixes: 0fabfaafec ("mac80211: upgrade BW of TDLS peers when possible")
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:50:32 +02:00
Felix Fietkau
c3732a7b37 mac80211: fix AP buffered multicast frames with queue control and txq
Buffered multicast frames must be passed to the driver directly via
drv_tx instead of going through the txq, otherwise they cannot easily be
scheduled to be sent after DTIM.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:50:17 +02:00
Krzysztof Kozlowski
8fd2910e31 PM / runtime: Document steps for device removal
Put a reminder that during device removal drivers should revert all PM
runtime changes from the probe.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-05 03:46:59 +02:00
Srinivas Pandruvada
462d8083fb powercap: intel_rapl: Add missing Haswell model
Added missing model 0x46.

Tested-and-reported-by: Piotr Maksymiuk <piotr.maksymiuk@movishell.pl>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-05 03:44:48 +02:00
Viresh Kumar
b318556479 cpufreq: dt: Drop stale comment
The comment in file header doesn't hold true anymore, drop it.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-05 03:40:44 +02:00
Srinivas Pandruvada
13ad7701f9 cpufreq: intel_pstate: Documenation for structures
No code change. Only added kernel doc style comments for structures.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-05 03:39:05 +02:00
Srinivas Pandruvada
30a3915385 cpufreq: intel_pstate: fix inconsistency in setting policy limits
When user sets performance policy using cpufreq interface, it is possible
that because of policy->max limits, the actual performance is still
limited. But the current implementation will silently switch the
policy to powersave and start using powersave limits. If user modifies
any limits using intel_pstate sysfs, this is actually changing powersave
limits.

The current implementation tracks limits under powersave and performance
policy using two different variables. When policy->max is less than
policy->cpuinfo.max_freq, only powersave limit variable is used.

This fix causes the performance limits variable to be used always when
the policy is performance.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-05 03:37:13 +02:00
Linus Torvalds
1e1e5ce78f linux-kselftest-4.6-rc3
This update for Kselftest contains seccomp fixes
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Merge tag 'linux-kselftest-4.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fixes from Shuah Khan:
 "This update for Kselftest contains seccomp fixes"

* tag 'linux-kselftest-4.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftest/seccomp: Fix the seccomp(2) signature
  selftest/seccomp: Fix the flag name SECCOMP_FILTER_FLAG_TSYNC
2016-04-04 16:56:49 -07:00
Linus Torvalds
c3b1feb024 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
 "This is the first round of MIPS fixes for 4.6:

   - Fix spelling mistakes all over arch/mips
   - Provide __bswapsi2 so XZ kernel compression will build with older GCC
   - ATH79 clock fixes.
   - Fix clock-rated copy-paste erros in ATH79 DTS.
   - Fix gisb-arb compatible string for 7435 BMIPS
   - Enable NAND and UBIFS support in CI20.
   - Fix BUG() assertion caused by inapropriate smp_processor_id() use.
   - Fix exception handling issues for the sake of debuggers
   - Fix the last remaining instance of irq_to_gpio in the db1xxx_ss PCMCIA code
   - Fix MSA unaligned load failures
   - Panic if kernel is configured for a not TLB-supported page size
   - Bail out on unsupported relocs in modules.
   - Partial fix for Qemu breakage after recent IPI rewrite
   - Wire up the preadv2 and pwrite2 syscalls
   - Fix the ar724x clock calculation"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: traps.c: Verify the ISA for microMIPS RDHWR emulation
  MIPS: BMIPS: Fix gisb-arb compatible string for 7435
  MIPS: Bail on unsupported module relocs
  MIPS: dts: qca: ar9132_tl_wr1043nd_v1.dts: use "ref" for reference clock name
  MIPS: ath79: Fix the ar913x reference clock rate
  MIPS: ath79: Fix the ar724x clock calculation
  dt-bindings: clock: qca,ath79-pll: fix copy-paste typos
  MIPS: traps: Correct the SIGTRAP debug ABI in `do_watch' and `do_trap_or_bp'
  FIRMWARE: Broadcom: Fix grammar of warning messages in bcm47xx_sprom.c.
  MIPS: ci20: Enable NAND and UBIFS support in defconfig.
  MIPS: Fix misspellings in comments.
  MIPS: tlb-r4k: panic if the MMU doesn't support PAGE_SIZE
  MIPS: zboot: Remove copied source files on clean
  MIPS: zboot: Fix the build with XZ compression on older GCC versions
  MIPS: Wire up preadv2 and pwrite2 syscalls.
  MIPS: cpu_name_string: Use raw_smp_processor_id().
  pcmcia: db1xxx_ss: fix last irq_to_gpio user
  MIPS: Fix MSA ld unaligned failure cases
  MIPS: Fix broken malta qemu
2016-04-04 16:53:26 -07:00
Linus Torvalds
93e2aeaca5 xen: regression and bug fixes for 4.6-rc2
- Safely migrate event channels between CPUs.
 - Fix CPU hotplug.
 - Maintainer changes.
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Merge tag 'for-linus-4.6-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fixes from David Vrabel:
 "Regression and bug fixes for 4.6-rc2:

   - safely migrate event channels between CPUs
   - fix CPU hotplug
   - maintainer changes"

* tag 'for-linus-4.6-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  MAINTAINERS: xen: Konrad to step down and Juergen to pick up
  xen/events: Mask a moving irq
  Xen on ARM and ARM64: update MAINTAINERS info
  xen/x86: Call cpu_startup_entry(CPUHP_AP_ONLINE_IDLE) from xen_play_dead()
  xen/apic: Provide Xen-specific version of cpu_present_to_apicid APIC op
2016-04-04 16:38:36 -07:00
Rex Zhu
9162823145 drm/amd/powerplay: add uvd/vce dpm enabling flag default.
These should be set by default otherwise the UVD/VCE performance
won't be optimal.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-04-04 17:05:54 -04:00
Rex Zhu
0168f78fe1 drm/amd/powerplay: fix issue that resume back, dpm can't work on FIJI.
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-04-04 17:05:29 -04:00
Leo Liu
d23be4e34c drm/amdgpu: save and restore the firwmware cache part when suspend resume
Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-04-04 17:01:00 -04:00
Leo Liu
3f99dd814a drm/amdgpu: save and restore UVD context with suspend and resume
and revert fix following it accordingly

Revert "drm/amdgpu: stop trying to suspend UVD sessions v2"
Revert "drm/amdgpu: fix the UVD suspend sequence order"

Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-04-04 17:00:50 -04:00