linux-stable.git/drivers/net/wireless/ath, branch v4.2.4

ath10k: wake up queue upon vif creation

2015-10-22T21:49:29+00:00

commit 6d2d51ecfff13f5f6ffc476dccf4d5b2668072eb upstream.

Vif's vdev_id is used as queue number. However due
to the tx pausing design in ath10k it was possible
for a new interface to be created with its tx
queue stopped (via ieee80211_stop_queues). This
could in turn leave the interface inoperable until
ath10k_mac_tx_unlock() was called.

This problem only affected multi-vif scenarios when
new interfaces were created some time later after
other interfaces have been running for some time
and had Tx queue full at some point prior.

Possible manifestation of the bug was
authentication timeout for a client vif.

Fixes: 96d828d45e16 ("ath10k: rework tx queue locking")
Signed-off-by: Michal Kazior 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

ath10k: wake up offchannel queue properly

2015-10-22T21:49:29+00:00

commit 3a73d1a6f22bf13044056543ad43b2a304ee0022 upstream.

Once HTT Tx queue got full offchannel queue was
stopped and never woken up again. This broke, e.g.
P2P. This could be reproduced after running a lot
of traffic enough to saturate 100% of the driver
Tx queue and then trying to send offchannel
traffic.

Fixes: 96d828d45e16 ("ath10k: rework tx queue locking")
Signed-off-by: Michal Kazior 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

ath10k: fix peer limit enforcement

2015-10-22T21:49:28+00:00

commit e04cafbc38c70af2aad3810ce24ab0eba8114779 upstream.

Firmware peer entries are involved in internal
firmware vdev structures. This was not accounted
for and could lead firmware to crash due to asking
it to do more than it could.

Fixes: 039a0051ec1a ("ath10k: allocate fw resources for iface combinations")
Signed-off-by: Michal Kazior 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

ath10k: reject 11b tx fragmentation configuration

2015-10-22T21:49:28+00:00

commit 92092fe528e79c9bd25784ca0ef341d5a1d1b642 upstream.

Even though there's a WMI enum for fragmentation
threshold no known firmware actually implements
it. Moreover it is not possible to rely frame
fragmentation to mac80211 because firmware clears
the "more fragments" bit in frame control making
it impossible for remote devices to reassemble
frames.

Hence implement a dummy callback just to say
fragmentation isn't supported. This effectively
prevents mac80211 from doing frame fragmentation
in software.

This fixes Tx becoming broken after setting
fragmentation threshold.

Fixes: 1010ba4c5d1c ("ath10k: unregister and remove frag_threshold callback")
Signed-off-by: Michal Kazior 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

ath10k: fix per-vif queue locking

2015-10-22T21:49:28+00:00

commit acd0b27bb13a09dd0a56d4562d3eb4137a7318b2 upstream.

Whenever any vdev was supposed to be paused all Tx
queues were stopped (except offchannel) instead of
only these associated with the given vdev.

This caused subtle issues with
multi-channel/multi-vif scenarios, e.g.
authentication of station vif could sometimes fail
depending on fw tx pause request timing.

Fixes: b4aa539dd8f2 ("ath10k: implement tx pause wmi event")
Signed-off-by: Michal Kazior 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

ath10k: fix dma_mapping_error() handling

2015-10-22T21:49:22+00:00

commit 5e55e3cbd1042cffa6249f22c10585e63f8a29bf upstream.

The function returns 1 when DMA mapping fails. The
driver would return bogus values and could
possibly confuse itself if DMA failed.

Fixes: 767d34fc67af ("ath10k: remove DMA mapping wrappers")
Reported-by: Dan Carpenter 
Signed-off-by: Michal Kazior 
Signed-off-by: Kalle Valo 
Signed-off-by: Greg Kroah-Hartman

ath9k_hw: fix device ID check for AR956x

2015-07-11T16:58:56+00:00

Because of the missing return, the macVersion value was being
overwritten with an invalid register read

Signed-off-by: Felix Fietkau 
Signed-off-by: Kalle Valo

Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

2015-07-01T17:49:25+00:00

Pull module updates from Rusty Russell:
 "Main excitement here is Peter Zijlstra's lockless rbtree optimization
  to speed module address lookup.  He found some abusers of the module
  lock doing that too.

  A little bit of parameter work here too; including Dan Streetman's
  breaking up the big param mutex so writing a parameter can load
  another module (yeah, really).  Unfortunately that broke the usual
  suspects, !CONFIG_MODULES and !CONFIG_SYSFS, so those fixes were
  appended too"

* tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: (26 commits)
  modules: only use mod->param_lock if CONFIG_MODULES
  param: fix module param locks when !CONFIG_SYSFS.
  rcu: merge fix for Convert ACCESS_ONCE() to READ_ONCE() and WRITE_ONCE()
  module: add per-module param_lock
  module: make perm const
  params: suppress unused variable error, warn once just in case code changes.
  modules: clarify CONFIG_MODULE_COMPRESS help, suggest 'N'.
  kernel/module.c: avoid ifdefs for sig_enforce declaration
  kernel/workqueue.c: remove ifdefs over wq_power_efficient
  kernel/params.c: export param_ops_bool_enable_only
  kernel/params.c: generalize bool_enable_only
  kernel/module.c: use generic module param operaters for sig_enforce
  kernel/params: constify struct kernel_param_ops uses
  sysfs: tightened sysfs permission checks
  module: Rework module_addr_{min,max}
  module: Use __module_address() for module_address_lookup()
  module: Make the mod_tree stuff conditional on PERF_EVENTS || TRACING
  module: Optimize __module_address() using a latched RB-tree
  rbtree: Implement generic latch_tree
  seqlock: Introduce raw_read_seqcount_latch()
  ...

Merge tag 'wireless-drivers-next-for-davem-2015-06-18' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next

2015-06-23T08:03:18+00:00

Kalle Valo says:

====================
Major changes:

mwifiex:

* enhancements for AP mode: support verbose information in station
  dump command and also information about AP link.
* enable power save by default

brcmfmac:

* fix module reload issue for PCIe
* improving msgbuf protocol for PCIe devices
* rework .get_station() cfg80211 callback operation
* determine interface combinations upon device feature support

ath9k:

* ath9k_htc: add support of channel switch

wil6210:

* add modparam for bcast ring size
* support hidden SSID
* add per-MCS Rx stats
====================

Signed-off-by: David S. Miller

Merge ath-next from ath.git

2015-06-15T10:25:32+00:00

Major changes:

wil6210:

* add modparam for bcast ring size
* support hidden SSID
* add per-MCS Rx stats