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authorJohannes Berg <johannes.berg@intel.com>2016-12-01 16:25:30 +0100
committerLuca Coelho <luciano.coelho@intel.com>2017-02-03 16:26:43 +0200
commit6ea29ce5749687d125d56b6748fa68eee1791f6e (patch)
tree9006af6866db0d05b1d64a2f1aa3640646e0d237 /sound/ppc/pmac.c
parentcba84570a0eb8826bcd69627fd975935bdcf7eaf (diff)
iwlwifi: mvm: set AID to firmware only for associated stations
The firmware will soon actually look at the AID field, and when it does that it'll try to ensure that the AID is never changing. Due to the way the station is added, it may start with an invalid AID before it's associated, so to ensure a constant AID (once it becomes non-zero), track the station state and set the AID only when the station is associated and when it disassociates. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'sound/ppc/pmac.c')
0 files changed, 0 insertions, 0 deletions
bdev_set_par+0x18/0x70 [i915] fb_set_var+0x236/0x460 fbcon_blank+0x30f/0x350 do_unblank_screen+0xd2/0x1a0 vt_ioctl+0x507/0x12a0 tty_ioctl+0x355/0xc30 do_vfs_ioctl+0xa3/0x5e0 SyS_ioctl+0x79/0x90 entry_SYSCALL_64_fastpath+0x13/0x94 - i915 unpin_work workqueue: intel_unpin_work_fn+0x58/0x140 [i915] process_one_work+0x1f1/0x480 worker_thread+0x48/0x4d0 kthread+0x101/0x140 and this patch purely papers over the issue by adding a NULL pointer check and a WARN_ON_ONCE() to avoid the oops that would then generally make the machine unresponsive. Other callers of i915_gem_object_to_ggtt() seem to also check for the returned pointer being NULL and warn about it, so this clearly has happened before in other places. [ Reported it originally to the i915 developers on Jan 8, applying the ugly workaround on my own now after triggering the problem for the second time with no feedback. This is likely to be the same bug reported as https://bugs.freedesktop.org/show_bug.cgi?id=98829 https://bugs.freedesktop.org/show_bug.cgi?id=99134 which has a patch for the underlying problem, but it hasn't gotten to me, so I'm applying the workaround. ] Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Imre Deak <imre.deak@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/usb/class/usblp.c')