| commit | 73033c987a8bd0b080509063bb7c130b8941ad73 | |
| author | Dmitry Tarnyagin <dmitry.tarnyagin@stericsson.com> | |
| Thu, 13 Oct 2011 11:29:24 +0000 (13 11:29 +0000) | ||
| committer | David S. Miller <davem@davemloft.net> | |
| Wed, 19 Oct 2011 07:25:41 +0000 (19 03:25 -0400) | ||
| tree | 3fc3b0f7160c9f9659eed18721b6770468def367 | treesnapshot (tar.gz zip) |
| parent | fe47f1250805438fa06580c9ce6d37bc4bc595d2 | commitdiff |
caif-hsi: Fix for wakeup condition problem
Under stressed conditions a race could happen when del_timer_sync() was called
from softirq context at the same time when mod_timer_pending() for the same
timer was called from the workqueue. This leaded to a state mismatch in the
CAIF HSI driver and following unexpected link wakeup procedure.
The fix puts del_timer_sync() and mod_timer_pending() calls under a spin lock
to protect against the race condition.
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Under stressed conditions a race could happen when del_timer_sync() was called
from softirq context at the same time when mod_timer_pending() for the same
timer was called from the workqueue. This leaded to a state mismatch in the
CAIF HSI driver and following unexpected link wakeup procedure.
The fix puts del_timer_sync() and mod_timer_pending() calls under a spin lock
to protect against the race condition.
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| drivers/net/caif/caif_hsi.c | diffblobblamehistory |