| commit | 890cd1ba9bba495fd7eb8e8cdfea0b016a34bfa6 | |
| author | Stanislaw Gruszka <sgruszka@redhat.com> | |
| Wed, 8 Jun 2011 13:26:31 +0000 (8 15:26 +0200) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Thu, 23 Jun 2011 22:05:41 +0000 (23 15:05 -0700) | ||
| tree | 7c7d279235f7c74a19b960a2080a38eb76e98ac0 | treesnapshot (tar.gz zip) |
| parent | 4d41d0d8666e0bb083224cf1cd49f1c9be55d467 | commitdiff |
iwlegacy: fix channel switch locking
commit 51e65257142a87fe46a1ce5c35c86c5baf012614 upstream.
We use priv->mutex to avoid race conditions between chswitch_done()
and mac_channel_switch(), when marking channel switch in
progress. But chswitch_done() can be called in atomic context
from rx_csa() or with mutex already taken from commit_rxon().
To fix remove mutex from chswitch_done() and use atomic bitops
for marking channel switch pending.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit 51e65257142a87fe46a1ce5c35c86c5baf012614 upstream.
We use priv->mutex to avoid race conditions between chswitch_done()
and mac_channel_switch(), when marking channel switch in
progress. But chswitch_done() can be called in atomic context
from rx_csa() or with mutex already taken from commit_rxon().
To fix remove mutex from chswitch_done() and use atomic bitops
for marking channel switch pending.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>