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authorStanislaw Gruszka <sgruszka@redhat.com>2010-07-29 11:37:41 +0200
committerJohn W. Linville <linville@tuxdriver.com>2010-07-29 12:55:00 -0400
commitd28232b461b8d54b09e59325dbac8b0913ce2049 (patch)
tree86b9fbd210d63f60056f9d8fb6b4dc5ded6a40d2 /init
parent16345910d927556878a82621ebb9a7bcad13e8d8 (diff)
iwlwifi: fix scan abort
Fix possible double priv->mutex lock introduced by commit a69b03e941abae00380fc6bc1877fb797a1b31e6 "iwlwifi: cancel scan watchdog in iwl_bg_abort_scan" . We can not call cancel_delayed_work_sync(&priv->scan_check) with priv->mutex locked because workqueue function iwl_bg_scan_check() take that lock internally. We do not need to synchronize when canceling priv->scan_check work. We can avoid races (sending double abort command or send no command at all) using STATUS_SCAN_ABORT bit. Moreover current iwl_bg_scan_check() code seems to be broken, as we should not send abort commands when currently aborting. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> CC: stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'init')
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