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| author | John W. Linville <linville@tuxdriver.com> | 2010-08-30 15:12:02 -0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-08-31 15:20:45 -0400 |
| commit | 18145c69349f2ab60c470798f83b3a2639e2a8d9 (patch) | |
| tree | 459b583796289d587b21eb3390f5a09eb09a52de /net/mac80211/main.c | |
| parent | cd35a3912188d006f251fff1028d84e1d1649ca2 (diff) | |
| download | linux-18145c69349f2ab60c470798f83b3a2639e2a8d9.tar.gz | |
mac80211: cancel scan in ieee80211_restart_hw if software scan pending
This function exists to clean-up after a hardware error or something similar. The restart is accomplished using the same infrastructure used to resume after a suspend. The suspend path cancels running scans, so it seems appropriate to do that here as well for software-based scans. If a hardware-based scan is pending, issue a warning message since this indicates that the drivers has failed to clean-up after itself. Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/main.c')
| -rw-r--r-- | net/mac80211/main.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 93194f61adb0..a06b6ee63c07 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -305,7 +305,13 @@ void ieee80211_restart_hw(struct ieee80211_hw *hw) trace_api_restart_hw(local); - /* use this reason, __ieee80211_resume will unblock it */ + WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), + "%s called with hardware scan in progress\n", __func__); + + if (unlikely(test_bit(SCAN_SW_SCANNING, &local->scanning))) + ieee80211_scan_cancel(local); + + /* use this reason, ieee80211_reconfig will unblock it */ ieee80211_stop_queues_by_reason(hw, IEEE80211_QUEUE_STOP_REASON_SUSPEND); |