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mac80211: only cancel software-based scans on suspend

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Otherwise the hardware scan handler could access an invalid scan request
structure.  The driver should cancel any pending hardware scans during
the suspend process anyway, so also add a warning if the hardware scan
is still pending when the device resumes.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
John W. Linville
2010-09-01 16:12:28 -04:00
parent 18145c6934
commit 85f72bc839
2 changed files with 8 additions and 1 deletions
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3
net/mac80211/pm.c
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@@ -12,7 +12,8 @@ int __ieee80211_suspend(struct ieee80211_hw *hw)
struct ieee80211_sub_if_data *sdata;
struct sta_info *sta;
ieee80211_scan_cancel(local);
if (unlikely(test_bit(SCAN_SW_SCANNING, &local->scanning)))
ieee80211_scan_cancel(local);
ieee80211_stop_queues_by_reason(hw,
IEEE80211_QUEUE_STOP_REASON_SUSPEND);