diff options
| author | John W. Linville <linville@tuxdriver.com> | 2010-09-01 16:12:28 -0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-09-01 16:12:28 -0400 |
| commit | 85f72bc839705294b32b6c16b491c0422f0a71b3 (patch) | |
| tree | c2aec95a5b7315cc7e5bff44a28eb26d045d64e5 | |
| parent | 18145c69349f2ab60c470798f83b3a2639e2a8d9 (diff) | |
mac80211: only cancel software-based scans on suspendmaster-2010-09-02
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>
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 6 | ||||
| -rw-r--r-- | net/mac80211/pm.c | 3 |
2 files changed, 8 insertions, 1 deletions
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 16f7fb164c2..4e635e2fabd 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1186,6 +1186,12 @@ int __ieee80211_suspend(struct ieee80211_hw *hw); static inline int __ieee80211_resume(struct ieee80211_hw *hw) { + struct ieee80211_local *local = hw_to_local(hw); + + WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), + "%s: resume with hardware scan still in progress\n", + wiphy_name(hw->wiphy)); + return ieee80211_reconfig(hw_to_local(hw)); } #else diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c index d287fde0431..ce671dfd238 100644 --- a/net/mac80211/pm.c +++ b/net/mac80211/pm.c @@ -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); |