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| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2013-09-16 11:12:07 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-11-13 12:05:30 +0900 |
| commit | 715a606d73f63e94259e6251565e6e12e3271d0f (patch) | |
| tree | 2d8dd2d9ff41caf6aa7820b60605bc3aa592baec /net/mac80211/ieee80211_i.h | |
| parent | 5be794dc4bb66266acc91eb589ace48e82a6c77e (diff) | |
| download | linux-3.10-715a606d73f63e94259e6251565e6e12e3271d0f.tar.gz linux-3.10-715a606d73f63e94259e6251565e6e12e3271d0f.tar.bz2 linux-3.10-715a606d73f63e94259e6251565e6e12e3271d0f.zip | |
mac80211: correctly close cancelled scans
commit a754055a1296fcbe6f32de3a5eaca6efb2fd1865 upstream.
__ieee80211_scan_completed is called from a worker. This
means that the following flow is possible.
* driver calls ieee80211_scan_completed
* mac80211 cancels the scan (that is already complete)
* __ieee80211_scan_completed runs
When scan_work will finally run, it will see that the scan
hasn't been aborted and might even trigger another scan on
another band. This leads to a situation where cfg80211's
scan is not done and no further scan can be issued.
Fix this by setting a new flag when a HW scan is being
cancelled so that no other scan will be triggered.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/mac80211/ieee80211_i.h')
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 9ca8e3278cc..92ef04c72c5 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -842,6 +842,8 @@ struct tpt_led_trigger { * that the scan completed. * @SCAN_ABORTED: Set for our scan work function when the driver reported * a scan complete for an aborted scan. + * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being + * cancelled. */ enum { SCAN_SW_SCANNING, @@ -849,6 +851,7 @@ enum { SCAN_ONCHANNEL_SCANNING, SCAN_COMPLETED, SCAN_ABORTED, + SCAN_HW_CANCELLED, }; /** |