mac80211: fix an oops in ieee80211_scan_state_set_channel

Fix an oops in ieee80211_scan_state_set_channel which was triggered
if the last scanned channel was skipped (for example due to regulatory
restrictions) by returning to the decision state after each skipped
channel.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index b376775e722f..147772a2977c 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -605,8 +605,11 @@ static void ieee80211_scan_state_set_channel(struct ieee80211_local *local,
         /* advance state machine to next channel/band */
         local->scan_channel_idx++;
 
-        if (skip)
+        if (skip) {
+                /* if we skip this channel return to the decision state */
+                local->next_scan_state = SCAN_DECISION;
                 return;
+        }
 
         /*
          * Probe delay is used to update the NAV, cf. 11.1.3.2.2