tree 0067c12e2014b4e4aa58ca6204236618515b3d79
parent 50a66d7f04adbfab9db55144c58dc693358cb635
author Luciano Coelho <coelho@ti.com> 1306499688 +0300
committer John W. Linville <linville@tuxdriver.com> 1306867646 -0400

wl12xx: fix oops in sched_scan when forcing a passive scan

Fix kernel oops when trying to use passive scheduled scans.  The
reason was that in passive scans there are no SSIDs, so there was a
NULL pointer dereference.

To solve the problem, we now check the number of SSIDs provided in the
sched_scan request and only access the list if there's one or more
(ie. passive scan is not forced).  We also force all the channels to
be passive by adding the IEEE80211_CHAN_PASSIVE_SCAN flag locally
before the checks in the wl1271_scan_get_sched_scan_channels()
function.

Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>