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libertas: fix potential NULL-pointer dereference

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The code wants to check if there's a channel and it is not disabled,
but it used to check if channel is not NULL and accessed the channel
struct if this check failed.

Signed-off-by: Sven Neumann <s.neumann@raumfeld.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sven Neumann 2010-12-09 09:38:36 +01:00 committed by John W. Linville
parent 10c38c3306
commit 4a55d5852a
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/libertas/cfg.c
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@ -619,7 +619,7 @@ static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
print_ssid(ssid_buf, ssid, ssid_len),
LBS_SCAN_RSSI_TO_MBM(rssi)/100);
if (channel ||
if (channel &&
!(channel->flags & IEEE80211_CHAN_DISABLED))
cfg80211_inform_bss(wiphy, channel,
bssid, le64_to_cpu(*(__le64 *)tsfdesc),