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wil6210: fix chan check in wil_p2p_listen 

In wil_p2p_listen chan is checked to protect against NULL
pointer access only before setting channel = chan->hw_value.
Add a global parameter check to cover all accesses to chan.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Maya Erez 2016-06-08 20:07:47 +03:00 committed by Kalle Valo
parent deb85bb1da
commit 9c830abe91
1 changed files with 4 additions and 2 deletions
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6
drivers/net/wireless/ath/wil6210/p2p.c
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@ -114,8 +114,10 @@ int wil_p2p_listen(struct wil6210_priv *wil, unsigned int duration,
u8 channel = P2P_DMG_SOCIAL_CHANNEL; u8 channel = P2P_DMG_SOCIAL_CHANNEL;
int rc; int rc;
if (chan) if (!chan)
channel = chan->hw_value; return -EINVAL;
channel = chan->hw_value;
wil_dbg_misc(wil, "%s: duration %d\n", __func__, duration); wil_dbg_misc(wil, "%s: duration %d\n", __func__, duration);