From: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Date: Tue, 15 Oct 2013 00:42:10 +0000 (-0700)
Subject: ath9k: check for NULL rate when using ieee80211_get_rts_cts_rate()
X-Git-Tag: v6.6-pxa1908~24370^2~55^2^2~36
X-Git-Url: https://git.dujemihanovic.xyz/?a=commitdiff_plain;h=09b029b6b68daa4b961841173d90f267cee9c117;p=linux.git

ath9k: check for NULL rate when using ieee80211_get_rts_cts_rate()

ieee80211_get_rts_cts_rate() can return NULL, so don't rely
on its members when it does return NULL.

Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index fc76052c0721..6bcf62fd3da8 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -2006,6 +2006,9 @@ static void setup_frame_info(struct ieee80211_hw *hw,
 		fi->keyix = ATH9K_TXKEYIX_INVALID;
 	fi->keytype = keytype;
 	fi->framelen = framelen;
+
+	if (!rate)
+		return;
 	fi->rtscts_rate = rate->hw_value;
 	if (short_preamble)
 		fi->rtscts_rate |= rate->hw_value_short;