linux-kernel - [PATCH 5/5 v2] iwlegacy: add missing null check

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Message-Id: <1307071446-28730-1-git-send-email-Gregory.Dietsche@cuw.edu>
Date:	Thu,  2 Jun 2011 22:24:06 -0500
From:	Greg Dietsche <Gregory.Dietsche@....edu>
To:	sgruszka@...hat.com, linville@...driver.com
Cc:	kernel-janitors@...r.kernel.org, linux-wireless@...r.kernel.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Greg Dietsche <Gregory.Dietsche@....edu>
Subject: [PATCH 5/5 v2] iwlegacy: add missing null check

lq_sta has other null checks in this function.
assuming they are correct, this additional null check
should be added too.

Incorporating suggestion from Gustavo Padovan.

Signed-off-by: Greg Dietsche <Gregory.Dietsche@....edu>
---
 drivers/net/wireless/iwlegacy/iwl-4965-rs.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/net/wireless/iwlegacy/iwl-4965-rs.c b/drivers/net/wireless/iwlegacy/iwl-4965-rs.c
index 24d1499..9b65153 100644
--- a/drivers/net/wireless/iwlegacy/iwl-4965-rs.c
+++ b/drivers/net/wireless/iwlegacy/iwl-4965-rs.c
@@ -2275,6 +2275,9 @@ iwl4965_rs_get_rate(void *priv_r, struct ieee80211_sta *sta, void *priv_sta,
 	if (rate_control_send_low(sta, priv_sta, txrc))
 		return;
 
+	if (!lq_sta)
+		return;
+
 	rate_idx  = lq_sta->last_txrate_idx;
 
 	if (lq_sta->last_rate_n_flags & RATE_MCS_HT_MSK) {
-- 
1.7.2.5

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