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iwlegacy: add missing null check

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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@cuw.edu>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Greg Dietsche 2011-06-02 22:24:06 -05:00 committed by John W. Linville
parent 5c30c76ee6
commit 0c34861e7c
1 changed files with 3 additions and 0 deletions
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3
drivers/net/wireless/iwlegacy/iwl-4965-rs.c
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@ -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) {