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wifi: rtl8xxxu: Fix use after rcu_read_unlock in rtl8xxxu_bss_info_changed

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Commit a8b5aef2cc ("wifi: rtl8xxxu: gen2: Enable 40 MHz channel width")
introduced a line where the pointer returned by ieee80211_find_sta() is
used after rcu_read_unlock().

Move rcu_read_unlock() a bit lower to fix this.

Fixes: a8b5aef2cc ("wifi: rtl8xxxu: gen2: Enable 40 MHz channel width")
Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/3c82ad09-7593-3be1-1d2c-e58505fb43cb@gmail.com
This commit is contained in:
Bitterblue Smith 2022-11-21 22:56:58 +02:00 committed by Kalle Valo
parent 895b3b06ef
commit 7927afb5e2
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
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@ -4645,7 +4645,6 @@ rtl8xxxu_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
if (sta->deflink.ht_cap.cap &
(IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_SGI_20))
sgi = 1;
rcu_read_unlock();
highest_rate = fls(ramask) - 1;
if (highest_rate < DESC_RATE_MCS0) {
@ -4670,6 +4669,7 @@ rtl8xxxu_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
else
rarpt->txrate.bw = RATE_INFO_BW_20;
}
rcu_read_unlock();
bit_rate = cfg80211_calculate_bitrate(&rarpt->txrate);
rarpt->bit_rate = bit_rate;
rarpt->desc_rate = highest_rate;