rtlwifi: rtl8192se: Fix regression due to commit 9139fc8

Beginning with kernel 3.13, this driver fails on some systems. The problem
was bisected to:

Commit 9139fc8953df991ce715a0149b87a7e92ea13409
Author: Felix Fietkau <nbd@openwrt.org>
Title: mac80211: send control port protocol frames to the VO queue

There is noting wrong with the above commit. The regression occurs because
V0 queue on RTL8192SE cards uses priority 6, not the usual 7. The fix is to
modify the rtl8192se routine that sets the correct transmit queue.

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=74541

Reported-by: Alex Miller <almiller_1@yahoo.co.uk>
Tested-by: Alex Miller <almiller_1@yahoo.co.uk>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>    [3.13+]
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/rtlwifi/rtl8192se/trx.c b/drivers/net/wireless/rtlwifi/rtl8192se/trx.c
index 36b48be8329c08dad5474f43600f2b11d8fcf279..2b3c78baa9f8b3742020aa377b0449785eeb8ab7 100644 (file)
--- a/drivers/net/wireless/rtlwifi/rtl8192se/trx.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192se/trx.c
@@ -49,6 +49,12 @@ static u8 _rtl92se_map_hwqueue_to_fwqueue(struct sk_buff *skb,       u8 skb_queue)
        if (ieee80211_is_nullfunc(fc))
                return QSLT_HIGH;
 
+       /* Kernel commit 1bf4bbb4024dcdab changed EAPOL packets to use
+        * queue V0 at priority 7; however, the RTL8192SE appears to have
+        * that queue at priority 6
+        */
+       if (skb->priority == 7)
+               return QSLT_VO;
        return skb->priority;
 }