From: Arend van Spriel <[email protected]>
Date: Thu, 9 Feb 2012 21:08:58 +0100
commit 5e379203c7788b7af01150bfadbc74d2797a2ef4 upstream.
The A-MPDU code checked against a retry limit, but it was using
the wrong variable to do so. This patch fixes this to assure
proper retry mechanism.
This problem had a side-effect causing the mac80211 flush callback
to remain waiting forever as well. That side effect has been fixed
by commit by Stanislaw Gruszka:
commit f96b08a7e6f69c0f0a576554df3df5b1b519c479
Date: Tue Jan 17 12:38:50 2012 +0100
brcmsmac: fix tx queue flush infinite loop
Reference:
https://bugzilla.kernel.org/show_bug.cgi?id=42576
Cc: Stanislaw Gruszka <[email protected]>
Reviewed-by: Pieter-Paul Giesberts <[email protected]>
Reviewed-by: Alwin Beukers <[email protected]>
Signed-off-by: Arend van Spriel <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
Signed-off-by: Jonathan Nieder <[email protected]>
---
Hi Ben and Greg,
Please consider
5e379203c778 brcm80211: smac: fix endless retry of A-MPDU
transmissions
for application to the 3.2.y and 3.3.y stable trees. It is the real
fix to the bug worked around by f96b08a7e6f6 (brcmsmac: fix tx queue
flush infinite loop, 2012-01-17). The remaining symptom after that
workaround was an assertion failure (WARNING at
drivers/net/wireless/brcm80211/brcmsmac/main.c:8241).
Touko Korpela (cc-ed) tested the patch against 3.2.17 + "brcm80211:
smac: pass missing argument to 'brcms_b_mute'" and found it to
work[1]:
> Patch works, warning is gone after couple of hours of use. I let you
> know if situation changes.
Thanks,
Jonathan
[1] http://bugs.debian.org/672891
drivers/net/wireless/brcm80211/brcmsmac/ampdu.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/drivers/net/wireless/brcm80211/brcmsmac/ampdu.c
b/drivers/net/wireless/brcm80211/brcmsmac/ampdu.c
index 7f27dbdb6b60..051586275f14 100644
--- a/drivers/net/wireless/brcm80211/brcmsmac/ampdu.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/ampdu.c
@@ -1053,17 +1053,13 @@ brcms_c_ampdu_dotxstatus_complete(struct ampdu_info
*ampdu, struct scb *scb,
}
/* either retransmit or send bar if ack not recd */
if (!ack_recd) {
- struct ieee80211_tx_rate *txrate =
- tx_info->status.rates;
- if (retry && (txrate[0].count < (int)retry_limit)) {
+ if (retry && (ini->txretry[index] < (int)retry_limit)) {
ini->txretry[index]++;
ini->tx_in_transit--;
/*
* Use high prededence for retransmit to
* give some punch
*/
- /* brcms_c_txq_enq(wlc, scb, p,
- * BRCMS_PRIO_TO_PREC(tid)); */
brcms_c_txq_enq(wlc, scb, p,
BRCMS_PRIO_TO_HI_PREC(tid));
} else {
--
1.7.10.2
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