From: Christian Lamparter <chunkeey@googlemail.com>
To: "linux-wireless" <linux-wireless@vger.kernel.org>
Cc: "John W. Linville" <linville@tuxdriver.com>,
"Michael Büsch" <mb@bu3sch.de>
Subject: [PATCH] p54: fix tx feedback status flag check
Date: Tue, 24 Aug 2010 22:54:05 +0200 [thread overview]
Message-ID: <201008242254.05559.chunkeey@googlemail.com> (raw)
Michael reported that p54* never really entered power
save mode, even tough it was enabled.
It turned out that upon a power save mode change the
firmware will set a special flag onto the last outgoing
frame tx status (which in this case is almost always the
designated PSM nullfunc frame). This flag confused the
driver; It erroneously reported transmission failures
to the stack, which then generated the next nullfunc.
and so on...
Cc: <stable@kernel.org>
Reported-by: Michael Buesch <mb@bu3sch.de>
Tested-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
---
diff --git a/drivers/net/wireless/p54/txrx.c b/drivers/net/wireless/p54/txrx.c
index 34447d1..1dc0dbf 100644
--- a/drivers/net/wireless/p54/txrx.c
+++ b/drivers/net/wireless/p54/txrx.c
@@ -446,7 +446,7 @@ static void p54_rx_frame_sent(struct p54_common *priv, struct sk_buff *skb)
}
if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
- (!payload->status))
+ !(payload->status & P54_TX_FAILED))
info->flags |= IEEE80211_TX_STAT_ACK;
if (payload->status & P54_TX_PSM_CANCELLED)
info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
reply other threads:[~2010-08-24 20:54 UTC|newest]
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