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From: Christian Lamparter <chunkeey@googlemail.com>
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>
---
---
drivers/net/wireless/p54/txrx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- compat-wireless-2010-07-29.orig/drivers/net/wireless/p54/txrx.c
+++ compat-wireless-2010-07-29/drivers/net/wireless/p54/txrx.c
@@ -446,7 +446,7 @@ static void p54_rx_frame_sent(struct p54
}
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;
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