From: Christian Lamparter <chunkeey@googlemail.com>
Date: Tue, 24 Aug 2010 20:54:05 +0000 (+0200)
Subject: p54: fix tx feedback status flag check
X-Git-Tag: v2.6.36-rc4~87^2~14^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f880c2050f30b23c9b6f80028c09f76e693bf309;p=pandora-kernel.git

p54: fix tx feedback status flag check

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>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

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