p54: fix tx feedback status flag check
commit13d7e89ea21d11921cc64729341edb3fbdb70ca9
authorChristian Lamparter <chunkeey@googlemail.com>
Tue, 24 Aug 2010 20:54:05 +0000 (24 22:54 +0200)
committerGreg Kroah-Hartman <gregkh@suse.de>
Mon, 20 Sep 2010 20:36:41 +0000 (20 13:36 -0700)
treeaad6ec05f53f4bf178de9d02cda7a3782d4f26b7
parentf4d60f54ed93f427219b359a1bbc29e2fc04cc67
p54: fix tx feedback status flag check

commit f880c2050f30b23c9b6f80028c09f76e693bf309 upstream.

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...

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/net/wireless/p54/txrx.c