From: Stanislaw Gruszka <sgruszka@redhat.com>
Date: Mon, 19 Mar 2012 14:59:41 +0000 (+0100)
Subject: rt2x00: rt2800usb: fix status register reread logic
X-Git-Tag: v3.4-rc2~37^2~30^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4e808a38fdcaeeeddbc05942623279ebe7c02373;p=pandora-kernel.git

rt2x00: rt2800usb: fix status register reread logic

Another good catch from Jakub Kicinski. This patch fixes my
recent commit: ed61e2b02027935520d1be884fac0b2ffce8379a
"rt2x00: rt2800usb: rework txdone code"

We should reread status register only when nobody else start already
reading status i.e. test_and_set_bit(TX_STATUS_READING, flags) return 0.

Reported-by: Jakub Kicinski <moorray@wp.pl>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

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