From: Ido Yariv <ido@wizery.com>
Date: Tue, 1 Mar 2011 13:14:43 +0000 (+0200)
Subject: wl12xx: Avoid redundant TX work
X-Git-Tag: v2.6.39-rc1~468^2~88^2^2~47^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b07d4037051318d47c055384ef887535a0ed2d1e;p=pandora-kernel.git

wl12xx: Avoid redundant TX work

TX might be handled in the threaded IRQ handler, in which case, TX work
might be scheduled just to discover it has nothing to do.

Save a few context switches by cancelling redundant TX work in case TX
is about to be handled in the threaded IRQ handler. Also, avoid
scheduling TX work from wl1271_op_tx if not needed.

Signed-off-by: Ido Yariv <ido@wizery.com>
Reviewed-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
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