From: Rajesh K Borundia <rajesh.borundia@qlogic.com>
Date: Thu, 17 Jun 2010 02:56:41 +0000 (+0000)
Subject: qlcnic: fix race in tx stop queue
X-Git-Tag: v2.6.36-rc1~571^2~542
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ef71ff833acfd3795c3af1bb800ac186561508ef;p=pandora-kernel.git

qlcnic: fix race in tx stop queue

There is a race between netif_stop_queue and netif_stopped_queue
check. So check once again if buffers are available to avoid race.
With above logic we can also get rid of tx lock in process_cmd_ring.

Signed-off-by: Rajesh K Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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