From: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Date: Mon, 25 May 2009 20:57:21 +0000 (+0000)
Subject: mlx4_en: Fix a kernel panic when waking tx queue
X-Git-Tag: v2.6.30-rc8~9^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=465440d2720543669841db5b0691ba41892ed0ae;p=pandora-kernel.git

mlx4_en: Fix a kernel panic when waking tx queue

When the transmit queue gets full we enable interrupts for TX completions
There was a race that we handled the TX queue both from the interrupt context
and from the transmit function. Using "spin_trylock_irq()" ensures this
doesn't happen.

Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
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