From: Mike Christie <michaelc@cs.wisc.edu>
Date: Tue, 21 Apr 2009 20:32:34 +0000 (-0500)
Subject: [SCSI] cxgb3i: fix cpu use abuse during writes
X-Git-Tag: v2.6.30-rc5~53^2~28
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1393109f23f8ad753a60a3e461c6caa96d8524f3;p=pandora-kernel.git

[SCSI] cxgb3i: fix cpu use abuse during writes

When doing a lot (128) of large writes (256K) we can hit the cxgb3_snd_win
check pretty easily. The driver's xmit thread then takes 100% of the cpu.

The driver should not be returning -EAGAIN for this problem. It should
be returing -ENOBUFS, then when the window is opened again it should
queue the xmit thread (it already wakes the xmit thread).

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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