From: Jeff Garzik <jeff@garzik.org>
Date: Wed, 22 Mar 2006 02:31:22 +0000 (-0500)
Subject: [libata] fix oops on non-DMA bmdma hardware
X-Git-Tag: v2.6.17-rc1~1133
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4d4681f6b994baf93dff0e4f59ab4fe38b49ef13;p=pandora-kernel.git

[libata] fix oops on non-DMA bmdma hardware

Alan noted: "bmdma may be zero but the bmdma_irq_clear function gets
called even in this case during pure PIO operation. Check we have a
bmdma before we use it."

I fixed this by adding a check for zero.  While was I there, I fixed the
non-standard indentation of the small function's code.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
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