From: Tejun Heo <htejun@gmail.com>
Date: Mon, 20 Feb 2006 14:48:38 +0000 (+0900)
Subject: [PATCH] libata: fix qc->n_elem == 0 case handling in ata_qc_next_sg
X-Git-Tag: v2.6.16-rc5~67^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cc1887f3d8ae8ea61efa1a75af8ec0467b9dd546;p=pandora-kernel.git

[PATCH] libata: fix qc->n_elem == 0 case handling in ata_qc_next_sg

This patch makes ata_for_each_sg() start with pad_sgent when
qc->n_elem is zero.  Previously, ata_for_each_sg() unconditionally
started with qc->__sg, handling the first sg to fill_sg() routines
even when the entry was invalid.  And while at it, unwind ?: in
ata_qc_next_sg() into if statement.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
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