commit cc1887f3d8ae8ea61efa1a75af8ec0467b9dd546
author Tejun Heo <htejun@gmail.com> Mon Feb 20 23:48:38 2006 +0900
committer Jeff Garzik <jgarzik@pobox.com> Mon Feb 20 16:48:18 2006 -0500
tree 3d02d3dfef8803fe9130ebac2172b6271b907109
parent 9ae61c6cb69f5251d160576c324948805f97e901

[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>