From: Tejun Heo <htejun@gmail.com>
Date: Mon, 20 Feb 2006 14:48:37 +0000 (+0900)
Subject: [PATCH] libata: fix WARN_ON() condition in *_fill_sg()
X-Git-Tag: v2.6.16-rc5~67^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9ae61c6cb69f5251d160576c324948805f97e901;p=pandora-kernel.git

[PATCH] libata: fix WARN_ON() condition in *_fill_sg()

For ATAPI commands, padding can reduce qc->n_elem by one and thus to
zero making assert(qc->n_elem > 0)'s in ata_fill_sg() and qs_fill_sg()
fail for legal commands.  This patch fixes the assert()'s to take
qc->pad_len into account.

Although the condition check seems a bit excessive, as this part of
code isn't still stable yet, I think it's worth to keep those.

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