From: Sabrina Dubroca <sd@queasysnail.net>
Date: Tue, 26 Aug 2014 14:14:02 +0000 (+0200)
Subject: block: fix error handling in sg_io
X-Git-Tag: omap-fixes-against-v3.17-rc3~30^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d19d744685f47f1bb3d39b3ec51eb50afe5ff47d;p=pandora-kernel.git

block: fix error handling in sg_io

Before commit 2cada584b200 ("block: cleanup error handling in sg_io"),
we had ret = 0 before entering the last big if block of sg_io.

Since 2cada584b200, ret = -EFAULT, which breaks hdparm:

/dev/sda:
 setting Advanced Power Management level to 0xc8 (200)
 HDIO_DRIVE_CMD failed: Bad address
 APM_level      = 128

Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Fixes: 2cada584b200 ("block: cleanup error handling in sg_io")
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
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