From: Tony Battersby <tonyb@cybernetics.com>
Date: Fri, 22 Aug 2014 19:53:35 +0000 (-0400)
Subject: fix regression in SCSI_IOCTL_SEND_COMMAND
X-Git-Tag: omap-fixes-against-v3.17-rc3~30^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2ba136daa3ae1e881c9f586f283fcaa164767dce;p=pandora-kernel.git

fix regression in SCSI_IOCTL_SEND_COMMAND

blk_rq_set_block_pc() memsets rq->cmd to 0, so it should come
immediately after blk_get_request() to avoid overwriting the
user-supplied CDB.  Also check for failure to allocate rq.

Fixes: f27b087b81b7 ("block: add blk_rq_set_block_pc()")
Cc: <stable@vger.kernel.org> # 3.16.x
Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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