From: Christoph Hellwig <hch@infradead.org>
Date: Fri, 3 Oct 2014 08:47:09 +0000 (-0700)
Subject: [SCSI] uas: disable use of blk-mq I/O path
X-Git-Tag: fixes-for-v3.18-merge-window~40^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2c2d831c81ec75a7b0d8e28caa8e3d9c1fe546f9;p=pandora-kernel.git

[SCSI] uas: disable use of blk-mq I/O path

The uas driver uses the block layer tag for USB3 stream IDs.  With
blk-mq we can get larger tag numbers that the queue depth, which breaks
this assumption.  A fix is under way for 3.18, but sits on top of
large changes so can't easily be backported.   Set the disable_blk_mq
path so that a uas device can't easily crash the system when using
blk-mq for SCSI.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
---

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