From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Mon, 2 Jun 2014 13:56:46 +0000 (+0900)
Subject: sg: prevent integer overflow when converting from sectors to bytes
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~143^2~133
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=46f69e6a6bbbf3858617c8729e31895846c15a79;p=pandora-kernel.git

sg: prevent integer overflow when converting from sectors to bytes

This prevents integer overflow when converting the request queue's
max_sectors from sectors to bytes.  However, this is a preparation for
extending the data type of max_sectors in struct Scsi_Host and
scsi_host_template.  So, it is impossible to happen this integer
overflow for now, because SCSI low-level drivers can not specify
max_sectors greater than 0xffff due to the data type limitation.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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