From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Mon, 2 Jun 2014 13:56:48 +0000 (+0900)
Subject: scsi: increase upper limit for max_sectors
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~143^2~131
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8ed5a4d2f7d8b296a22fed7ec2b543c0500d13be;p=pandora-kernel.git

scsi: increase upper limit for max_sectors

max_sectors in struct Scsi_Host specifies maximum number of sectors
allowed in a single SCSI command.  The data type of max_sectors is
unsigned short, so the maximum transfer length per SCSI command is
limited to less than 256MB in 4096-bytes sector size. (0xffff * 4096)

This commit increases the SCSI mid level's limitation for max_sectors
upto the block layer's limitation for max_hw_sectors by extending the
data type of max_sectors in struct Scsi_Host and scsi_host_template,
so that SCSI lower level drivers can specify more than 0xffff.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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