From: Dave Gordon <david.s.gordon@intel.com>
Date: Tue, 30 Jun 2015 21:58:54 +0000 (-0700)
Subject: lib/scatterlist: mark input buffer parameters as 'const'
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~53^2~24
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2a1bf8f93b33992bb0457512b28d046e279bbd7e;p=pandora-kernel.git

lib/scatterlist: mark input buffer parameters as 'const'

The 'buf' parameter of sg(p)copy_from_buffer() can and should be
const-qualified, although because of the shared implementation of
_to_buffer() and _from_buffer(), we have to cast this away internally.

This means that callers who have a 'const' buffer containing the data to
be copied to the sg-list no longer have to cast away the const-ness
themselves.  It also enables improved coverage by code analysis tools.

Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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