From: Andy Walls <awalls@md.metrocast.net>
Date: Sat, 18 Dec 2010 13:48:17 +0000 (-0300)
Subject: [media] ivtv: ivtv_write_vbi() should use copy_from_user() for user data buffers
X-Git-Tag: v2.6.38-rc1~470^2~81
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b0c45686c8e8aecc7b0cd04d9b6af48d74418d53;p=pandora-kernel.git

[media] ivtv: ivtv_write_vbi() should use copy_from_user() for user data buffers

ivtv_write_vbi() is used for both VBI data that came from the
driver internally and VBI data that came from the user.  However,
it did not use copy_from_user() for reading the VBI data from the
user buffers.

This change adds a new version of the function,
ivtv_write_vbi_from_user(), that uses copy_from_user() to read the VBI
data provided via user buffers.

This should resolve a sparse build warning reported by Dave Gilbert.

Reported-by: Dr. David Alan Gilbert <linux at treblig.org>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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