digitv: limit messages to buffer size

commit 821117dc21 upstream.

Return an error rather than memcpy()ing beyond the end of the buffer.
Internal callers use appropriate sizes, but digitv_i2c_xfer may not.

Signed-off-by: Alyssa Milburn <amilburn@zall.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alyssa Milburn 2017-04-01 14:33:42 -03:00 • committed by Greg Kroah-Hartman
commit e42a6715d2