media: videobuf-dma-contig: Use size of buffer in mmap not vma size

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The size of the vma can be larger than the size of the backing buffer.
Use the buffer size over vma size to prevent exposing extra memory
to userspace.

Signed-off-by: Andrew F. Davis <afd@ti.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

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Andrew F. Davis 2019-03-29 13:34:27 -04:00 • committed by Mauro Carvalho Chehab

parent 6211e44a4d

commit 8357062148

1 changed files with 1 additions and 3 deletions

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drivers/media/v4l2-core/videobuf-dma-contig.c

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