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3cb6de6faf
Add to the V4L2 framework helper functions to support drivers when validating a buffer of V4L2 ISP parameters. Driver shall use v4l2_isp_params_validate_buffer_size() to verify the size correctness of the data received from userspace, and after having copied the data to a kernel-only memory location, complete the validation by calling v4l2_isp_params_validate_buffer(). Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Michael Riesch <michael.riesch@collabora.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>