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Commit 8e4f768c authored by Jani Nikula's avatar Jani Nikula
Browse files

drm/i915/dsi: double check element parsing against size if present 



Be a little paranoid in case the specs change or something.

Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/27050d48d0ff3d58e79fcacc41ced4c071b01424.1474286487.git.jani.nikula@intel.com
parent 4b4f497e

drivers/gpu/drm/i915/intel_dsi_panel_vbt.c

+8 −0
Original line number Diff line number Diff line
@@ -441,7 +441,15 @@ static void generic_exec_sequence(struct drm_panel *panel, enum mipi_seq seq_id) 
			operation_size = *data++;



		if (mipi_elem_exec) {

			const u8 *next = data + operation_size;



			data = mipi_elem_exec(intel_dsi, data);



			/* Consistency check if we have size. */

			if (operation_size && data != next) {

				DRM_ERROR("Inconsistent operation size\n");

				return;

			}

		} else if (operation_size) {

			/* We have size, skip. */

			DRM_DEBUG_KMS("Unsupported MIPI operation byte %u\n",