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Commit bda0381e authored by Rodrigo Vivi's avatar Rodrigo Vivi Committed by Daniel Vetter
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drm/i915: Use EIO instead of EAGAIN for sink CRC error. 



If something while getting panel CRC this means that probably hw I/O error
so hw is busted and try again shouldn't help much.

Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 40bae736

drivers/gpu/drm/i915/intel_dp.c

+3 −3
Original line number Diff line number Diff line
@@ -3800,21 +3800,21 @@ int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc) 
	u8 buf[1];



	if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, buf) < 0)

		return -EAGAIN;

		return -EIO;



	if (!(buf[0] & DP_TEST_CRC_SUPPORTED))

		return -ENOTTY;



	if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK,

			       DP_TEST_SINK_START) < 0)

		return -EAGAIN;

		return -EIO;



	/* Wait 2 vblanks to be sure we will have the correct CRC value */

	intel_wait_for_vblank(dev, intel_crtc->pipe);

	intel_wait_for_vblank(dev, intel_crtc->pipe);



	if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0)

		return -EAGAIN;

		return -EIO;



	drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, 0);

	return 0;