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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: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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@ -3800,21 +3800,21 @@ int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc)
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u8 buf[1];
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if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, buf) < 0)
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return -EAGAIN;
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return -EIO;
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if (!(buf[0] & DP_TEST_CRC_SUPPORTED))
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return -ENOTTY;
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if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK,
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DP_TEST_SINK_START) < 0)
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return -EAGAIN;
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return -EIO;
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/* Wait 2 vblanks to be sure we will have the correct CRC value */
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intel_wait_for_vblank(dev, intel_crtc->pipe);
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intel_wait_for_vblank(dev, intel_crtc->pipe);
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if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0)
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return -EAGAIN;
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return -EIO;
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drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, 0);
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return 0;
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