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drm/i915: Use EIO instead of EAGAIN for sink CRC error.

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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>
This commit is contained in:
Rodrigo Vivi 2014-09-15 19:24:03 -04:00 committed by Daniel Vetter
parent 40bae73611
commit bda0381e72
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/i915/intel_dp.c
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@ -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;