[Intel-gfx] [PATCH 2/2] drm/i915: Use EIO instead of EAGAIN for sink CRC error.

[Rodrigo Vivi]

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 at intel.com>
---
 drivers/gpu/drm/i915/intel_dp.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index fae0fae..963e956 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -3473,14 +3473,14 @@ int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc)
 	int attempts = 6;
 
 	if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf) < 0)
-		return -EAGAIN;
+		return -EIO;
 
 	if (!(buf & 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;
 
 	drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, &buf);
 	test_crc_count = buf & DP_TEST_COUNT_MASK;
@@ -3494,7 +3494,7 @@ int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc)
 		return -EIO;
 
 	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;
-- 
1.9.3