drm/i915: Tune down sink crc timeout dmesg output

For whatever reasons this can happen. For real testcases the test will
notice the -EIO and fall over, but we also have some testcases that
just read all debugfs files. And that shouldn't cause dmesg spam.

So tune it down a bit so that we still have the information for
debugging. And change the errno so that real testcases can easily
differentiate.

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=84890
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 4e49caa5a1b395e7543986c7f7d59911250fedb6..565479002708155159fbc883feb71233483eeb12 100644 (file)
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -3693,8 +3693,8 @@ int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc)
        } while (--attempts && (buf & DP_TEST_COUNT_MASK) == test_crc_count);
 
        if (attempts == 0) {
-               DRM_ERROR("Panel is unable to calculate CRC after 6 vblanks\n");
-               return -EIO;
+               DRM_DEBUG_KMS("Panel is unable to calculate CRC after 6 vblanks\n");
+               return -ETIMEDOUT;
        }
 
        if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0)