drm/dp: Print the number of bytes processed for aux nacks
When doing a native or i2c aux write the sink will indicate the number
of bytes written even if it the nacks the transfer. When we receive a
nack we just return an error upwards, but it might still be interesting
to see how many bytes made it before the nack. So include that information
in the debug messages.
v2: Also print the message size (Jani)
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index d5368ea..71dcbc6 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -462,7 +462,7 @@
break;
case DP_AUX_NATIVE_REPLY_NACK:
- DRM_DEBUG_KMS("native nack\n");
+ DRM_DEBUG_KMS("native nack (result=%d, size=%zu)\n", ret, msg->size);
return -EREMOTEIO;
case DP_AUX_NATIVE_REPLY_DEFER:
@@ -493,7 +493,7 @@
return ret;
case DP_AUX_I2C_REPLY_NACK:
- DRM_DEBUG_KMS("I2C nack\n");
+ DRM_DEBUG_KMS("I2C nack (result=%d, size=%zu\n", ret, msg->size);
aux->i2c_nack_count++;
return -EREMOTEIO;