[PATCH 1/4] drm/i915: debug log for REPLY_ACK missing
Ramalingam C
ramalingam.c at intel.com
Fri Nov 2 16:49:21 UTC 2018
Adding a DRM_DEBUG log when the DP_AUX_NATIVE_REPLY_ACK is missing
for aksv write.
Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
---
drivers/gpu/drm/i915/intel_dp.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 6b37d66194a3..16f466ebcfe1 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -5375,7 +5375,11 @@ int intel_dp_hdcp_write_an_aksv(struct intel_digital_port *intel_dig_port,
}
reply = (rxbuf[0] >> 4) & DP_AUX_NATIVE_REPLY_MASK;
- return reply == DP_AUX_NATIVE_REPLY_ACK ? 0 : -EIO;
+ ret = reply == DP_AUX_NATIVE_REPLY_ACK ? 0 : -EIO;
+ if (ret)
+ DRM_DEBUG_KMS("Aksv write: DP_AUX_NATIVE_REPLY_ACK missing\n");
+
+ return ret;
}
static int intel_dp_hdcp_read_bksv(struct intel_digital_port *intel_dig_port,
--
2.7.4
More information about the Intel-gfx-trybot
mailing list