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Commit 4fb76782 authored by Ramalingam C's avatar Ramalingam C Committed by Uma Shankar
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drm/i915/hdcp: debug logs for sink related failures 

Adding few more debug logs to identify the sink specific HDCP failures
along with a out of mem failure.

v2:
  Capturing the Bug and a-b

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110991


Signed-off-by: default avatarRamalingam C <ramalingam.c@intel.com>
Signed-off-by: default avatarUma Shankar <uma.shankar@intel.com>
cc: Daniel Vetter <daniel@ffwll.ch>
Acked-by: default avatarDaniel Vetter <daniel@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190708113319.2517-1-ramalingam.c@intel.com
parent 4a5fdc96

drivers/gpu/drm/i915/display/intel_hdcp.c

+9 −3
Original line number Diff line number Diff line
@@ -523,12 +523,16 @@ int intel_hdcp_auth_downstream(struct intel_connector *connector) 
	 * authentication.

	 */

	num_downstream = DRM_HDCP_NUM_DOWNSTREAM(bstatus[0]);

	if (num_downstream == 0)

	if (num_downstream == 0) {

		DRM_DEBUG_KMS("Repeater with zero downstream devices\n");

		return -EINVAL;

	}



	ksv_fifo = kcalloc(DRM_HDCP_KSV_LEN, num_downstream, GFP_KERNEL);

	if (!ksv_fifo)

	if (!ksv_fifo) {

		DRM_DEBUG_KMS("Out of mem: ksv_fifo\n");

		return -ENOMEM;

	}



	ret = shim->read_ksv_fifo(intel_dig_port, num_downstream, ksv_fifo);

	if (ret)
@@ -1206,8 +1210,10 @@ static int hdcp2_authentication_key_exchange(struct intel_connector *connector) 
	if (ret < 0)

		return ret;



	if (msgs.send_cert.rx_caps[0] != HDCP_2_2_RX_CAPS_VERSION_VAL)

	if (msgs.send_cert.rx_caps[0] != HDCP_2_2_RX_CAPS_VERSION_VAL) {

		DRM_DEBUG_KMS("cert.rx_caps dont claim HDCP2.2\n");

		return -EINVAL;

	}



	hdcp->is_repeater = HDCP_2_2_RX_REPEATER(msgs.send_cert.rx_caps[2]);