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From: Ramalingam C <ramalingam.c@intel.com>
To: intel-gfx <intel-gfx@lists.freedesktop.org>,
	Daniel Vetter <daniel@ffwll.ch>
Subject: [PATCH v2] drm/i915/hdcp: debug logs for sink related failures
Date: Mon,  8 Jul 2019 17:03:19 +0530	[thread overview]
Message-ID: <20190708113319.2517-1-ramalingam.c@intel.com> (raw)

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: Ramalingam C <ramalingam.c@intel.com>
cc: Daniel Vetter <daniel@ffwll.ch>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
---
 drivers/gpu/drm/i915/display/intel_hdcp.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
index bc3a94d491c4..a78139f9e847 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -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]);
 
-- 
2.19.1

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             reply	other threads:[~2019-07-08 18:32 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-08 11:33 Ramalingam C [this message]
2019-07-08 19:29 ` ✓ Fi.CI.BAT: success for drm/i915/hdcp: debug logs for sink related failures Patchwork
2019-07-09  9:12 ` ✓ Fi.CI.IGT: " Patchwork
2019-07-09 10:46 ` [PATCH v2] " Shankar, Uma

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