>-----Original Message-----
>From: C, Ramalingam
>Sent: Monday, July 8, 2019 5:03 PM
>To: intel-gfx <intel-gfx@lists.freedesktop.org>; Daniel Vetter
><dan...@ffwll.ch>
>Cc: Shankar, Uma <uma.shan...@intel.com>; C, Ramalingam
><ramalinga...@intel.com>
>Subject: [PATCH v2] 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: Ramalingam C <ramalinga...@intel.com>
>cc: Daniel Vetter <dan...@ffwll.ch>
>Acked-by: Daniel Vetter <dan...@ffwll.ch>
>---
Pushed to dinq. Thanks for the patch.
Regards,
Uma Shankar
> 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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