diff options
| author | Ramalingam C <ramalingam.c@intel.com> | 2019-07-08 14:33:19 +0300 |
|---|---|---|
| committer | Uma Shankar <uma.shankar@intel.com> | 2019-07-09 14:04:46 +0300 |
| commit | 4fb76782ad012d657df51f437a0dfcebce6aea53 (patch) | |
| tree | 23f680cb8e05944ee81fb60f29e6d5c28dc0a8ad /drivers/gpu/drm/i915/display/intel_hdcp.c | |
| parent | 4a5fdc962fc4ce143791496def78c2acc3e51810 (diff) | |
| download | linux-4fb76782ad012d657df51f437a0dfcebce6aea53.tar.xz | |
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 <ramalingam.c@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
cc: Daniel Vetter <daniel@ffwll.ch>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190708113319.2517-1-ramalingam.c@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_hdcp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_hdcp.c | 12 |
1 files 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]); |