Commit 31b42af5 authored by Suraj Kandpal's avatar Suraj Kandpal
Browse files

drm/i915/hdcp: Add encoder check in intel_hdcp_get_capability 



Sometimes during hotplug scenario or suspend/resume scenario encoder is
not always initialized when intel_hdcp_get_capability add
a check to avoid kernel null pointer dereference.

Signed-off-by: default avatarSuraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: default avatarDnyaneshwar Bhadane <dnyaneshwar.bhadane@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240722064451.3610512-2-suraj.kandpal@intel.com
parent 76a791fa

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

+6 −1
Original line number Diff line number Diff line
@@ -203,11 +203,16 @@ int intel_hdcp_read_valid_bksv(struct intel_digital_port *dig_port, 
/* Is HDCP1.4 capable on Platform and Sink */

bool intel_hdcp_get_capability(struct intel_connector *connector)

{

	struct intel_digital_port *dig_port = intel_attached_dig_port(connector);

	struct intel_digital_port *dig_port;

	const struct intel_hdcp_shim *shim = connector->hdcp.shim;

	bool capable = false;

	u8 bksv[5];



	if (!intel_attached_encoder(connector))

		return capable;



	dig_port = intel_attached_dig_port(connector);



	if (!shim)

		return capable;