From: Anshuman Gupta <anshuman.gupta@intel.com>
Date: Tue, 19 Jan 2021 06:46:54 +0000 (+0530)
Subject: drm/i915/hdcp: Fix WARN_ON(data->k > INTEL_NUM_PIPES)
X-Git-Tag: accepted/tizen/unified/20230118.172025~6402^2~29^2~492
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7fde594fd866dcec4d126fff9a284ccb2fe1266a;p=platform%2Fkernel%2Flinux-rpi.git

drm/i915/hdcp: Fix WARN_ON(data->k > INTEL_NUM_PIPES)

Initialize no. of streams transmitted on a port to zero
such that intel_hdcp_required_content_stream() can
prepared the content stream after subsequemt attmept to
enable hdcp after a HDCP failure.

v2:
- Initialize k at top level instead of else branch. [Jani]

Cc: Ramalingam C <ramalingam.c@intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210119064655.1605-2-anshuman.gupta@intel.com
---

diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
index db8dff2..581ccb0 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -53,6 +53,8 @@ intel_hdcp_required_content_stream(struct intel_digital_port *dig_port)
 	bool enforce_type0 = false;
 	int k;
 
+	data->k = 0;
+
 	if (dig_port->hdcp_auth_status)
 		return 0;