From: jsg <jsg@openbsd.org>
Date: Thu, 4 Apr 2024 08:00:22 +0000 (+0000)
Subject: drm/i915/bios: Tolerate devdata==NULL in intel_bios_encoder_supports_dp_dual_mode()
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=818037a2aba5d127ae9667acca04acbd20ea6e9d;p=openbsd

drm/i915/bios: Tolerate devdata==NULL in intel_bios_encoder_supports_dp_dual_mode()

From Ville Syrjala
a891add409e3bc381f4f68c2ce9d953f1865cb1f in linux-6.6.y/6.6.24
32e39bab59934bfd3f37097d4dd85ac5eb0fd549 in mainline linux
---

diff --git a/sys/dev/pci/drm/i915/display/intel_bios.c b/sys/dev/pci/drm/i915/display/intel_bios.c
index 354bc55e1ba..4be57bc4242 100644
--- a/sys/dev/pci/drm/i915/display/intel_bios.c
+++ b/sys/dev/pci/drm/i915/display/intel_bios.c
@@ -3330,6 +3330,9 @@ bool intel_bios_encoder_supports_dp_dual_mode(const struct intel_bios_encoder_da
 {
 	const struct child_device_config *child = &devdata->child;
 
+	if (!devdata)
+		return false;
+
 	if (!intel_bios_encoder_supports_dp(devdata) ||
 	    !intel_bios_encoder_supports_hdmi(devdata))
 		return false;