1 files changed, 37 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4680-drm-amd-display-Fixed-kernel-panic-when-booting-with.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4680-drm-amd-display-Fixed-kernel-panic-when-booting-with.patch
new file mode 100644
index 00000000..9c6914bb
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4680-drm-amd-display-Fixed-kernel-panic-when-booting-with.patch
@@ -0,0 +1,37 @@
+From 05e89b05c79f619ba3a3cedf91309d8bcd76b61d Mon Sep 17 00:00:00 2001
+From: David Galiffi <David.Galiffi@amd.com>
+Date: Thu, 7 Nov 2019 17:18:20 -0500
+Subject: [PATCH 4680/4736] drm/amd/display: Fixed kernel panic when booting
+ with DP-to-HDMI dongle
+
+[Why]
+In dc_link_is_dp_sink_present, if dal_ddc_open fails, then
+dal_gpio_destroy_ddc is called, destroying pin_data and pin_clock. They
+are created only on dc_construct, and next aux access will cause a panic.
+
+[How]
+Instead of calling dal_gpio_destroy_ddc, call dal_ddc_close.
+
+Signed-off-by: David Galiffi <David.Galiffi@amd.com>
+Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
+Acked-by: Leo Li <sunpeng.li@amd.com>
+---
+ drivers/gpu/drm/amd/display/dc/core/dc_link.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+index 2accc35996cd..40d6415ba54d 100644
+--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
++++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+@@ -370,7 +370,7 @@ bool dc_link_is_dp_sink_present(struct dc_link *link)
+ 
+ 	if (GPIO_RESULT_OK != dal_ddc_open(
+ 		ddc, GPIO_MODE_INPUT, GPIO_DDC_CONFIG_TYPE_MODE_I2C)) {
+-		dal_gpio_destroy_ddc(&ddc);
++		dal_ddc_close(ddc);
+ 
+ 		return present;
+ 	}
+-- 
+2.17.1
+