1 files changed, 42 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4605-drm-amd-display-Modify-comments-to-match-the-code.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4605-drm-amd-display-Modify-comments-to-match-the-code.patch
new file mode 100644
index 00000000..b4ff537e
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4605-drm-amd-display-Modify-comments-to-match-the-code.patch
@@ -0,0 +1,42 @@
+From 8b35343eac17af3e2aabd323fbf6d3dba5d8fe6b Mon Sep 17 00:00:00 2001
+From: Zhan liu <zhan.liu@amd.com>
+Date: Mon, 25 Nov 2019 17:25:18 -0500
+Subject: [PATCH 4605/4736] drm/amd/display: Modify comments to match the code
+
+[Why]
+This line of code was modified. However, comments
+remained unchanged. As a result, comments and code are
+mismatching.
+
+[How]
+Modifying comments to reflect code. At the same time,
+explaining why the value was changed from 200ms to
+3000ms.
+
+Signed-off-by: Zhan Liu <zhan.liu@amd.com>
+Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
+---
+ drivers/gpu/drm/amd/display/dc/dc_helper.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/amd/display/dc/dc_helper.c b/drivers/gpu/drm/amd/display/dc/dc_helper.c
+index 24e4684034f5..acdedd889716 100644
+--- a/drivers/gpu/drm/amd/display/dc/dc_helper.c
++++ b/drivers/gpu/drm/amd/display/dc/dc_helper.c
+@@ -482,7 +482,12 @@ void generic_reg_wait(const struct dc_context *ctx,
+ 		return;
+ 	}
+ 
+-	/* something is terribly wrong if time out is > 200ms. (5Hz) */
++	/*
++	 * Something is terribly wrong if time out is > 3000ms.
++	 * 3000ms is the maximum time needed for SMU to pass values back.
++	 * This value comes from experiments.
++	 *
++	 */
+ 	ASSERT(delay_between_poll_us * time_out_num_tries <= 3000000);
+ 
+ 	for (i = 0; i <= time_out_num_tries; i++) {
+-- 
+2.17.1
+