This is a note to let you know that I've just added the patch titled
drm/amd/display: apply edge-case DISPCLK WDIVIDER changes to master OTG pipes only
to the 6.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amd-display-apply-edge-case-dispclk-wdivider-changes-to-master-otg-pipes-only.patch
and it can be found in the queue-6.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b206011bf05069797df1f4c5ce639398728978e2 Mon Sep 17 00:00:00 2001
From: Samson Tam <samson.tam@xxxxxxx>
Date: Mon, 18 Sep 2023 18:43:13 -0400
Subject: drm/amd/display: apply edge-case DISPCLK WDIVIDER changes to master OTG pipes only
From: Samson Tam <samson.tam@xxxxxxx>
commit b206011bf05069797df1f4c5ce639398728978e2 upstream.
[Why]
The edge-case DISPCLK WDIVIDER changes call stream_enc functions.
But with MPC pipes, downstream pipes have null stream_enc and will
cause crash.
[How]
Only call stream_enc functions for pipes that are OTG master.
Reviewed-by: Alvin Lee <alvin.lee2@xxxxxxx>
Cc: Mario Limonciello <mario.limonciello@xxxxxxx>
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Acked-by: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
Signed-off-by: Samson Tam <samson.tam@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c | 4 ++--
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c
@@ -157,7 +157,7 @@ void dcn20_update_clocks_update_dentist(
int32_t N;
int32_t j;
- if (!pipe_ctx->stream)
+ if (!resource_is_pipe_type(pipe_ctx, OTG_MASTER))
continue;
/* Virtual encoders don't have this function */
if (!stream_enc->funcs->get_fifo_cal_average_level)
@@ -188,7 +188,7 @@ void dcn20_update_clocks_update_dentist(
int32_t N;
int32_t j;
- if (!pipe_ctx->stream)
+ if (!resource_is_pipe_type(pipe_ctx, OTG_MASTER))
continue;
/* Virtual encoders don't have this function */
if (!stream_enc->funcs->get_fifo_cal_average_level)
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
@@ -355,7 +355,7 @@ static void dcn32_update_clocks_update_d
int32_t N;
int32_t j;
- if (!pipe_ctx->stream)
+ if (!resource_is_pipe_type(pipe_ctx, OTG_MASTER))
continue;
/* Virtual encoders don't have this function */
if (!stream_enc->funcs->get_fifo_cal_average_level)
@@ -401,7 +401,7 @@ static void dcn32_update_clocks_update_d
int32_t N;
int32_t j;
- if (!pipe_ctx->stream)
+ if (!resource_is_pipe_type(pipe_ctx, OTG_MASTER))
continue;
/* Virtual encoders don't have this function */
if (!stream_enc->funcs->get_fifo_cal_average_level)
Patches currently in stable-queue which might be from samson.tam@xxxxxxx are
queue-6.5/drm-amd-display-apply-edge-case-dispclk-wdivider-changes-to-master-otg-pipes-only.patch
