6.7-stable review patch. If anyone has any objections, please let me know.
------------------
From: Srinivasan Shanmugam <srinivasan.shanmugam@xxxxxxx>
[ Upstream commit 66951d98d9bf45ba25acf37fe0747253fafdf298 ]
In "u32 otg_inst = pipe_ctx->stream_res.tg->inst;"
pipe_ctx->stream_res.tg could be NULL, it is relying on the caller to
ensure the tg is not NULL.
Fixes: 474ac4a875ca ("drm/amd/display: Implement some asic specific abm call backs.")
Cc: Yongqiang Sun <yongqiang.sun@xxxxxxx>
Cc: Anthony Koo <Anthony.Koo@xxxxxxx>
Cc: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
Cc: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@xxxxxxx>
Reviewed-by: Anthony Koo <Anthony.Koo@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
.../amd/display/dc/hwss/dcn21/dcn21_hwseq.c | 24 +++++++++++--------
1 file changed, 14 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c
index a9cd39f77360..5c7f380a84f9 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c
@@ -206,28 +206,32 @@ void dcn21_set_abm_immediate_disable(struct pipe_ctx *pipe_ctx)
void dcn21_set_pipe(struct pipe_ctx *pipe_ctx)
{
struct abm *abm = pipe_ctx->stream_res.abm;
- uint32_t otg_inst = pipe_ctx->stream_res.tg->inst;
+ struct timing_generator *tg = pipe_ctx->stream_res.tg;
struct panel_cntl *panel_cntl = pipe_ctx->stream->link->panel_cntl;
struct dmcu *dmcu = pipe_ctx->stream->ctx->dc->res_pool->dmcu;
+ uint32_t otg_inst;
+
+ if (!abm && !tg && !panel_cntl)
+ return;
+
+ otg_inst = tg->inst;
if (dmcu) {
dce110_set_pipe(pipe_ctx);
return;
}
- if (abm && panel_cntl) {
- if (abm->funcs && abm->funcs->set_pipe_ex) {
- abm->funcs->set_pipe_ex(abm,
+ if (abm->funcs && abm->funcs->set_pipe_ex) {
+ abm->funcs->set_pipe_ex(abm,
otg_inst,
SET_ABM_PIPE_NORMAL,
panel_cntl->inst,
panel_cntl->pwrseq_inst);
- } else {
- dmub_abm_set_pipe(abm, otg_inst,
- SET_ABM_PIPE_NORMAL,
- panel_cntl->inst,
- panel_cntl->pwrseq_inst);
- }
+ } else {
+ dmub_abm_set_pipe(abm, otg_inst,
+ SET_ABM_PIPE_NORMAL,
+ panel_cntl->inst,
+ panel_cntl->pwrseq_inst);
}
}
--
2.43.0
