The pipe_ctx->plane_res.hubp pointer is NULL on all DCE
hardware, which causes a kernel NULL pointer dereference
on all Vega and older GPUs.
Let's add a simple NULL check.
Fixes: f879f53407f0 ("drm/amd/display: Refactor DPP_SET_OUTPUT_TRANSFER_FUNC to
drop pipe_ctx")
Signed-off-by: Timur Kristóf <[email protected]>
Cc: Tomasz Siemek <[email protected]>
---
drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c
b/drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c
index 11411fa94665..5495e493b2eb 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c
@@ -1900,7 +1900,8 @@ void hwss_set_output_transfer_func(struct dc *dc, struct
pipe_ctx *pipe_ctx)
.xfm = pipe_ctx->plane_res.xfm,
.dpp = pipe_ctx->plane_res.dpp,
.mpc = dc->res_pool->mpc,
- .mpcc_id = pipe_ctx->plane_res.hubp->inst,
+ .mpcc_id = pipe_ctx->plane_res.hubp ?
+ pipe_ctx->plane_res.hubp->inst
: 0,
.is_top_pipe = resource_is_pipe_type(pipe_ctx,
OPP_HEAD),
.stream = pipe_ctx->stream,
}
--
2.55.0
