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drm/amd/display: Fix crash in hwss_set_output_transfer_func()

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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: 6bfca93847 ("drm/amd/display: Refactor DPP_SET_OUTPUT_TRANSFER_FUNC to drop pipe_ctx")
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Cc: Tomasz Siemek <tomasz.siemek@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Timur Kristóf 2026-08-03 14:41:21 +02:00 committed by Alex Deucher
parent 9d07a6ea18
commit 6411a35690
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c
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@ -2312,7 +2312,8 @@ 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,
}