[PATCH 09/24] drm/amd/display: Check null pointer before try to access it
Tom Chung
chiahsuan.chung at amd.com
Wed Aug 7 07:55:31 UTC 2024
From: Rodrigo Siqueira <Rodrigo.Siqueira at amd.com>
[why & how]
Change the order of the pipe_ctx->plane_state check to ensure that
plane_state is not null before accessing it.
Reviewed-by: Alex Hung <alex.hung at amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira at amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung at amd.com>
---
.../gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c
index 425432ca497f..a68da1a7092d 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c
@@ -1932,6 +1932,11 @@ static void dcn20_program_pipe(
(pipe_ctx->plane_state && pipe_ctx->plane_state->update_flags.bits.hdr_mult))
hws->funcs.set_hdr_multiplier(pipe_ctx);
+ if ((pipe_ctx->plane_state && pipe_ctx->plane_state->update_flags.bits.hdr_mult) ||
+ pipe_ctx->update_flags.bits.enable)
+ hws->funcs.set_hdr_multiplier(pipe_ctx);
+
+
if (hws->funcs.populate_mcm_luts) {
if (pipe_ctx->plane_state) {
hws->funcs.populate_mcm_luts(dc, pipe_ctx, pipe_ctx->plane_state->mcm_luts,
@@ -1939,13 +1944,13 @@ static void dcn20_program_pipe(
pipe_ctx->plane_state->lut_bank_a = !pipe_ctx->plane_state->lut_bank_a;
}
}
- if (pipe_ctx->update_flags.bits.enable ||
- (pipe_ctx->plane_state &&
+ if ((pipe_ctx->plane_state &&
pipe_ctx->plane_state->update_flags.bits.in_transfer_func_change) ||
(pipe_ctx->plane_state &&
pipe_ctx->plane_state->update_flags.bits.gamma_change) ||
(pipe_ctx->plane_state &&
- pipe_ctx->plane_state->update_flags.bits.lut_3d))
+ pipe_ctx->plane_state->update_flags.bits.lut_3d) ||
+ pipe_ctx->update_flags.bits.enable)
hws->funcs.set_input_transfer_func(dc, pipe_ctx, pipe_ctx->plane_state);
/* dcn10_translate_regamma_to_hw_format takes 750us to finish
--
2.34.1
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