Re: [PATCH] drm/amd/display: fix application of sizeof to pointer

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On 2021-11-23 10:04 p.m., cgel.zte@xxxxxxxxx wrote:
From: Lv Ruyi <lv.ruyi@xxxxxxxxxx>

Both of split and merge are pointers, not arrays.

Reported-by: Zeal Robot <zealci@xxxxxxxxxx>
Signed-off-by: Lv Ruyi <lv.ruyi@xxxxxxxxxx>
---
  drivers/gpu/drm/amd/display/dc/dml/dml_wrapper.c | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dml_wrapper.c b/drivers/gpu/drm/amd/display/dc/dml/dml_wrapper.c
index ece34b0b8a46..91810aaee5a3 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dml_wrapper.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dml_wrapper.c
@@ -1223,8 +1223,8 @@ static void dml_full_validate_bw_helper(struct dc *dc,
  		*pipe_cnt = dml_populate_dml_pipes_from_context(dc, context, pipes, false);
  		*vlevel = dml_get_voltage_level(&context->bw_ctx.dml, pipes, *pipe_cnt);
  		if (*vlevel < context->bw_ctx.dml.soc.num_states) {
-			memset(split, 0, sizeof(split));
-			memset(merge, 0, sizeof(merge));
+			memset(split, 0, MAX_PIPES * sizeof(*split));
+			memset(merge, 0, MAX_PIPES * sizeof(*merge));
  			*vlevel = dml_validate_apply_pipe_split_flags(dc, context, *vlevel, split, merge);
  		}
Nice catch!

Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>

and applied to amd-staging-drm-next

Thanks
Siqueira



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