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| author | Jiapeng Chong <jiapeng.chong@linux.alibaba.com> | 2024-07-01 05:50:28 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-07-03 01:04:27 +0300 |
| commit | fcb2f988ef4905ac787fef040a28d0f0f610ad83 (patch) | |
| tree | 4d8aaaa73f8f01c95d3dfd60adde16457e3e1f8d /drivers/gpu/drm | |
| parent | f340f2bad1c790d2759680b7df853f548e7beadc (diff) | |
| download | linux-fcb2f988ef4905ac787fef040a28d0f0f610ad83.tar.xz | |
drm/amd/display: Fix unsigned comparison with less than zero
The return value from the call to dml21_find_dc_pipes_for_plane() is int.
However, the return value is being assigned to an unsigned int variable
'num_pipes', the condition if(num_pipes <= 0) is not rigorous enough,
so making 'num_pipes' an int.
./drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_wrapper.c:318:6-15: WARNING: Unsigned expression compared with zero: num_pipes <= 0.
./drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_wrapper.c:360:6-15: WARNING: Unsigned expression compared with zero: num_pipes <= 0.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=9454
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_wrapper.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_wrapper.c b/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_wrapper.c index 9edcacdde6b7..41ecf00ed196 100644 --- a/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_wrapper.c +++ b/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_wrapper.c @@ -285,7 +285,8 @@ bool dml21_validate(const struct dc *in_dc, struct dc_state *context, struct dml void dml21_prepare_mcache_programming(struct dc *in_dc, struct dc_state *context, struct dml2_context *dml_ctx) { - unsigned int num_pipes, dml_prog_idx, dml_phantom_prog_idx, dc_pipe_index; + unsigned int dml_prog_idx, dml_phantom_prog_idx, dc_pipe_index; + int num_pipes; struct pipe_ctx *dc_main_pipes[__DML2_WRAPPER_MAX_STREAMS_PLANES__]; struct pipe_ctx *dc_phantom_pipes[__DML2_WRAPPER_MAX_STREAMS_PLANES__] = {0}; @@ -319,10 +320,8 @@ void dml21_prepare_mcache_programming(struct dc *in_dc, struct dc_state *context } num_pipes = dml21_find_dc_pipes_for_plane(in_dc, context, dml_ctx, dc_main_pipes, dc_phantom_pipes, dml_prog_idx); - - if (num_pipes <= 0 || - dc_main_pipes[0]->stream == NULL || - dc_main_pipes[0]->plane_state == NULL) + if (num_pipes <= 0 || dc_main_pipes[0]->stream == NULL || + dc_main_pipes[0]->plane_state == NULL) continue; /* get config for each pipe */ @@ -361,10 +360,8 @@ void dml21_prepare_mcache_programming(struct dc *in_dc, struct dc_state *context pln_prog = &dml_ctx->v21.mode_programming.programming->plane_programming[dml_prog_idx]; num_pipes = dml21_find_dc_pipes_for_plane(in_dc, context, dml_ctx, dc_main_pipes, dc_phantom_pipes, dml_prog_idx); - - if (num_pipes <= 0 || - dc_main_pipes[0]->stream == NULL || - dc_main_pipes[0]->plane_state == NULL) + if (num_pipes <= 0 || dc_main_pipes[0]->stream == NULL || + dc_main_pipes[0]->plane_state == NULL) continue; /* get config for each pipe */ |