Hello Qingqing Zhuo,
This is a semi-automatic email about new static checker warnings.
Commit 7966f319c66d ("drm/amd/display: Introduce DML2") from Jul 28,
2023, leads to the following Smatch complaint:
drivers/gpu/drm/amd/amdgpu/../display/dc/dml2/dml2_wrapper.c:576 dml2_validate_and_build_resource()
warn: variable dereferenced before check 'context' (see line 569)
drivers/gpu/drm/amd/amdgpu/../display/dc/dml2/dml2_wrapper.c:665 dml2_validate_only()
warn: variable dereferenced before check 'context' (see line 662)
drivers/gpu/drm/amd/amdgpu/../display/dc/dml2/dml2_wrapper.c
568 {
569 struct dml2_context *dml2 = context->bw_ctx.dml2;
^^^^^^^^^
Dereferenced
570 struct dml2_wrapper_scratch *s = &dml2->v20.scratch;
571 struct dml2_dcn_clocks out_clks;
572 unsigned int result = 0;
573 bool need_recalculation = false;
574 uint32_t cstate_enter_plus_exit_z8_ns;
575
576 if (!context || context->stream_count == 0)
^^^^^^^^
Checked too late
577 return true;
578
regards,
dan carpenter
