Hello xinhui pan,
This is a semi-automatic email about new static checker warnings.
The patch dbd249c24427: "drm/amdgpu: add amdgpu_ras.c to support ras
(v2)" from Oct 31, 2018, leads to the following Smatch complaint:
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:1215 amdgpu_ras_add_bad_pages()
warn: variable dereferenced before check 'con' (see line 1211)
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:1247 amdgpu_ras_reserve_bad_pages()
warn: variable dereferenced before check 'con' (see line 1242)
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
1210 struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
1211 struct ras_err_handler_data *data = con->eh_data;
^^^^^^^^^^^^
Dereference
1212 int i = pages;
1213 int ret = 0;
1214
1215 if (!con || !data || !bps || pages <= 0)
^^^^
Check
1216 return 0;
1217
regards,
dan carpenter
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