Hello Rex Zhu,
This is a semi-automatic email about new static checker warnings.
The patch 599a7e9fe1b6: "drm/amd/powerplay: implement smu7 hwmgr to
manager asics with smu ip version 7." from Sep 9, 2016, leads to the
following Smatch complaint:
drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/smu7_hwmgr.c:1463 smu7_get_evv_voltages()
error: we previously assumed 'table_info' could be null (see line 1455)
drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/smu7_hwmgr.c
1454
1455 if (table_info != NULL)
^^^^^^^^^^^^^^^^^
Check for non-NULL.
1456 sclk_table = table_info->vdd_dep_on_sclk;
1457
1458 for (i = 0; i < SMU7_MAX_LEAKAGE_COUNT; i++) {
1459 vv_id = ATOM_VIRTUAL_VOLTAGE_ID0 + i;
1460
1461 if (data->vdd_gfx_control == SMU7_VOLTAGE_CONTROL_BY_SVID2) {
1462 if (0 == phm_get_sclk_for_voltage_evv(hwmgr,
1463 table_info->vddgfx_lookup_table, vv_id, &sclk)) {
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Unchecked dereference.
1464 if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps,
1465 PHM_PlatformCaps_ClockStretcher)) {
regards,
dan carpenter
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