From: Guchun Chen guchun.chen@amd.com
commit 5247f05eadf1081a74b2233f291cee2efed25e3a upstream.
Prevent further dpm casting on legacy asics without od_enabled in amdgpu_dpm_is_overdrive_supported. This can avoid UBSAN complain in init sequence.
v2: add a macro to check legacy dpm instead of checking asic family/type v3: refine macro name for naming consistency
Suggested-by: Evan Quan evan.quan@amd.com Signed-off-by: Guchun Chen guchun.chen@amd.com Reviewed-by: Lijo Lazar lijo.lazar@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/amd/pm/amdgpu_dpm.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c +++ b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c @@ -36,6 +36,8 @@ #define amdgpu_dpm_enable_bapm(adev, e) \ ((adev)->powerplay.pp_funcs->enable_bapm((adev)->powerplay.pp_handle, (e)))
+#define amdgpu_dpm_is_legacy_dpm(adev) ((adev)->powerplay.pp_handle == (adev)) + int amdgpu_dpm_get_sclk(struct amdgpu_device *adev, bool low) { const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs; @@ -1421,8 +1423,11 @@ int amdgpu_dpm_is_overdrive_supported(st } else { struct pp_hwmgr *hwmgr;
- /* SI asic does not carry od_enabled */ - if (adev->family == AMDGPU_FAMILY_SI) + /* + * dpm on some legacy asics don't carry od_enabled member + * as its pp_handle is casted directly from adev. + */ + if (amdgpu_dpm_is_legacy_dpm(adev)) return false;
hwmgr = (struct pp_hwmgr *)adev->powerplay.pp_handle;