[AMD Official Use Only - General] This patch is,
Reviewed-by: Tim Huang <[email protected]> > -----Original Message----- > From: amd-gfx <[email protected]> On Behalf Of Jesse > Zhang > Sent: Friday, May 10, 2024 10:51 AM > To: [email protected] > Cc: Deucher, Alexander <[email protected]>; Koenig, Christian > <[email protected]>; Huang, Tim <[email protected]>; Zhang, > Jesse(Jie) <[email protected]>; Zhang, Jesse(Jie) > <[email protected]> > Subject: [PATCH 19/22] drm/amdgpu: Fix the warning division or modulo by > zero for the variable num_xcc_per_xcp > > Dividing expression num_xcc_per_xcp which may be zero has undefined > behavior. > > Signed-off-by: Jesse Zhang <[email protected]> > --- > drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c > b/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c > index 414ea3f560a7..5752c6760992 100644 > --- a/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c > +++ b/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c > @@ -522,6 +522,9 @@ static int > aqua_vanjaram_switch_partition_mode(struct amdgpu_xcp_mgr *xcp_mgr, > goto unlock; > > num_xcc_per_xcp = __aqua_vanjaram_get_xcc_per_xcp(xcp_mgr, > mode); > + if (!num_xcc_per_xcp) > + goto unlock; > + > if (adev->gfx.funcs->switch_partition_mode) > adev->gfx.funcs->switch_partition_mode(xcp_mgr->adev, > num_xcc_per_xcp); > -- > 2.25.1
