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drm/amdgpu: Fix oops when pp_funcs->switch_power_profile is unset

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commit 919a52fc4c upstream.

On Vega20 and other pre-production GPUs, powerplay is not enabled yet.
Check for NULL pointers before calling pp_funcs function pointers.

Also affects Kaveri.

CC: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Tested-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Felix Kuehling
2018-07-20 11:37:25 -04:00
committed by Greg Kroah-Hartman
parent d9ea911e2b
commit e3290a5e24
1 changed files with 5 additions and 2 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
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@@ -496,8 +496,11 @@ void amdgpu_amdkfd_set_compute_idle(struct kgd_dev *kgd, bool idle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
amdgpu_dpm_switch_power_profile(adev,
PP_SMC_POWER_PROFILE_COMPUTE, !idle);
if (adev->powerplay.pp_funcs &&
adev->powerplay.pp_funcs->switch_power_profile)
amdgpu_dpm_switch_power_profile(adev,
PP_SMC_POWER_PROFILE_COMPUTE,
!idle);
}
bool amdgpu_amdkfd_is_kfd_vmid(struct amdgpu_device *adev, u32 vmid)