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drm/amdgpu: Fix kernel NULL pointer dereference in dpm functions 

caused by
'commit 83e3c4615872 ("drm/amdgpu: Remove wrapper layer of smu ip functions")'

BUG: unable to handle kernel NULL pointer dereference at 00000000000005d8
[  313.241459] IP: ci_dpm_read_sensor+0x37/0xf0 [amdgpu]

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
hifive-unleashed-5.1
Rex Zhu 2018-03-20 16:32:07 +08:00 committed by Alex Deucher
parent 81ce8bea03
commit eb4900aa4c
3 changed files with 3 additions and 0 deletions
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1
drivers/gpu/drm/amd/amdgpu/ci_dpm.c
View File

@ -6244,6 +6244,7 @@ static int ci_dpm_early_init(void *handle)
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
adev->powerplay.pp_funcs = &ci_dpm_funcs;
adev->powerplay.pp_handle = adev;
ci_dpm_set_irq_funcs(adev);
return 0;

1
drivers/gpu/drm/amd/amdgpu/kv_dpm.c
View File

@ -2963,6 +2963,7 @@ static int kv_dpm_early_init(void *handle)
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
adev->powerplay.pp_funcs = &kv_dpm_funcs;
adev->powerplay.pp_handle = adev;
kv_dpm_set_irq_funcs(adev);
return 0;

1
drivers/gpu/drm/amd/amdgpu/si_dpm.c
View File

@ -7917,6 +7917,7 @@ static int si_dpm_early_init(void *handle)
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
adev->powerplay.pp_funcs = &si_dpm_funcs;
adev->powerplay.pp_handle = adev;
si_dpm_set_irq_funcs(adev);
return 0;
}