diff options
| author | Prike.Liang <Prike.Liang@amd.com> | 2020-06-08 15:20:56 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-07-01 01:59:18 -0400 |
| commit | 207f0f13574825a700a4ea52d3ac4821cea627c8 (patch) | |
| tree | 799ba6266e61fa9519cab7435ab30608de0cb2b9 /drivers/gpu | |
| parent | d00c3d045cd91b8d45e0a9cdfd91d4ace4e0bbc9 (diff) | |
drm/amdgpu/soc15: fix nullptr issue in soc15_read_register() for reg base accessing
The failed case is no SDMA1 IP for Renoir discovery table while in accessing SDMA1 reg base,
thus need have nullptr test for soc15_read_register invoked in MMR addres space inquire opt.
Signed-off-by: Prike.Liang <Prike.Liang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/soc15.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c index 623745b2d8b3..3e406eeeaff6 100644 --- a/drivers/gpu/drm/amd/amdgpu/soc15.c +++ b/drivers/gpu/drm/amd/amdgpu/soc15.c @@ -415,7 +415,8 @@ static int soc15_read_register(struct amdgpu_device *adev, u32 se_num, *value = 0; for (i = 0; i < ARRAY_SIZE(soc15_allowed_read_registers); i++) { en = &soc15_allowed_read_registers[i]; - if (reg_offset != (adev->reg_offset[en->hwip][en->inst][en->seg] + if (adev->reg_offset[en->hwip][en->inst] && + reg_offset != (adev->reg_offset[en->hwip][en->inst][en->seg] + en->reg_offset)) continue; |