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authorAlex Deucher <alexander.deucher@amd.com>2023-03-07 16:59:13 +0300
committerAlex Deucher <alexander.deucher@amd.com>2023-03-10 06:06:19 +0300
commitb42fee5e0b44344cfe4c38e61341ee250362c83f (patch)
tree7b91b262b12b0a85fc0f9bab92ba06607bbed7c0 /drivers/gpu
parent2915e43a033a778816fa4bc621f033576796521e (diff)
downloadlinux-b42fee5e0b44344cfe4c38e61341ee250362c83f.tar.xz
drm/amdgpu: fix error checking in amdgpu_read_mm_registers for nv
Properly skip non-existent registers as well. Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2442 Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/nv.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/nv.c b/drivers/gpu/drm/amd/amdgpu/nv.c
index d972025f0d20..855d390c41de 100644
--- a/drivers/gpu/drm/amd/amdgpu/nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/nv.c
@@ -444,9 +444,10 @@ static int nv_read_register(struct amdgpu_device *adev, u32 se_num,
*value = 0;
for (i = 0; i < ARRAY_SIZE(nv_allowed_read_registers); i++) {
en = &nv_allowed_read_registers[i];
- if (adev->reg_offset[en->hwip][en->inst] &&
- reg_offset != (adev->reg_offset[en->hwip][en->inst][en->seg]
- + en->reg_offset))
+ if (!adev->reg_offset[en->hwip][en->inst])
+ continue;
+ else if (reg_offset != (adev->reg_offset[en->hwip][en->inst][en->seg]
+ + en->reg_offset))
continue;
*value = nv_get_register_value(adev,