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drm/amdgpu: Fix null pointer dereference

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amdgpu_reg_state_sysfs_fini could be invoked at the
time when asic_func is even not initialized, i.e.,
amdgpu_discovery_init fails for some reason.

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Hawking Zhang
2024-01-22 17:38:23 +08:00
committed by Alex Deucher
parent 89a7c0bd74
commit bc8f6d42b1
1 changed files with 1 additions and 1 deletions
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drivers/gpu/drm/amd/include/amdgpu_reg_state.h
+1 -1
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@@ -138,7 +138,7 @@ static inline size_t amdgpu_reginst_size(uint16_t num_inst, size_t inst_size,
}
#define amdgpu_asic_get_reg_state_supported(adev) \
((adev)->asic_funcs->get_reg_state ? 1 : 0)
(((adev)->asic_funcs && (adev)->asic_funcs->get_reg_state) ? 1 : 0)
#define amdgpu_asic_get_reg_state(adev, state, buf, size) \
((adev)->asic_funcs->get_reg_state ? \