[PATCH] drm/amdgpu: bail on INFO IOCTL if the GPU is in reset

[Alex Deucher]

This avoids queries to read registers or query the SMU
for telemetry data while the GPU is in reset. This mirrors
what we already do for sysfs.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index a2df3025a754..d522e99c6f81 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -607,6 +607,9 @@ int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 	int i, found, ret;
 	int ui32_size = sizeof(ui32);
 
+	if (amdgpu_in_reset(adev))
+		return -EPERM;
+
 	if (!info->return_size || !info->return_pointer)
 		return -EINVAL;
 
-- 
2.42.0