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drm/amdgpu: Wait for reset on init completion

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When reset on initialization is requested, wait for the reset to finish.
In cases where module is loaded after boot, this makes sure all
initialization work is done after a successful return of modprobe.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Ramesh Errabolu <ramesh.errabolu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lijo Lazar
2024-10-07 13:49:45 +05:30
committed by Alex Deucher
parent 98c0b0efcc
commit d25d26b8a8
1 changed files with 8 additions and 1 deletions
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9
drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
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@@ -1548,6 +1548,7 @@ static void amdgpu_xgmi_schedule_reset_on_init(struct amdgpu_hive_info *hive)
int amdgpu_xgmi_reset_on_init(struct amdgpu_device *adev)
{
struct amdgpu_hive_info *hive;
bool reset_scheduled;
int num_devs;
hive = amdgpu_get_xgmi_hive(adev);
@@ -1556,12 +1557,18 @@ int amdgpu_xgmi_reset_on_init(struct amdgpu_device *adev)
mutex_lock(&hive->hive_lock);
num_devs = atomic_read(&hive->number_devices);
if (num_devs == adev->gmc.xgmi.num_physical_nodes)
reset_scheduled = false;
if (num_devs == adev->gmc.xgmi.num_physical_nodes) {
amdgpu_xgmi_schedule_reset_on_init(hive);
reset_scheduled = true;
}
mutex_unlock(&hive->hive_lock);
amdgpu_put_xgmi_hive(hive);
if (reset_scheduled)
flush_work(&hive->reset_on_init_work);
return 0;
}