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drm/amdkfd: bail out early if no get_atc_vmid_pasid_mapping_info

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it makes no sense to continue with an undefined vmid.

Fixes: c8b0507f40 ("drm/amdkfd: judge get_atc_vmid_pasid_mapping_info before call")
Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com>
Reported-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Yifan Zhang 2022-03-09 09:59:19 +08:00 committed by Alex Deucher
parent 53b97af4a4
commit d55957fb29
1 changed files with 12 additions and 9 deletions
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21
drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
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@ -500,21 +500,24 @@ static int dbgdev_wave_reset_wavefronts(struct kfd_dev *dev, struct kfd_process
pr_debug("Killing all process wavefronts\n");
if (!dev->kfd2kgd->get_atc_vmid_pasid_mapping_info) {
pr_err("no vmid pasid mapping supported \n");
return -EOPNOTSUPP;
}
/* Scan all registers in the range ATC_VMID8_PASID_MAPPING ..
* ATC_VMID15_PASID_MAPPING
* to check which VMID the current process is mapped to.
*/
if (dev->kfd2kgd->get_atc_vmid_pasid_mapping_info) {
for (vmid = first_vmid_to_scan; vmid <= last_vmid_to_scan; vmid++) {
status = dev->kfd2kgd->get_atc_vmid_pasid_mapping_info
(dev->adev, vmid, &queried_pasid);
for (vmid = first_vmid_to_scan; vmid <= last_vmid_to_scan; vmid++) {
status = dev->kfd2kgd->get_atc_vmid_pasid_mapping_info
(dev->adev, vmid, &queried_pasid);
if (status && queried_pasid == p->pasid) {
pr_debug("Killing wave fronts of vmid %d and pasid 0x%x\n",
vmid, p->pasid);
break;
}
if (status && queried_pasid == p->pasid) {
pr_debug("Killing wave fronts of vmid %d and pasid 0x%x\n",
vmid, p->pasid);
break;
}
}