[Intel-xe] [PATCH] drm/xe/vm: Avoid asid lookup if none allocated

[Mika Kuoppala]

The destroy path can and will get called for incomplete
vm objects on error paths, where the asid is not yet allocated.
This leads to lookup fail and assert triggered.

Fix this by not asserting of asid existence if vm never
got assigned one.

Cc: Ohad Sharabi <osharabi at habana.ai>
Cc: Thomas Hellström <thomas.hellstrom at linux.intel.com>
Cc: Matthew Auld <matthew.auld at intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala at linux.intel.com>
---
 drivers/gpu/drm/xe/xe_vm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index e09050f16f07..40ee256eb36a 100644
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -1620,7 +1620,7 @@ static void vm_destroy_work_func(struct work_struct *w)
 	if (!(vm->flags & XE_VM_FLAG_MIGRATION)) {
 		xe_device_mem_access_put(xe);
 
-		if (xe->info.has_asid) {
+		if (xe->info.has_asid && vm->usm.asid) {
 			mutex_lock(&xe->usm.lock);
 			lookup = xa_erase(&xe->usm.asid_to_vm, vm->usm.asid);
 			xe_assert(xe, lookup == vm);
-- 
2.34.1