[Intel-xe] [PATCH v11 02/12] drm/xe/vm: tidy up xe_runtime_pm usage

[Matthew Auld]

The xe_device_mem_access_get() should be all that's needed here and
should now work as expected, without any strange races. In theory should
be no functional changes here.

Reported-by: Oded Gabbay <ogabbay at kernel.org>
Signed-off-by: Matthew Auld <matthew.auld at intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
Cc: Thomas Hellström <thomas.hellstrom at linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
---
 drivers/gpu/drm/xe/xe_vm.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index d1c380ad7f6b..d06892c6963f 100644
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -1202,11 +1202,8 @@ struct xe_vm *xe_vm_create(struct xe_device *xe, u32 flags)
 
 	INIT_LIST_HEAD(&vm->extobj.list);
 
-	if (!(flags & XE_VM_FLAG_MIGRATION)) {
-		/* We need to immeditatelly exit from any D3 state */
-		xe_pm_runtime_get(xe);
+	if (!(flags & XE_VM_FLAG_MIGRATION))
 		xe_device_mem_access_get(xe);
-	}
 
 	err = dma_resv_lock_interruptible(&vm->resv, NULL);
 	if (err)
@@ -1318,10 +1315,8 @@ struct xe_vm *xe_vm_create(struct xe_device *xe, u32 flags)
 err_put:
 	dma_resv_fini(&vm->resv);
 	kfree(vm);
-	if (!(flags & XE_VM_FLAG_MIGRATION)) {
+	if (!(flags & XE_VM_FLAG_MIGRATION))
 		xe_device_mem_access_put(xe);
-		xe_pm_runtime_put(xe);
-	}
 	return ERR_PTR(err);
 }
 
@@ -1474,7 +1469,6 @@ static void vm_destroy_work_func(struct work_struct *w)
 
 	if (!(vm->flags & XE_VM_FLAG_MIGRATION)) {
 		xe_device_mem_access_put(xe);
-		xe_pm_runtime_put(xe);
 
 		if (xe->info.has_asid) {
 			mutex_lock(&xe->usm.lock);
-- 
2.40.1