[PATCH 3/3] drm/amdgpu: Remove the while loop from amdgpu_job_prepare_job

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin at igalia.com>

While loop makes it sound like amdgpu_vmid_grab() potentially needs to be
called multiple times to produce a fence, while in reality all code paths
either return an error, assign a valid job->vmid or assign a vmid which
will be valid once the returned fence signals.

Therefore we can remove the loop to make it clear the call does not need
to be repeated.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at igalia.com>
Cc: Christian König <christian.koenig at amd.com>
---
I stared for a good while, going back and forth, and couldn't see that the
while loop is needed. But maybe I missed something?
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
index d11cb0ad8c49..85f10b59d09c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
@@ -356,7 +356,7 @@ amdgpu_job_prepare_job(struct drm_sched_job *sched_job,
 	if (job->gang_submit)
 		fence = amdgpu_device_switch_gang(ring->adev, job->gang_submit);
 
-	while (!fence && job->vm && !job->vmid) {
+	if (!fence && job->vm && !job->vmid) {
 		r = amdgpu_vmid_grab(job->vm, ring, job, &fence);
 		if (r) {
 			dev_err(ring->adev->dev, "Error getting VM ID (%d)\n", r);
-- 
2.46.0