From: Prike Liang <Prike.Liang@amd.com>
Date: Tue, 22 Jul 2025 05:43:51 +0000 (+0800)
Subject: drm/amdgpu: keeping waiting userq fence infinitely
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=873f44c32797c2f4715a6632eac0807fd1084747;p=thirdparty%2Flinux.git

drm/amdgpu: keeping waiting userq fence infinitely

Keeping waiting the userq fence infinitely until
hang detection, and then suspend the hang queue and
set the fence error.

Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
index 5c66f472d055d..4cd662ad7be9e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
@@ -213,19 +213,24 @@ amdgpu_userq_map_helper(struct amdgpu_userq_mgr *uq_mgr,
 	return r;
 }
 
-static void
+static int
 amdgpu_userq_wait_for_last_fence(struct amdgpu_userq_mgr *uq_mgr,
 				 struct amdgpu_usermode_queue *queue)
 {
 	struct dma_fence *f = queue->last_fence;
-	int ret;
+	int ret = 0;
 
 	if (f && !dma_fence_is_signaled(f)) {
-		ret = dma_fence_wait_timeout(f, true, msecs_to_jiffies(100));
-		if (ret <= 0)
+		ret = dma_fence_wait_timeout(f, true, MAX_SCHEDULE_TIMEOUT);
+		if (ret <= 0) {
 			drm_file_err(uq_mgr->file, "Timed out waiting for fence=%llu:%llu\n",
 				     f->context, f->seqno);
+			queue->state = AMDGPU_USERQ_STATE_HUNG;
+			return -ETIME;
+		}
 	}
+
+	return ret;
 }
 
 static void