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From: Felix Kuehling <Felix.Kuehling@amd.com>
To: <amd-gfx@lists.freedesktop.org>
Subject: [PATCH 1/2] drm/amdkfd: Fix DQM asserts on Hawaii
Date: Wed, 8 Dec 2021 03:25:30 -0500	[thread overview]
Message-ID: <20211208082531.918062-1-Felix.Kuehling@amd.com> (raw)

start_nocpsch would never set dqm->sched_running on Hawaii due to an
early return statement. This would trigger asserts in other functions
and end up in inconsistent states.

Bug: https://github.com/RadeonOpenCompute/ROCm/issues/1624
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
index dd0b952f0173..104b70e61ba0 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -1004,14 +1004,17 @@ static void uninitialize(struct device_queue_manager *dqm)
 
 static int start_nocpsch(struct device_queue_manager *dqm)
 {
+	int r = 0;
+
 	pr_info("SW scheduler is used");
 	init_interrupts(dqm);
 	
 	if (dqm->dev->adev->asic_type == CHIP_HAWAII)
-		return pm_init(&dqm->packet_mgr, dqm);
-	dqm->sched_running = true;
+		r = pm_init(&dqm->packet_mgr, dqm);
+	if (!r)
+		dqm->sched_running = true;
 
-	return 0;
+	return r;
 }
 
 static int stop_nocpsch(struct device_queue_manager *dqm)
-- 
2.32.0


             reply	other threads:[~2021-12-08  8:26 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-08  8:25 Felix Kuehling [this message]
2021-12-08  8:25 ` [PATCH 2/2] drm/amdkfd: Make KFD support on Hawaii experimental Felix Kuehling
2021-12-08 16:34   ` Russell, Kent
2022-01-11  0:13 ` [PATCH 1/2] drm/amdkfd: Fix DQM asserts on Hawaii Felix Kuehling
2022-01-11 14:41   ` Russell, Kent

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