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msm: kgsl: Keep the timeline fence valid for logging

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The timeline fence needs to remain valid for logging purposes. Take an
extra refcount on the timeline dma_fence to make sure it doesn't go
away till we're done with it.

Change-Id: I6670ef7add099a72684c1fe20ed009dff85d1f27
Signed-off-by: Lynus Vaz <quic_lvaz@quicinc.com>
This commit is contained in:
Lynus Vaz
2024-01-19 08:38:17 -08:00
committed by Rakesh Naidu Bhaviripudi
parent 1e664b6f58
commit 69df853d40
1 changed files with 9 additions and 2 deletions
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11
drivers/gpu/msm/kgsl_drawobj.c
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@ -1,7 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2016-2021, The Linux Foundation. All rights reserved.
* Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) 2022-2024, Qualcomm Innovation Center, Inc. All rights reserved.
*/
/*
@ -508,6 +508,8 @@ static int drawobj_add_sync_timeline(struct kgsl_device *device,
/* Set pending flag before adding callback to avoid race */
set_bit(event->id, &syncobj->pending);
/* Get a dma_fence refcount to hand over to the callback */
dma_fence_get(event->fence);
ret = dma_fence_add_callback(event->fence,
&event->cb, drawobj_sync_timeline_fence_callback);
@ -520,10 +522,15 @@ static int drawobj_add_sync_timeline(struct kgsl_device *device,
ret = 0;
}
/* Put the refcount from fence creation */
dma_fence_put(event->fence);
kgsl_drawobj_put(drawobj);
return ret;
}
return ret;
/* Put the refcount from fence creation */
dma_fence_put(event->fence);
return 0;
}
static int drawobj_add_sync_fence(struct kgsl_device *device,