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media: amphion: Cancel message work before releasing the VPU core

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commit ae246b0032146e352c4c06a7bf03cd3d5bcb2ecd upstream.

To avoid accessing the VPU register after release of the VPU core,
cancel the message work and destroy the workqueue that handles the
VPU message before release of the VPU core.

Fixes: 3cd084519c ("media: amphion: add vpu v4l2 m2m support")
Cc: stable@vger.kernel.org
Signed-off-by: Ming Qian <ming.qian@oss.nxp.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ming Qian
2025-09-16 14:10:07 +08:00
committed by Greg Kroah-Hartman
parent 52604951b9
commit 4b139f88c2
1 changed files with 3 additions and 3 deletions
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6
drivers/media/platform/amphion/vpu_v4l2.c
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@@ -682,15 +682,15 @@ static int vpu_v4l2_release(struct vpu_inst *inst)
{
vpu_trace(inst->vpu->dev, "%p\n", inst);
vpu_release_core(inst->core);
put_device(inst->dev);
if (inst->workqueue) {
cancel_work_sync(&inst->msg_work);
destroy_workqueue(inst->workqueue);
inst->workqueue = NULL;
}
vpu_release_core(inst->core);
put_device(inst->dev);
v4l2_ctrl_handler_free(&inst->ctrl_handler);
mutex_destroy(&inst->lock);