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

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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>
This commit is contained in:
Ming Qian 2025-09-16 14:10:07 +08:00 committed by Hans Verkuil
parent 634c2cd17b
commit ae246b0032
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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@ -703,15 +703,15 @@ 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);