6.6-stable review patch. If anyone has any objections, please let me know.
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From: Ming Qian ming.qian@oss.nxp.com
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: 3cd084519c6f ("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 --- drivers/media/platform/amphion/vpu_v4l2.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/media/platform/amphion/vpu_v4l2.c +++ b/drivers/media/platform/amphion/vpu_v4l2.c @@ -682,15 +682,15 @@ static int vpu_v4l2_release(struct vpu_i { 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);