Subject: Re: linux-next: manual merge of the usb tree with the usb.current tree

From: Greg KH <[email-masked]>
Date: Mon, 23 Jan 2023 15:40:46 +0100

On Wed, Jan 18, 2023 at 11:56:24AM +1100, Stephen Rothwell wrote:
> Hi all,
> 
> Today's linux-next merge of the usb tree got a conflict in:
> 
>   drivers/usb/typec/ucsi/ucsi.c
> 
> between commit:
> 
>   fac4b8633fd6 ("usb: ucsi: Ensure connector delayed work items are flushed")
> 
> from the usb.current tree and commit:
> 
>   b04e1747fbcc ("usb: typec: ucsi: Register USB Power Delivery Capabilities")
> 
> from the usb tree.
> 
> I fixed it up (see below) and can carry the fix as necessary. This
> is now fixed as far as linux-next is concerned, but any non trivial
> conflicts should be mentioned to your upstream maintainer when your tree
> is submitted for merging.  You may also want to consider cooperating
> with the maintainer of the conflicting tree to minimise any particularly
> complex conflicts.
> 
> -- 
> Cheers,
> Stephen Rothwell
> 
> diff --cc drivers/usb/typec/ucsi/ucsi.c
> index 1292241d581a,d04809476f71..000000000000
> --- a/drivers/usb/typec/ucsi/ucsi.c
> +++ b/drivers/usb/typec/ucsi/ucsi.c
> @@@ -1426,20 -1551,14 +1557,26 @@@ void ucsi_unregister(struct ucsi *ucsi
>   		ucsi_unregister_altmodes(&ucsi->connector[i],
>   					 UCSI_RECIPIENT_CON);
>   		ucsi_unregister_port_psy(&ucsi->connector[i]);
>  -		if (ucsi->connector[i].wq)
>  +
>  +		if (ucsi->connector[i].wq) {
>  +			struct ucsi_work *uwork;
>  +
>  +			mutex_lock(&ucsi->connector[i].lock);
>  +			/*
>  +			 * queue delayed items immediately so they can execute
>  +			 * and free themselves before the wq is destroyed
>  +			 */
>  +			list_for_each_entry(uwork, &ucsi->connector[i].partner_tasks, node)
>  +				mod_delayed_work(ucsi->connector[i].wq, &uwork->work, 0);
>  +			mutex_unlock(&ucsi->connector[i].lock);
>   			destroy_workqueue(ucsi->connector[i].wq);
>  +		}
> + 		usb_power_delivery_unregister_capabilities(ucsi->connector[i].port_sink_caps);
> + 		ucsi->connector[i].port_sink_caps = NULL;
> + 		usb_power_delivery_unregister_capabilities(ucsi->connector[i].port_source_caps);
> + 		ucsi->connector[i].port_source_caps = NULL;
> + 		usb_power_delivery_unregister(ucsi->connector[i].pd);
> + 		ucsi->connector[i].pd = NULL;
>   		typec_unregister_port(ucsi->connector[i].port);
>   	}
>   

This looks good and should be resolved in my tree now, thanks!

greg k-h