linux-kernel - Re: [PATCH v1] usb: typec: tcpm: Update PD of Type-C port upon pd

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Date: Tue, 12 Mar 2024 12:25:47 +0200
From: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To: Kyle Tso <kyletso@...gle.com>
Cc: linux@...ck-us.net, gregkh@...uxfoundation.org, badhri@...gle.com,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	stable@...r.kernel.org
Subject: Re: [PATCH v1] usb: typec: tcpm: Update PD of Type-C port upon pd_set

On Tue, Mar 12, 2024 at 01:23:06AM +0800, Kyle Tso wrote:
> The PD of Type-C port needs to be updated in pd_set. Unlink the Type-C
> port device to the old PD before linking it to a new one.
> 
> Fixes: cd099cde4ed2 ("usb: typec: tcpm: Support multiple capabilities")
> Cc: stable@...r.kernel.org
> Signed-off-by: Kyle Tso <kyletso@...gle.com>

Acked-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>

> ---
>  drivers/usb/typec/tcpm/tcpm.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
> index 3d505614bff1..896f594b9328 100644
> --- a/drivers/usb/typec/tcpm/tcpm.c
> +++ b/drivers/usb/typec/tcpm/tcpm.c
> @@ -6907,7 +6907,9 @@ static int tcpm_pd_set(struct typec_port *p, struct usb_power_delivery *pd)
>  
>  	port->port_source_caps = data->source_cap;
>  	port->port_sink_caps = data->sink_cap;
> +	typec_port_set_usb_power_delivery(p, NULL);
>  	port->selected_pd = pd;
> +	typec_port_set_usb_power_delivery(p, port->selected_pd);
>  unlock:
>  	mutex_unlock(&port->lock);
>  	return ret;
> -- 
> 2.44.0.278.ge034bb2e1d-goog

-- 
heikki