linux-kernel - Re: [PATCH v4 2/9] usb: typec: Add retimer handle to port

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <Ys0ww4E7X7NjN4Lu@kuha.fi.intel.com>
Date:   Tue, 12 Jul 2022 11:28:51 +0300
From:   Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:     Prashant Malani <pmalani@...omium.org>
Cc:     linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        chrome-platform@...ts.linux.dev, bleung@...omium.org,
        Daisuke Nojiri <dnojiri@...omium.org>,
        "Dustin L. Howett" <dustin@...ett.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Guenter Roeck <groeck@...omium.org>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        Tzung-Bi Shih <tzungbi@...nel.org>
Subject: Re: [PATCH v4 2/9] usb: typec: Add retimer handle to port

Mon, Jul 11, 2022 at 07:22:56AM +0000, Prashant Malani kirjoitti:
> Similar to mux and orientation switch, add a handle for registered
> retimer to the port, so that it has handles to the various switches
> connected to it.
> 
> Signed-off-by: Prashant Malani <pmalani@...omium.org>

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

> ---
> 
> Changes since v3:
> - No changes.
> 
> Changes since v2:
> - No changes.
> 
> Changes since v1:
> - Relinquish retimer reference during typec_release.
> 
>  drivers/usb/typec/class.c | 9 +++++++++
>  drivers/usb/typec/class.h | 1 +
>  2 files changed, 10 insertions(+)
> 
> diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
> index 9062836bb638..f08e32d552b4 100644
> --- a/drivers/usb/typec/class.c
> +++ b/drivers/usb/typec/class.c
> @@ -12,6 +12,7 @@
>  #include <linux/slab.h>
>  #include <linux/usb/pd_vdo.h>
>  #include <linux/usb/typec_mux.h>
> +#include <linux/usb/typec_retimer.h>
>  
>  #include "bus.h"
>  #include "class.h"
> @@ -1736,6 +1737,7 @@ static void typec_release(struct device *dev)
>  	ida_destroy(&port->mode_ids);
>  	typec_switch_put(port->sw);
>  	typec_mux_put(port->mux);
> +	typec_retimer_put(port->retimer);
>  	kfree(port->cap);
>  	kfree(port);
>  }
> @@ -2249,6 +2251,13 @@ struct typec_port *typec_register_port(struct device *parent,
>  		return ERR_PTR(ret);
>  	}
>  
> +	port->retimer = typec_retimer_get(&port->dev);
> +	if (IS_ERR(port->retimer)) {
> +		ret = PTR_ERR(port->retimer);
> +		put_device(&port->dev);
> +		return ERR_PTR(ret);
> +	}
> +
>  	ret = device_add(&port->dev);
>  	if (ret) {
>  		dev_err(parent, "failed to register port (%d)\n", ret);
> diff --git a/drivers/usb/typec/class.h b/drivers/usb/typec/class.h
> index 43fcf9e37a8c..673b2952b074 100644
> --- a/drivers/usb/typec/class.h
> +++ b/drivers/usb/typec/class.h
> @@ -55,6 +55,7 @@ struct typec_port {
>  	enum typec_orientation		orientation;
>  	struct typec_switch		*sw;
>  	struct typec_mux		*mux;
> +	struct typec_retimer		*retimer;
>  
>  	const struct typec_capability	*cap;
>  	const struct typec_operations   *ops;
> -- 
> 2.37.0.144.g8ac04bfd2-goog

-- 
heikki