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]
Date:   Sun, 20 Feb 2022 11:12:57 +0100
From:   Pavel Machek <pavel@...x.de>
To:     Sasha Levin <sashal@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Tommaso Merciai <tomm.merciai@...il.com>,
        Richard Leitner <richard.leitner@...ux.dev>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        richard.leitner@...data.com, linux-usb@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 5.10 04/23] usb: usb251xb: add boost-up property
 support

Hi!

> From: Tommaso Merciai <tomm.merciai@...il.com>
> 
> [ Upstream commit 5c2b9c61ae5d8ad0a196d33b66ce44543be22281 ]
> 
> Add support for boost-up register of usb251xb hub.
> boost-up property control USB electrical drive strength
> This register can be set:
> 
>  - Normal mode -> 0x00
>  - Low         -> 0x01
>  - Medium      -> 0x10
>  - High        -> 0x11
> 
> (Normal Default)
> 
> References:
>  - http://www.mouser.com/catalog/specsheets/2514.pdf p29

Should the boost-up property be documented somewhere in the kernel
tree? We normally do that for device tree properties. And we normally
have properties used somewhere in the device tree. What is going on here?

Best regards,
							Pavel

> +++ b/drivers/usb/misc/usb251xb.c
> @@ -543,6 +543,9 @@ static int usb251xb_get_ofdata(struct usb251xb *hub,
>  	if (of_property_read_u16_array(np, "language-id", &hub->lang_id, 1))
>  		hub->lang_id = USB251XB_DEF_LANGUAGE_ID;
>  
> +	if (of_property_read_u8(np, "boost-up", &hub->boost_up))
> +		hub->boost_up = USB251XB_DEF_BOOST_UP;
> +
>  	cproperty_char = of_get_property(np, "manufacturer", NULL);
>  	strlcpy(str, cproperty_char ? : USB251XB_DEF_MANUFACTURER_STRING,
>  		sizeof(str));
> @@ -584,7 +587,6 @@ static int usb251xb_get_ofdata(struct usb251xb *hub,
>  	 * may be as soon as needed.
>  	 */
>  	hub->bat_charge_en = USB251XB_DEF_BATTERY_CHARGING_ENABLE;
> -	hub->boost_up = USB251XB_DEF_BOOST_UP;
>  	hub->boost_57 = USB251XB_DEF_BOOST_57;
>  	hub->boost_14 = USB251XB_DEF_BOOST_14;
>  	hub->port_map12 = USB251XB_DEF_PORT_MAP_12;

-- 
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

Download attachment "signature.asc" of type "application/pgp-signature" (182 bytes)

Powered by blists - more mailing lists