linux-kernel - Re: [net-next PATCH v2] net: phy: Validate PHY LED OPs presence before registering

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] [day] [month] [year] [list]

Message-ID: <67056638.050a0220.179d84.0dc1@mx.google.com>
Date: Tue, 8 Oct 2024 19:04:54 +0200
From: Christian Marangi <ansuelsmth@...il.com>
To: Andrew Lunn <andrew@...n.ch>
Cc: Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [net-next PATCH v2] net: phy: Validate PHY LED OPs presence
 before registering

On Tue, Oct 08, 2024 at 07:02:18PM +0200, Andrew Lunn wrote:
> On Tue, Oct 08, 2024 at 03:13:34PM +0200, Christian Marangi wrote:
> > On Tue, Oct 08, 2024 at 03:08:32PM +0200, Andrew Lunn wrote:
> > > > +	/* Check if the PHY driver have at least an OP to
> > > > +	 * set the LEDs.
> > > > +	 */
> > > > +	if (!phydev->drv->led_brightness_set &&
> > > > +	    !phydev->drv->led_blink_set &&
> > > > +	    !phydev->drv->led_hw_control_set) {
> > > 
> > > I think this condition is too strong. All that should be required is
> > > led_brightness_set(). The rest can be done in software.
> > >
> > 
> > Mhh the idea was really to check if one of the 3 is declared. Ideally to
> > future proof case where some led will only expose led_hw_control_set or
> > only led_blink_set?
> 
> Ah, i read it wrong. Sorry.
> 
> Maybe apply De Morgan's laws to make it more readable?
> 
> +	if (!(phydev->drv->led_brightness_set ||
> +	      phydev->drv->led_blink_set ||
> +	      phydev->drv->led_hw_control_set)) {
> 
> However, it is correct as is.
>

Happy to send v3. Np!

-- 
	Ansuel