linux-kernel - Re: [PATCH net-next 2/3] net: dsa: mv88e6xxx: leds: fix led refcount in error path

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Message-ID: <ZwflEqdeQ43Wgn2K@smile.fi.intel.com>
Date: Thu, 10 Oct 2024 17:30:42 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Javier Carrasco <javier.carrasco.cruz@...il.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Daniel Scally <djrscally@...il.com>,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Andrew Lunn <andrew@...n.ch>,
	Florian Fainelli <f.fainelli@...il.com>,
	Vladimir Oltean <olteanv@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH net-next 2/3] net: dsa: mv88e6xxx: leds: fix led refcount
 in error path

On Tue, Oct 08, 2024 at 06:10:28PM +0200, Javier Carrasco wrote:
> The 'led' fwnode_handle within fwnode_for_each_child_node() must be
> released upon early exits by means of an explicit call to
> fwnode_handle_put(), which in this case is missing.
> 
> Instead of adding the missing call, and considering that this driver was
> recently introduced, use a scoped variant of the loop to automatically
> decrement the child's refcount when it goes out of scope.
> 
> Note that the _avaialable_ version of the loop has been used, as there
> is no apparent reason to walk over unavailable nodes.

...

> -	struct fwnode_handle *led = NULL, *leds = NULL;
> +	struct fwnode_handle *leds = NULL;

Can it be const now?

-- 
With Best Regards,
Andy Shevchenko