netdev - Re: [PATCH v4 2/7] iio: mb1232: relax return value check for IRQ get

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Date: Wed, 17 May 2023 19:47:35 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Matti Vaittinen <mazziesaccount@...il.com>
Cc: Matti Vaittinen <matti.vaittinen@...rohmeurope.com>,
	Daniel Scally <djrscally@...il.com>,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Michael Hennerich <Michael.Hennerich@...log.com>,
	Jonathan Cameron <jic23@...nel.org>,
	Andreas Klinger <ak@...klinger.de>, Marcin Wojtas <mw@...ihalf.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>,
	Jonathan Neuschäfer <j.neuschaefer@....net>,
	Linus Walleij <linus.walleij@...aro.org>,
	Paul Cercueil <paul@...pouillou.net>, Wolfram Sang <wsa@...nel.org>,
	Akhil R <akhilrajeev@...dia.com>, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
	netdev@...r.kernel.org, openbmc@...ts.ozlabs.org,
	linux-gpio@...r.kernel.org, linux-mips@...r.kernel.org
Subject: Re: [PATCH v4 2/7] iio: mb1232: relax return value check for IRQ get

On Tue, May 16, 2023 at 10:12:41AM +0300, Matti Vaittinen wrote:
> fwnode_irq_get() was changed to not return 0 anymore.
> 
> Drop check for return value 0.

...

> -	if (data->irqnr <= 0) {
> +	if (data->irqnr < 0) {
>  		/* usage of interrupt is optional */
>  		data->irqnr = -1;
>  	} else {


After this change I'm not sure we need this branch at all, I mean that -errn is
equal to -1 in the code (but needs to be checked for silly checks like == -1).

Hence

Entire excerpt can be replaced with

	if (data->irqnr > 0) {

-- 
With Best Regards,
Andy Shevchenko