linux-kernel - Re: [PATCH 1/2] irqchip/aspeed-i2c-ic: Fix irq_of_parse_and

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Message-ID: <3eb57a4c-95b6-0bf5-aa1a-90ee2fd336e1@linaro.org>
Date:   Sat, 23 Apr 2022 11:30:53 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Brendan Higgins <brendanhiggins@...gle.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Joel Stanley <joel@....id.au>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Andrew Jeffery <andrew@...id.au>,
        Eddie James <eajames@...ux.ibm.com>, linux-i2c@...r.kernel.org,
        openbmc@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-aspeed@...ts.ozlabs.org
Subject: Re: [PATCH 1/2] irqchip/aspeed-i2c-ic: Fix irq_of_parse_and_map()
 return value

On 22/04/2022 12:45, Krzysztof Kozlowski wrote:
> The irq_of_parse_and_map() returns 0 on failure, not a negative ERRNO.
> 
> Fixes: f48e699ddf70 ("irqchip/aspeed-i2c-ic: Add I2C IRQ controller for Aspeed")
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---
>  drivers/irqchip/irq-aspeed-i2c-ic.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/irqchip/irq-aspeed-i2c-ic.c b/drivers/irqchip/irq-aspeed-i2c-ic.c
> index a47db16ff960..cef1291ae783 100644
> --- a/drivers/irqchip/irq-aspeed-i2c-ic.c
> +++ b/drivers/irqchip/irq-aspeed-i2c-ic.c
> @@ -77,7 +77,7 @@ static int __init aspeed_i2c_ic_of_init(struct device_node *node,
>  	}
>  
>  	i2c_ic->parent_irq = irq_of_parse_and_map(node, 0);
> -	if (i2c_ic->parent_irq < 0) {
> +	if (!i2c_ic->parent_irq) {
>  		ret = i2c_ic->parent_irq;

This is wrong (same in patch 2). I will send a v2.


Best regards,
Krzysztof