linux-kernel - Re: [PATCH] clocksource/drivers/oxnas: fix error check return value of irq_of_parse_and

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Date:   Fri, 22 Apr 2022 18:22:18 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     cgel.zte@...il.com, daniel.lezcano@...aro.org, tglx@...utronix.de
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-oxnas@...ups.io, Lv Ruyi <lv.ruyi@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: Re: [PATCH] clocksource/drivers/oxnas: fix error check return value
 of irq_of_parse_and_map()

On 22/04/2022 10:48, cgel.zte@...il.com wrote:
> From: Lv Ruyi <lv.ruyi@....com.cn>
> 
> The irq_of_parse_and_map() function returns 0 on failure, and does not
> return an negative value.
> 
> Fixes: 	89355274e1f7 ("clocksource/drivers/oxnas-rps: Add Oxford Semiconductor RPS Dual Timer")
> Reported-by: Zeal Robot <zealci@....com.cn>
> Signed-off-by: Lv Ruyi <lv.ruyi@....com.cn>
> ---
>   drivers/clocksource/timer-oxnas-rps.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/clocksource/timer-oxnas-rps.c b/drivers/clocksource/timer-oxnas-rps.c
> index 56c0cc32d0ac..d514b44e67dd 100644
> --- a/drivers/clocksource/timer-oxnas-rps.c
> +++ b/drivers/clocksource/timer-oxnas-rps.c
> @@ -236,7 +236,7 @@ static int __init oxnas_rps_timer_init(struct device_node *np)
>   	}
>   
>   	rps->irq = irq_of_parse_and_map(np, 0);
> -	if (rps->irq < 0) {
> +	if (!rps->irq) {
>   		ret = -EINVAL;
>   		goto err_iomap;
>   	}

Reviewed-by: Neil Armstrong <narmstrong@...libre.com>