linux-kernel - Re: [PATCH 1/2] ata: delete redundant printing of return value

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Date:   Sat, 13 Mar 2021 13:04:31 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...il.com>
To:     Wang Qing <wangqing@...o.com>, Hans de Goede <hdegoede@...hat.com>,
        Jens Axboe <axboe@...nel.dk>, linux-ide@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] ata: delete redundant printing of return value

Hello!

   The patch subject should reflect the exact patch locus, e.g. "ata: libahci_platform:
delete redundant printing of return value".

On 3/13/21 10:46 AM, Wang Qing wrote:

> platform_get_irq() has already checked and printed the return value, 
> the printing here is nothing special, it is not necessary at all.
> 
> Signed-off-by: Wang Qing <wangqing@...o.com>
> ---
>  drivers/ata/libahci_platform.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c
> index de638da..2e7ea75
> --- a/drivers/ata/libahci_platform.c
> +++ b/drivers/ata/libahci_platform.c
> @@ -582,11 +582,8 @@ int ahci_platform_init_host(struct platform_device *pdev,
>  	int i, irq, n_ports, rc;
>  
>  	irq = platform_get_irq(pdev, 0);
> -	if (irq <= 0) {
> -		if (irq != -EPROBE_DEFER)
> -			dev_err(dev, "no irq\n");
> +	if (irq <= 0)
>  		return irq;
> -	}

   This code has more serious problem: it returns 0 on error as if it was success.
Should be changed to *if* (irq < 0) (in a separate patch).

MBR, Sergei