Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Subject: Re: [PATCH] ata: omit superfluous error message
To:     Tang Bin <tangbin@cmss.chinamobile.com>
Cc:     axboe@kernel.dk, linux-ide@vger.kernel.org,
        linux-kernel@vger.kernel.org
From:   Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Message-ID: <7c2974bd-5aa5-b423-ebb4-2fdf8a41f6ca@samsung.com>
Date:   Mon, 1 Jun 2020 12:13:23 +0200
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101
        Thunderbird/60.8.0
MIME-Version: 1.0
In-Reply-To: <20200420135342.11984-1-tangbin@cmss.chinamobile.com>
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset="utf-8"
CMS-TYPE: 201P
References: <CGME20200420135215eucas1p2f807c43a232564804dc864db55bd09a8@eucas1p2.samsung.com>
        <20200420135342.11984-1-tangbin@cmss.chinamobile.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk


Hi,

On 4/20/20 3:53 PM, Tang Bin wrote:
> In the probe function, when get irq failed, the function
> platform_get_irq() logs an error message, so remove
> redundant message here.

platform_get_irq() doesn't log an error message for -EPROBE_DEFER
case so the conversion shouldn't be done automatically for device
drivers which don't support deferred probing (i.e. pata_rb532_cf &
sata_highbank).

Unless there is a proof that -PROBE_DEFER can't happen for these
two drivers this patch shouldn't be applied.

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics

> Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
> ---
>  drivers/ata/pata_rb532_cf.c | 4 +---
>  drivers/ata/sata_highbank.c | 4 +---
>  2 files changed, 2 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/ata/pata_rb532_cf.c b/drivers/ata/pata_rb532_cf.c
> index 479c4b29b..dcde84f57 100644
> --- a/drivers/ata/pata_rb532_cf.c
> +++ b/drivers/ata/pata_rb532_cf.c
> @@ -115,10 +115,8 @@ static int rb532_pata_driver_probe(struct platform_device *pdev)
>  	}
>  
>  	irq = platform_get_irq(pdev, 0);
> -	if (irq <= 0) {
> -		dev_err(&pdev->dev, "no IRQ resource found\n");
> +	if (irq <= 0)
>  		return -ENOENT;
> -	}
>  
>  	gpiod = devm_gpiod_get(&pdev->dev, NULL, GPIOD_IN);
>  	if (IS_ERR(gpiod)) {
> diff --git a/drivers/ata/sata_highbank.c b/drivers/ata/sata_highbank.c
> index ad3893c62..efd1925a9 100644
> --- a/drivers/ata/sata_highbank.c
> +++ b/drivers/ata/sata_highbank.c
> @@ -469,10 +469,8 @@ static int ahci_highbank_probe(struct platform_device *pdev)
>  	}
>  
>  	irq = platform_get_irq(pdev, 0);
> -	if (irq <= 0) {
> -		dev_err(dev, "no irq\n");
> +	if (irq <= 0)
>  		return -EINVAL;
> -	}
>  
>  	hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
>  	if (!hpriv) {
>