linux-kernel - Re: [PATCH] ata: pata_octeon_cf: Use common error handling code in octeon_cf

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Message-ID: <2e38a924-a68a-8d19-8c3a-c19708f9ab74@omp.ru>
Date: Tue, 17 Sep 2024 20:43:09 +0300
From: Sergey Shtylyov <s.shtylyov@....ru>
To: Markus Elfring <Markus.Elfring@....de>, <linux-ide@...r.kernel.org>,
	Damien Le Moal <dlemoal@...nel.org>, Niklas Cassel <cassel@...nel.org>
CC: LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ata: pata_octeon_cf: Use common error handling code in
 octeon_cf_probe()

On 9/17/24 14:50, Markus Elfring wrote:

> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Tue, 17 Sep 2024 13:43:24 +0200
> 
> Add a label so that a bit of exception handling can be better reused

   s/exception/error/.

> in a subsequent if branch of this function implementation.
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
> ---
>  drivers/ata/pata_octeon_cf.c | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/ata/pata_octeon_cf.c b/drivers/ata/pata_octeon_cf.c
> index 0bb9607e7348..62289f6aef95 100644
> --- a/drivers/ata/pata_octeon_cf.c
> +++ b/drivers/ata/pata_octeon_cf.c
> @@ -848,14 +848,13 @@ static int octeon_cf_probe(struct platform_device *pdev)
>  				struct resource *res_dma;
>  				int i;
>  				res_dma = platform_get_resource(dma_dev, IORESOURCE_MEM, 0);
> -				if (!res_dma) {
> -					put_device(&dma_dev->dev);
> -					of_node_put(dma_node);
> -					return -EINVAL;
> -				}
> +				if (!res_dma)
> +					goto put_device;
> +
>  				cf_port->dma_base = (u64)devm_ioremap(&pdev->dev, res_dma->start,
>  									 resource_size(res_dma));
>  				if (!cf_port->dma_base) {
> +put_device:

   Ugh... :-/
   Please use the new-fangled *devm_platform_ioremap_resource() instead of those
old-fashioned APIs.

[...]

MBR, Sergey