Re: [PATCH] ata: pata_octeon_cf: Use common error handling code in octeon_cf_probe()

[Sergey Shtylyov]

On 9/17/24 20:43, Sergey Shtylyov wrote:

>> From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
>> 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@xxxxxxxxxxxxxxxxxxxxx>
>> ---
>>  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.

   Another option is to place this error patch somewhere at the end
of this function but I think I prefer the new APIs.

[...]

MBR, Sergey