Re: [PATCH V2 01/10] accel/amdxdna: Add a new driver for AMD AI Engine

[Lizhi Hou <lizhi.hou@amd.com>]

On 8/7/24 04:06, Markus Elfring wrote:
> If you temporarily find the circumstances too challenging for applications
> of scope-based resource management, I suggest to use the following statements instead
> (so that a bit of redundant code can be avoided).
>
>
>
> …
>> +++ b/drivers/accel/amdxdna/aie2_pci.c
>> @@ -0,0 +1,182 @@
> …
>> +static int aie2_init(struct amdxdna_dev *xdna)
>> +{
> …
>> +	release_firmware(fw);
>> +	return 0;
> 	ret = 0;
> 	goto release_fw;

I believe compiler will do the optimization. And I prefer current code 
which only error branch jumps to the corresponding cleanup.


Thanks,

Lizhi

>
> …
>> +release_fw:
>> +	release_firmware(fw);
>> +
>> +	return ret;
>> +}
> …
>
>
> Otherwise (in case further collateral evolution will become more desirable):
> …
>> +static int aie2_init(struct amdxdna_dev *xdna)
>> +{
> …
>> +	const struct firmware *fw;
> I propose to take another software design option better into account.
>
> * You may reduce the scope of such a local variable.
>
> * How do you think about to use the attribute “__free(firmware)”?
>    https://elixir.bootlin.com/linux/v6.11-rc2/source/include/linux/firmware.h#L214
>
> …
>> +	ret = request_firmware(&fw, ndev->priv->fw_path, &pdev->dev);
> …
>
>
> Regards,
> Markus