Re: [PATCH -next] remoteproc: stm32: Clean up redundant dev_err_probe()

[Arnaud POULIQUEN <arnaud.pouliquen@foss.st.com>]

Hi,

On 8/2/23 11:51, Chen Jiahao wrote:
> Referring to platform_get_irq()'s definition, the return value has
> already been checked if ret < 0, and printed via dev_err_probe().
> Calling dev_err_probe() one more time outside platform_get_irq()
> is obviously redundant.
> 
> Removing dev_err_probe() outside platform_get_irq() to clean up
> above problem.
> 
> Signed-off-by: Chen Jiahao <chenjiahao16@huawei.com>
> ---
>  drivers/remoteproc/stm32_rproc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c
> index 98234b44f038..a09eeb83ea5c 100644
> --- a/drivers/remoteproc/stm32_rproc.c
> +++ b/drivers/remoteproc/stm32_rproc.c
> @@ -714,7 +714,7 @@ static int stm32_rproc_parse_dt(struct platform_device *pdev,
>  
>  	irq = platform_get_irq(pdev, 0);
>  	if (irq == -EPROBE_DEFER)
> -		return dev_err_probe(dev, irq, "failed to get interrupt\n");
> +		return irq;

The IRQ is optional so using platform_get_irq_optional seems a better option to me.

-  	irq = platform_get_irq(pdev, 0);
+  	irq = platform_get_irq_optional(pdev, 0);
>  	if (irq == -EPROBE_DEFER)
>		return dev_err_probe(dev, irq, "failed to get interrupt\n");

Thanks,
Arnaud

>  
>  	if (irq > 0) {
>  		err = devm_request_irq(dev, irq, stm32_rproc_wdg, 0,