Re: [PATCH] rtc: st-lpc: get IRQ via platform_get_irq()

[Patrice CHOTARD <patrice.chotard@foss.st.com>]

On 7/14/26 02:22, Rosen Penev wrote:
> Replace irq_of_parse_and_map() with platform_get_irq(), which resolves
> the interrupt from pdev->dev.of_node directly and returns a positive IRQ
> or a negative errno (it never returns 0). Propagate the error on failure
> instead of the previous open-coded "IRQ missing or invalid" / -EINVAL
> message, so -EPROBE_DEFER is handled correctly. The rtc->irq field is a
> signed short, so the negative error code is preserved.
> 
> np is still used by of_property_read_u32() for "st,lpc-mode", so it is
> not removed.
> 
> Built for ARM (multi_v7_defconfig + CONFIG_RTC_DRV_ST_LPC) with LLVM=1;
> drivers/rtc/rtc-st-lpc.o compiles cleanly.
> 
> Assisted-by: opencode:hy3-free
> Signed-off-by: Rosen Penev <rosenp@gmail.com>
> ---
>  drivers/rtc/rtc-st-lpc.c | 9 +++------
>  1 file changed, 3 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/rtc/rtc-st-lpc.c b/drivers/rtc/rtc-st-lpc.c
> index c6d4522411b3..ae79ddf24f37 100644
> --- a/drivers/rtc/rtc-st-lpc.c
> +++ b/drivers/rtc/rtc-st-lpc.c
> @@ -18,7 +18,6 @@
>  #include <linux/kernel.h>
>  #include <linux/module.h>
>  #include <linux/of.h>
> -#include <linux/of_irq.h>
>  #include <linux/platform_device.h>
>  #include <linux/rtc.h>
>  
> @@ -212,11 +211,9 @@ static int st_rtc_probe(struct platform_device *pdev)
>  	if (IS_ERR(rtc->ioaddr))
>  		return PTR_ERR(rtc->ioaddr);
>  
> -	rtc->irq = irq_of_parse_and_map(np, 0);
> -	if (!rtc->irq) {
> -		dev_err(&pdev->dev, "IRQ missing or invalid\n");
> -		return -EINVAL;
> -	}
> +	rtc->irq = platform_get_irq(pdev, 0);
> +	if (rtc->irq < 0)
> +		return rtc->irq;
>  
>  	ret = devm_request_irq(&pdev->dev, rtc->irq, st_rtc_handler,
>  			       IRQF_NO_AUTOEN, pdev->name, rtc);

Hi Rosen

Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>

Thanks
Patrice