[PATCH 11/22] usb: host: ohci-at91: deny IRQ0

[Alexander Dahl]

Hello Sergey,

Am Mon, Oct 18, 2021 at 09:39:19PM +0300 schrieb Sergey Shtylyov:
> If platform_get_irq() returns IRQ0 (considered invalid according to Linus)
> the driver blithely passes it to usb_add_hcd() that treats IRQ0 as no IRQ
> at all. Deny IRQ0 right away, returning -EINVAL from the probe() method...
> 
> Fixes: 60bbfc84b6d9 ("USB OHCI controller support for PNX4008")
> Signed-off-by: Sergey Shtylyov <s.shtylyov at omp.ru>
> ---
>  drivers/usb/host/ohci-nxp.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/usb/host/ohci-nxp.c b/drivers/usb/host/ohci-nxp.c
> index 85878e8ad331..afb9c2fc85c3 100644
> --- a/drivers/usb/host/ohci-nxp.c
> +++ b/drivers/usb/host/ohci-nxp.c
> @@ -215,6 +215,10 @@ static int ohci_hcd_nxp_probe(struct platform_device *pdev)
>  		ret = -ENXIO;
>  		goto fail_resource;
>  	}
> +	if (!irq) {
> +		ret = -EINVAL;
> +		goto fail_resource;
> +	}
>  
>  	ohci_nxp_start_hc();
>  	platform_set_drvdata(pdev, hcd);

Subject refers to at91 while content is about nxp.

Greets
Alex