Re: mfd: intel_soc_pmic_bxtwc: irq 0 issue, tmu and typec components fail to probe.

[Greg KH <gregkh@linuxfoundation.org>]

On Sat, Aug 10, 2024 at 01:27:18PM +0800, Zhang Ning wrote:
> On Fri, Aug 09, 2024 at 05:09:49PM +0300, Andy Shevchenko wrote:
> > On Fri, Aug 09, 2024 at 08:53:24PM +0800, Zhang Ning wrote:
> > > On Fri, Aug 09, 2024 at 03:33:33PM +0300, Andy Shevchenko wrote:
> > > > On Fri, Aug 09, 2024 at 08:02:43PM +0800, Zhang Ning wrote:
> > > > > Hi, Greg & Rafael
> > > > > 
> > > > > recently, when I try to enable mfd components for intel_soc_pmic_bxtwc
> > > > > for debian kernel[0]. I find tmu and typec failed to probe.
> > > > > 
> > > > > after check source code, I find irq for these two devices are 0, when
> > > > > use platform_get_irq, it will alway fail.
> > > > > 
> > > > > 	if (WARN(!ret, "0 is an invalid IRQ number\n"))
> > > > > 		return -EINVAL;
> > > > > 	return ret;
> > > > > 
> Hi, Greg
> 	One more question, I don't understand why 0 is not a valid IRQ
> 	number for platform device?

Please search the archives for many many many discussions about this.

thanks,

greg k-h