linux-kernel - Re: [REGRESSION] in 6.18-rc1, failed to query a GPIO using a name in ACPI

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Message-ID: <aPPnC6gSP4r46gBV@ashevche-desk.local>
Date: Sat, 18 Oct 2025 22:14:19 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Sunil V L <sunilvl@...tanamicro.com>
Cc: Thomas Richard <thomas.richard@...tlin.com>, rafael@...nel.org,
	regressions@...ts.linux.dev, lenb@...nel.org,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	apatel@...tanamicro.com,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	Daniele Cleri <DanieleCleri@...on.eu>
Subject: Re: [REGRESSION] in 6.18-rc1, failed to query a GPIO using a name in
 ACPI

On Fri, Oct 17, 2025 at 03:32:26PM +0530, Sunil V L wrote:
> On Fri, Oct 17, 2025 at 10:50:05AM +0200, Thomas Richard wrote:
> > On 10/17/25 12:22 AM, Sunil V L wrote:
> > > On Thu, Oct 16, 2025 at 02:47:40PM +0200, Thomas Richard wrote:
> > >>
> > >> While testing the AAEON UpBoard MFD driver with the v6.18-rc1 release, I
> > >> noticed a regression. The driver does not probe anymore and I get the
> > >> following error:
> > >>
> > >> [    1.977831] upboard-fpga AANT0F01:00: error -ENOENT: Failed to
> > >> initialize FPGA common GPIOs
> > >> [    1.977854] upboard-fpga AANT0F01:00: probe with driver upboard-fpga
> > >> failed with error -2
> > >>
> > >> The driver fails to get some GPIOs using a name [1] in the ACPI tables [2].
> > >>
> > >> I did a bisect and I found the commit which introduced the regression:
> > >> e121be784d35 ("ACPI: property: Refactor acpi_fwnode_get_reference_args()
> > >> to support nargs_prop")
> > > 
> > > Could you please try with below change and see if it resolves the issue?
> > > 
> > > diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
> > > index 1b997a5497e7..43d5e457814e 100644
> > > --- a/drivers/acpi/property.c
> > > +++ b/drivers/acpi/property.c
> > > @@ -1107,7 +1107,7 @@ int __acpi_node_get_property_reference(const struct fwnode_handle *fwnode,
> > >                                        size_t num_args,
> > >                                        struct fwnode_reference_args *args)
> > >  {
> > > -       return acpi_fwnode_get_reference_args(fwnode, propname, NULL, index, num_args, args);
> > > +       return acpi_fwnode_get_reference_args(fwnode, propname, NULL, num_args, index, args);
> > >  }
> > 
> > Yes your change fixes the issue !!
> 
> Thanks for confirming the fix!
> 
> I'll send out the patch shortly and include your Tested-by tag.
> 
> Apologies for the earlier issue, and thank you for your help.

I haven't received anything. Have you sent anything? Am I Cc'ed?

-- 
With Best Regards,
Andy Shevchenko