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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Linux ACPI <linux-acpi@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Hans de Goede <hdegoede@redhat.com>,
	Mika Westerberg <mika.westerberg@linux.intel.com>
Subject: Re: [PATCH] ACPI: glue: Use acpi_device_adr() in acpi_find_child_device()
Date: Wed, 27 Oct 2021 20:35:42 +0300	[thread overview]
Message-ID: <YXmN7tnG6fddKhTJ@smile.fi.intel.com> (raw)
In-Reply-To: <CAJZ5v0j43dhVcbsKyJ8BZjeBbXHNFG-Vtv-UtsJwFBYP4usNFQ@mail.gmail.com>

On Wed, Oct 27, 2021 at 07:23:43PM +0200, Rafael J. Wysocki wrote:
> On Wed, Oct 27, 2021 at 7:17 PM Andy Shevchenko
> <andriy.shevchenko@linux.intel.com> wrote:
> > On Wed, Oct 27, 2021 at 06:59:06PM +0200, Rafael J. Wysocki wrote:

...

> See acpi_set_pnp_ids().
> 
> adev->pnp.bus_addres is the address value and
> adev->pnp.type.bus_address is a flag that is set to 1 when _ADR is
> valid.
> 
> > IIUC _ADR == 0 is a valid value and children may have it like this.
> 
> That's true.
> 
> > I believe this change will break the working things (first comes to my mind
> > is drivers/mfd/intel_quark_i2c_gpio.c).
> 
> I don't think so.

With your explanation I see where my logic is wrong. Thanks!

-- 
With Best Regards,
Andy Shevchenko



      reply	other threads:[~2021-10-27 18:35 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-27 16:59 Rafael J. Wysocki
2021-10-27 17:17 ` Andy Shevchenko
2021-10-27 17:23   ` Rafael J. Wysocki
2021-10-27 17:35     ` Andy Shevchenko [this message]

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