From: Juergen Gross <jgross@suse.com>
To: "Rafael J. Wysocki" <rafael@kernel.org>,
Linux ACPI <linux-acpi@vger.kernel.org>
Cc: Stefano Stabellini <sstabellini@kernel.org>,
Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>,
LKML <linux-kernel@vger.kernel.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: Re: [PATCH v1] ACPI: PAD: xen: Check ACPI_COMPANION() against NULL
Date: Tue, 12 May 2026 18:32:56 +0200 [thread overview]
Message-ID: <372de085-13e8-46ec-9c48-e56c2f8d504f@suse.com> (raw)
In-Reply-To: <3427762.aeNJFYEL58@rafael.j.wysocki>
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On 12.05.26 18:25, Rafael J. Wysocki wrote:
> From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
>
> Every platform driver can be forced to match a device that doesn't match
> its list of device IDs because of device_match_driver_override(), so
> platform drivers that rely on the existence of a device's ACPI companion
> object need to verify its presence.
>
> Accordingly, add a requisite ACPI_COMPANION() check against NULL to the
> Xen variant of the ACPI processor aggregator device (PAD) driver.
>
> Fixes: 112b2f978afe ("ACPI: PAD: xen: Convert to a platform driver")
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Juergen Gross <jgross@suse.com>
Juergen
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prev parent reply other threads:[~2026-05-12 16:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-12 16:25 [PATCH v1] ACPI: PAD: xen: Check ACPI_COMPANION() against NULL Rafael J. Wysocki
2026-05-12 16:32 ` Juergen Gross [this message]
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