From: sashiko-bot@kernel.org
To: "Hamza Mahfooz" <hamzamahfooz@linux.microsoft.com>,
linux-rtc@vger.kernel.org
Cc: "Alexandre Belloni" <alexandre.belloni@bootlin.com>
Subject: Re: [PATCH v2 1/2] ACPI: TAD: introduce acpi_has_rtc()
Date: Fri, 23 Oct 2026 21:32:08 +0000 [thread overview]
Message-ID: <sashiko-outbox-183262@kernel.org> (raw)
In-Reply-To: <20261023212218.2568858-1-hamzamahfooz@linux.microsoft.com>
> The same RTC may also be accessible by other means, like the EFI
> GetTime() and SetTime() runtime services used by rtc-efi, which are best
> avoided if there is a native ACPI interface to the RTC.
>
> To allow other RTC drivers to stand down in that case, add an exported
> helper, acpi_has_rtc(), that returns true if there is a TAD the driver
> will register an RTC class device for.
>
> The helper looks for a platform device matching the driver's ID table
> whose _GCP indicates real time support, like acpi_tad_probe() checks,
> instead of checking whether the driver has bound to such a device, so
> that callers need not depend on the order in which drivers are probed.
>
> Suggested-by: Ard Biesheuvel <ardb@kernel.org>
> Signed-off-by: Hamza Mahfooz <hamzamahfooz@linux.microsoft.com>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261023212218.2568858-1-hamzamahfooz@linux.microsoft.com?part=1
prev parent reply other threads:[~2026-10-23 21:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-23 21:22 [PATCH v2 1/2] ACPI: TAD: introduce acpi_has_rtc() Hamza Mahfooz
2026-10-23 21:22 ` [PATCH v2 2/2] rtc: efi: defer to the ACPI TAD if it can drive the RTC Hamza Mahfooz
2026-10-23 21:30 ` sashiko-bot
2026-10-26 14:34 ` Hamza Mahfooz
2026-10-23 21:32 ` sashiko-bot [this message]
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