linux-kernel - Re: [RFC PATCH 1/3] efi-rtc: Remove wakeup functionality

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Message-ID: <dade7d17-d45d-455e-a43c-01e9ea95c3b4@gmail.com>
Date: Mon, 14 Jul 2025 02:13:22 -0400
From: Demi Marie Obenour <demiobenour@...il.com>
To: Ard Biesheuvel <ardb+git@...gle.com>, linux-kernel@...r.kernel.org
Cc: linux-arm-kernel@...ts.infradead.org, Ard Biesheuvel <ardb@...nel.org>,
 Heinrich Schuchardt <heinrich.schuchardt@...onical.com>,
 Feng Tang <feng.tang@...ux.alibaba.com>,
 Alexandre Belloni <alexandre.belloni@...tlin.com>,
 Juergen Gross <jgross@...e.com>, Stefano Stabellini
 <sstabellini@...nel.org>,
 Oleksandr Tyshchenko <oleksandr_tyshchenko@...m.com>,
 Sunil V L <sunilvl@...tanamicro.com>, Bibo Mao <maobibo@...ngson.cn>,
 linux-rtc@...r.kernel.org, linux-efi@...r.kernel.org,
 xen-devel@...ts.xenproject.org, x86@...nel.org,
 linux-riscv@...ts.infradead.org, loongarch@...ts.linux.dev
Subject: Re: [RFC PATCH 1/3] efi-rtc: Remove wakeup functionality

On 7/14/25 02:08, Ard Biesheuvel wrote:
> From: Ard Biesheuvel <ardb@...nel.org>
> 
> The EFI rtc driver is used by non-x86 architectures only, and exposes
> the get/set wakeup time functionality provided by the underlying
> platform. This is usually broken on most platforms, and not widely used
> to begin with [if at all], so let's just remove it.
systemd uses the underlying functionality: a timer can wake the system up.
I have no idea if that is implemented in terms of this function, though.
-- 
Sincerely,
Demi Marie Obenour (she/her/hers)
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