Re: [PATCH v1 6/8] x86: rtc: Drop PNP device check
From: Dave Hansen
Date: Wed Feb 25 2026 - 13:05:22 EST
On 2/23/26 07:31, Rafael J. Wysocki wrote:
> Previous changes effectively prevented PNP devices from being created
> for the CMOS RTC on x86 with ACPI.
>
> Although in principle a CMOS RTC PNP device may exist on an x86 system
> without ACPI (that is, an x86 system where there is no ACPI at all, not
> one booted with ACPI disabled), such systems were there in the field ~30
> years ago and most likely they would not be able to run a contemporary
> Linux kernel.
>
> For the above reasons, drop the PNP device check from add_rtc_cmos().
If someone had one of these devices, what would they see after applying
this? Would they just not be able to detect the RTC any longer?
In any case, this does seem obscure enough to not worry about any more:
Acked-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> # x86