Messages in this thread | | | From | "Luck, Tony" <> | Subject | RE: [PATCH 1/2] rtc/ia64: remove legacy efirtc driver | Date | Thu, 24 Oct 2019 16:57:28 +0000 |
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> arch/ia64 has a read_persistent_clock64() function, so it ends up reading > the system time regardless of the RTC driver or CONFIG_RTC_HCTOSYS. > > As ia64 sets neither ARCH_HIBERNATION_POSSIBLE nor > ARCH_SUSPEND_POSSIBLE, so we could just remove the > read_persistent_clock64() and efi_gettimeofday(), relying instead > on user space (/sbin/hwclock) or CONFIG_RTC_HCTOSYS.
Seems weird. ia64 has always assumed from day 1 that it is running on a UEFI capable platorm (well at day 1 it was called "EFI", the "U" came later).
So read_persistent_clock64() just calls EFI directly to get the time.
Seems simpler than worrying about having the right drivers and CONFIG bits set.
-Tony
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