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powerpc: use time64_t in update_persistent_clock

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update_persistent_clock() is deprecated because it suffers from overflow
in 2038 on 32-bit architectures. This changes powerpc to use the
update_persistent_clock64() replacement, and to pass down 64-bit
timestamps consistently.

This is now simpler, as we no longer have to worry about the offset
numbers in tm_year and tm_mon that are different between the Linux
conventions and RTAS.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Arnd Bergmann
2018-04-23 10:36:41 +02:00
committed by Michael Ellerman
parent 5bfd643583
commit 5235afa89a
3 changed files with 9 additions and 21 deletions
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6
arch/powerpc/kernel/time.c
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@@ -811,16 +811,14 @@ void __init generic_calibrate_decr(void)
}
}
int update_persistent_clock(struct timespec now)
int update_persistent_clock64(struct timespec64 now)
{
struct rtc_time tm;
if (!ppc_md.set_rtc_time)
return -ENODEV;
to_tm(now.tv_sec + 1 + timezone_offset, &tm);
tm.tm_year -= 1900;
tm.tm_mon -= 1;
rtc_time64_to_tm(now.tv_sec + 1 + timezone_offset, &tm);
return ppc_md.set_rtc_time(&tm);
}