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SubjectRe: [PATCH 4/5] drivers/rtc/pl030: Replace deprecated rtc_tm_to_time() and rtc_time_to_tm()
On Wed, Apr 15, 2015 at 05:20:10PM +0800, Xunlei Pang wrote:
> From: Xunlei Pang <>
> The driver uses deprecated rtc_tm_to_time() and rtc_time_to_tm(),
> which will overflow in year 2106 on 32-bit machines.
> This patch solves this by:
> - Replacing rtc_tm_to_time() with rtc_tm_to_time64()
> - Replacing rtc_time_to_tm() with rtc_time64_to_tm()
> Cc: Russell King <>
> Signed-off-by: Xunlei Pang <>


How does this fix anything? The RTC contains 32-bit registers. Even
if you convert the struct tm to a 64-bit time, you can only write the
lowest 32-bits to the hardware. You can onyl read the lowest 32-bits
from the hardware too.

This patch solves /nothing/. In fact, it hides the fact that this RTC
is unable to represent dates after 2106.

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according to

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