Hello,
as described in the commit log of the two commits the rtc-mt6397 driver relies on these fixes as soon as it should store dates later than 2027-12-31. On one of the patches has a Fixes line, so this submission is done to ensure that both patches are backported.
The patches sent in reply to this mail are (trivial) backports to v6.15.1, they should get backported to the older stable kernels, too, to (somewhat) ensure that in 2028 no surprises happen. `git am` is able to apply the patches as is to 6.14.y, 6.12.y, 6.6.y, 6.1.y and 5.15.y.
5.10 and 5.4 need an adaption, I didn't look into that yet but can follow up with backports for these.
The two fixes were accompanied by 3 test updates:
46351921cbe1 ("rtc: test: Emit the seconds-since-1970 value instead of days-since-1970") da62b49830f8 ("rtc: test: Also test time and wday outcome of rtc_time64_to_tm()") ccb2dba3c19f ("rtc: test: Test date conversion for dates starting in 1900")
that cover one of the patches. Would you consider it sensible to backport these, too?
Best regards Uwe
Alexandre Mergnat (2): rtc: Make rtc_time64_to_tm() support dates before 1970 rtc: Fix offset calculation for .start_secs < 0
drivers/rtc/class.c | 2 +- drivers/rtc/lib.c | 24 +++++++++++++++++++----- 2 files changed, 20 insertions(+), 6 deletions(-)
base-commit: 3ef49626da6dd67013fc2cf0a4e4c9e158bb59f7