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| author | Baolin Wang <baolin.wang@linaro.org> | 2017-12-25 19:10:37 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-27 14:13:04 +0900 |
| commit | 018ea3fea1c6a60778bb95004aa34e4f155d52ab (patch) | |
| tree | 0507d1222b232883fd1e601f73979706d55bfe1f /lib/mpi/mpi-pow.c | |
| parent | 321c5ade5a06cb561459b5190ed5bd36a270ea5e (diff) | |
rtc: Fix overflow when converting time64_t to rtc_time
commit 36d46cdb43efea74043e29e2a62b13e9aca31452 upstream.
If we convert one large time values to rtc_time, in the original formula
'days * 86400' can be overflowed in 'unsigned int' type to make the formula
get one incorrect remain seconds value. Thus we can use div_s64_rem()
function to avoid this situation.
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/mpi/mpi-pow.c')
0 files changed, 0 insertions, 0 deletions