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linux/kernel
Wen Yang efc95f2ef7 timekeeping: Prevent 32bit truncation in scale64_check_overflow()
[ Upstream commit 4cbbc3a0ee ]

While unlikely the divisor in scale64_check_overflow() could be >= 32bit in
scale64_check_overflow(). do_div() truncates the divisor to 32bit at least
on 32bit platforms.

Use div64_u64() instead to avoid the truncation to 32-bit.

[ tglx: Massaged changelog ]

Signed-off-by: Wen Yang <wenyang@linux.alibaba.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200120100523.45656-1-wenyang@linux.alibaba.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-10-01 13:17:38 +02:00
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2020-09-17 13:47:56 +02:00
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