On Sat, Jul 13, 2024 at 02:34:02PM -0700, Guenter Roeck wrote:
> Using DIV_ROUND_CLOSEST() on an unbound value can result in underflows.
> Indeed, module test scripts report:
>
> temp1_max: Suspected underflow: [min=0, read 255000, written -9223372036854775808]
> temp1_crit: Suspected underflow: [min=0, read 255000, written -9223372036854775808]
>
> Fix by introducing an extra set of clamping.
>
> Fixes: 5372d2d71c46 ("hwmon: Driver for Maxim MAX6697 and compatibles")
> Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Reviewed-by: Tzung-Bi Shih <tzungbi@xxxxxxxxxx>
