[Bug 201593] usr/src/sys/dev/iicbus/max6690.c:372: poor error checking ?

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=201593

            Bug ID: 201593
           Summary: usr/src/sys/dev/iicbus/max6690.c:372: poor error
                    checking ?
           Product: Base System
           Version: 10.2-BETA1
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: misc
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: dcb314 at hotmail.com

[usr/src/sys/dev/iicbus/max6690.c:372]: (style) Checking if unsigned variable
'temp' is less than zero.

Source code is

   temp = max6690_sensor_read(sens);
    if (temp < 0)
        return (EIO);

Function max6690_sensor_read has an int return value, which should be sanity
checked >= 0, before writing into unsigned variable temp.

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