hwmon: (ina2xx) Fix various overflow issues

Sashiko reports several integer overflow problems in the ina2xx driver
caused by unbounded multiplications and inadequate types for intermediate
calculations.

Specifically:
- In ina2xx_get_value(), the return type is changed from int to long.
  Intermediate calculations for current are now performed using 64-bit
  types to prevent 32-bit integer overflow before the division by 1000.
- When calculating power in ina2xx_get_value() and
  sy24655_average_power_read(), interim values are cast to u64 and clamped
  to LONG_MAX. This prevents overflow when regval or accumulator_24 is
  multiplied by power_lsb_uW.
- In ina226_alert_to_reg(), the clamping logic is rewritten using min_t().
  This safely avoids integer overflows when scaling user-provided values
  for shunt voltage, bus voltage, power, and current limits.

Cc: Loic Poulain <loic.poulain@oss.qualcomm.com>
Fixes: ab7fbee452be ("hwmon: (ina2xx) Fix various overflow issues")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

0 files changed, 0 insertions, 0 deletions