Hello Jonghwa Lee,
The patch 5c49a6256bed: "charger-manager: Modify the way of checking
battery's temperature" from Dec 18, 2013, leads to the following
static checker warning:
drivers/power/charger-manager.c:563 cm_get_battery_temperature()
warn: passing casted pointer 'temp' to 'thermal_zone_get_temp()' 32 vs
64.
drivers/power/charger-manager.c
554 static int cm_get_battery_temperature(struct charger_manager *cm,
555 int *temp)
556 {
557 int ret;
558
559 if (!cm->desc->measure_battery_temp)
560 return -ENODEV;
561
562 #ifdef CONFIG_THERMAL
563 ret = thermal_zone_get_temp(cm->tzd_batt, (unsigned long
*)temp);
^^^^^^^^^^^^^^^^^^^^^^
This will corrupt memory on 64 bit systems.
564 if (!ret)
565 /* Calibrate temperature unit */
566 *temp /= 100;
567 #else
568 ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
569 POWER_SUPPLY_PROP_TEMP,
570 (union power_supply_propval *)temp);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
This will corrupt memory as well. Some of the callers pass an actual
32 bit integer and not a 64 bit union.
571 #endif
572 return ret;
573 }
regards,
dan carpenter
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