apm_power: check I.intval for zero value, we use it as the divisor

Signed-off-by: Anton Vorontsov <cbou@mail.ru>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/power/apm_power.c b/drivers/power/apm_power.c
index a832a9a05c66..a4892275659d 100644
--- a/drivers/power/apm_power.c
+++ b/drivers/power/apm_power.c
@@ -133,6 +133,9 @@ static int do_calculate_time(int status, enum apm_source source)
                         return -1;
         }
 
+        if (!I.intval)
+                return 0;
+
         switch (source) {
         case SOURCE_CHARGE:
                 full_prop = POWER_SUPPLY_PROP_CHARGE_FULL;