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s3c-adc-battery: Fix possible NULL pointer dereference 

Check for (bat == NULL) has to be done before accessing bat

Signed-off-by: Syam Sidhardhan <s.syam@samsung.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
This commit is contained in:
Syam Sidhardhan 2013-02-25 04:33:25 +05:30 committed by Anton Vorontsov
parent 9239ebcffb
commit c6cc9fc9d4
1 changed files with 5 additions and 2 deletions
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7
drivers/power/s3c_adc_battery.c
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@ -145,14 +145,17 @@ static int s3c_adc_bat_get_property(struct power_supply *psy,
int new_level;
int full_volt;
const struct s3c_adc_bat_thresh *lut = bat->pdata->lut_noac;
unsigned int lut_size = bat->pdata->lut_noac_cnt;
const struct s3c_adc_bat_thresh *lut;
unsigned int lut_size;
if (!bat) {
dev_err(psy->dev, "no battery infos ?!\n");
return -EINVAL;
}
lut = bat->pdata->lut_noac;
lut_size = bat->pdata->lut_noac_cnt;
if (bat->volt_value < 0 || bat->cur_value < 0 ||
jiffies_to_msecs(jiffies - bat->timestamp) >
BAT_POLL_INTERVAL) {