From: Syam Sidhardhan <syamsidhardh@gmail.com>
Date: Sun, 24 Feb 2013 23:03:25 +0000 (+0530)
Subject: s3c-adc-battery: Fix possible NULL pointer dereference
X-Git-Tag: upstream/snapshot3+hdmi~5026^2~40
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c6cc9fc9d42ec82da2c770f0bef1488dc467f29c;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

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>
---

diff --git a/drivers/power/s3c_adc_battery.c b/drivers/power/s3c_adc_battery.c
index d2ca989..5948ce0 100644
--- a/drivers/power/s3c_adc_battery.c
+++ b/drivers/power/s3c_adc_battery.c
@@ -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) {