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-rw-r--r--drivers/input/touchscreen/ads7846.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index ce6f48c..efbbbe4 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -461,10 +461,11 @@ static ssize_t ads7846_disable_store(struct device *dev,
const char *buf, size_t count)
{
struct ads7846 *ts = dev_get_drvdata(dev);
- char *endp;
- int i;
+ long i;
+
+ if (strict_strtoul(buf, 10, &i))
+ return -EINVAL;
- i = simple_strtoul(buf, &endp, 10);
spin_lock_irq(&ts->lock);
if (i)
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