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hwmon: (lm87) Fix vrm write operation

PATCH In review Axel Lin 1 participant 1 message Aug 6, 2014 Hardware monitoring

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Axel Lin

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PATCH 5/10 hwmon: (lm87) Fix vrm write operation

vrm is an u8, so the written value needs to be limited to [0, 255].

Signed-off-by Axel Lin <[email protected]>
---
 drivers/hwmon/lm87.c | 4 ++++
 1 file changed, 4 insertions(+)
drivers/hwmon/lm87.c +4 -0
index ba1d83d..a5e2958 100644
@@ -617,6 +617,10 @@ static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
 	err = kstrtoul(buf, 10, &val);
 	if (err)
 		return err;
+
+	if (val > 255)
+		return -EINVAL;
+
 	data->vrm = val;
 	return count;
 }
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1.9.1




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