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hwmon: (w83627hf) 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 8/10 hwmon: (w83627hf) 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/w83627hf.c | 3 +++
 1 file changed, 3 insertions(+)
drivers/hwmon/w83627hf.c +3 -0
index c1726be..2f55973 100644
@@ -820,6 +820,9 @@ store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf
 	err = kstrtoul(buf, 10, &val);
 	if (err)
 		return err;
+
+	if (val > 255)
+		return -EINVAL;
 	data->vrm = val;
 
 	return count;
Signature · 9 lines
1.9.1




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