From b9e349f710376ef55f200e9fa07e88b4fe2cdf98 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Mon, 28 Aug 2006 14:26:22 +0200 Subject: [PATCH] it87: Prevent overflow on fan clock divider write it87: Prevent overflow on fan clock divider write The highest possible clock divider for fan1 and fan2 is 128. Signed-off-by: Jean Delvare Signed-off-by: Greg Kroah-Hartman --- drivers/hwmon/it87.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c index 0317e441ca..fc75fcb6bf 100644 --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -198,7 +198,7 @@ static inline u16 FAN16_TO_REG(long rpm) static int DIV_TO_REG(int val) { int answer = 0; - while ((val >>= 1) != 0) + while (answer < 7 && (val >>= 1)) answer++; return answer; } @@ -563,7 +563,7 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, struct i2c_client *client = to_i2c_client(dev); struct it87_data *data = i2c_get_clientdata(client); - int val = simple_strtol(buf, NULL, 10); + unsigned long val = simple_strtoul(buf, NULL, 10); int i, min[3]; u8 old; -- 2.39.5