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hwmon: (nct7802) Fix integer overflow seen when writing voltage limits 

Writing a large value into a voltage limit attribute can result
in an overflow due to an auto-conversion from unsigned long to
unsigned int.

Cc: Constantine Shulyupin <const@MakeLinux.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Cc: stable@vger.kernel.org # v4.1+
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2015-07-04 13:23:42 -07:00
parent 0d6aaffc3a
commit 9200bc4c28
1 changed files with 1 additions and 1 deletions
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2
drivers/hwmon/nct7802.c
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@ -195,7 +195,7 @@ static int nct7802_read_voltage(struct nct7802_data *data, int nr, int index)
}
static int nct7802_write_voltage(struct nct7802_data *data, int nr, int index,
unsigned int voltage)
unsigned long voltage)
{
int shift = 8 - REG_VOLTAGE_LIMIT_MSB_SHIFT[index - 1][nr];
int err;