[PATCH 6/9] i8k: Make fan module parameters an unsigned

Pali Rohár
2015-01-12T13:33:03Z

Setting negative fan multiplier or maximal fan speed does make any sense and
can cause problems. So ensure that negative values will not be accepted.

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
---
drivers/char/i8k.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
index 8ec4c37..d6e8a26 100644
--- a/drivers/char/i8k.c
+++ b/drivers/char/i8k.c
@@ -64,9 +64,9 @@ static DEFINE_MUTEX(i8k_mutex);
static char bios_version[4];
static struct device *i8k_hwmon_dev;
static u32 i8k_hwmon_flags;
-static int i8k_fan_mult;
-static int i8k_pwm_mult;
-static int i8k_fan_max = I8K_FAN_HIGH;
+static uint i8k_fan_mult;
+static uint i8k_pwm_mult;
+static uint i8k_fan_max = I8K_FAN_HIGH;

#define I8K_HWMON_HAVE_TEMP1 (1 << 0)
#define I8K_HWMON_HAVE_TEMP2 (1 << 1)
@@ -95,12 +95,12 @@ static bool power_status;
module_param(power_status, bool, 0600);
MODULE_PARM_DESC(power_status, "Report power status in /proc/i8k");

-static int fan_mult = I8K_FAN_MULT;
-module_param(fan_mult, int, 0);
+static uint fan_mult = I8K_FAN_MULT;
+module_param(fan_mult, uint, 0);
MODULE_PARM_DESC(fan_mult, "Factor to multiply fan speed with");

-static int fan_max = I8K_FAN_HIGH;
-module_param(fan_max, int, 0);
+static uint fan_max = I8K_FAN_HIGH;
+module_param(fan_max, uint, 0);
MODULE_PARM_DESC(fan_max, "Maximum configurable fan speed");

static int i8k_open_fs(struct inode *inode, struct file *file);
@@ -696,8 +696,8 @@ static int __init i8k_init_hwmon(void)
}

struct i8k_config_data {
- int fan_mult;
- int fan_max;
+ uint fan_mult;
+ uint fan_max;
};

enum i8k_configs {
--
1.7.9.5