diff options
Diffstat (limited to 'drivers/hwmon/dell-smm-hwmon.c')
-rw-r--r-- | drivers/hwmon/dell-smm-hwmon.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c index 9d3ef879dc51..a5bca3bbe95d 100644 --- a/drivers/hwmon/dell-smm-hwmon.c +++ b/drivers/hwmon/dell-smm-hwmon.c @@ -304,7 +304,7 @@ static int i8k_get_fan_nominal_speed(int fan, int speed) } /* - * Set the fan speed (off, low, high). Returns the new fan status. + * Set the fan speed (off, low, high, ...). */ static int i8k_set_fan(int fan, int speed) { @@ -316,7 +316,7 @@ static int i8k_set_fan(int fan, int speed) speed = (speed < 0) ? 0 : ((speed > i8k_fan_max) ? i8k_fan_max : speed); regs.ebx = (fan & 0xff) | (speed << 8); - return i8k_smm(®s) ? : i8k_get_fan_status(fan); + return i8k_smm(®s); } static int i8k_get_temp_type(int sensor) @@ -430,7 +430,7 @@ static int i8k_ioctl_unlocked(struct file *fp, unsigned int cmd, unsigned long arg) { int val = 0; - int speed; + int speed, err; unsigned char buff[16]; int __user *argp = (int __user *)arg; @@ -491,7 +491,11 @@ i8k_ioctl_unlocked(struct file *fp, unsigned int cmd, unsigned long arg) if (copy_from_user(&speed, argp + 1, sizeof(int))) return -EFAULT; - val = i8k_set_fan(val, speed); + err = i8k_set_fan(val, speed); + if (err < 0) + return err; + + val = i8k_get_fan_status(val); break; default: @@ -591,15 +595,18 @@ static const struct file_operations i8k_fops = { .unlocked_ioctl = i8k_ioctl, }; +static struct proc_dir_entry *entry; + static void __init i8k_init_procfs(void) { /* Register the proc entry */ - proc_create("i8k", 0, NULL, &i8k_fops); + entry = proc_create("i8k", 0, NULL, &i8k_fops); } static void __exit i8k_exit_procfs(void) { - remove_proc_entry("i8k", NULL); + if (entry) + remove_proc_entry("i8k", NULL); } #else |