diff options
Diffstat (limited to 'drivers/char/ds1620.c')
| -rw-r--r-- | drivers/char/ds1620.c | 34 |
1 files changed, 19 insertions, 15 deletions
diff --git a/drivers/char/ds1620.c b/drivers/char/ds1620.c index 24ffd8c..544b4ce 100644 --- a/drivers/char/ds1620.c +++ b/drivers/char/ds1620.c @@ -6,6 +6,7 @@ #include <linux/miscdevice.h> #include <linux/delay.h> #include <linux/proc_fs.h> +#include <linux/seq_file.h> #include <linux/capability.h> #include <linux/init.h> #include <linux/mutex.h> @@ -329,9 +330,7 @@ ds1620_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg) } #ifdef THERM_USE_PROC -static int -proc_therm_ds1620_read(char *buf, char **start, off_t offset, - int len, int *eof, void *unused) +static int ds1620_proc_therm_show(struct seq_file *m, void *v) { struct therm th; int temp; @@ -339,17 +338,25 @@ proc_therm_ds1620_read(char *buf, char **start, off_t offset, ds1620_read_state(&th); temp = cvt_9_to_int(ds1620_in(THERM_READ_TEMP, 9)); - len = sprintf(buf, "Thermostat: HI %i.%i, LOW %i.%i; " - "temperature: %i.%i C, fan %s\n", - th.hi >> 1, th.hi & 1 ? 5 : 0, - th.lo >> 1, th.lo & 1 ? 5 : 0, - temp >> 1, temp & 1 ? 5 : 0, - fan_state[netwinder_get_fan()]); + seq_printf(m, "Thermostat: HI %i.%i, LOW %i.%i; temperature: %i.%i C, fan %s\n", + th.hi >> 1, th.hi & 1 ? 5 : 0, + th.lo >> 1, th.lo & 1 ? 5 : 0, + temp >> 1, temp & 1 ? 5 : 0, + fan_state[netwinder_get_fan()]); + return 0; +} - return len; +static int ds1620_proc_therm_open(struct inode *inode, struct file *file) +{ + return single_open(file, ds1620_proc_therm_show, NULL); } -static struct proc_dir_entry *proc_therm_ds1620; +static const struct file_operations ds1620_proc_therm_fops = { + .open = ds1620_proc_therm_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; #endif static const struct file_operations ds1620_fops = { @@ -397,10 +404,7 @@ static int __init ds1620_init(void) return ret; #ifdef THERM_USE_PROC - proc_therm_ds1620 = create_proc_entry("therm", 0, NULL); - if (proc_therm_ds1620) - proc_therm_ds1620->read_proc = proc_therm_ds1620_read; - else + if (!proc_create("therm", 0, NULL, &ds1620_proc_therm_fops)) printk(KERN_ERR "therm: unable to register /proc/therm\n"); #endif |
