diff options
Diffstat (limited to 'drivers/atm/adummy.c')
| -rw-r--r-- | drivers/atm/adummy.c | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/drivers/atm/adummy.c b/drivers/atm/adummy.c index 5effec6f545..f9b983ae687 100644 --- a/drivers/atm/adummy.c +++ b/drivers/atm/adummy.c @@ -13,6 +13,7 @@ #include <linux/mm.h> #include <linux/timer.h> #include <linux/interrupt.h> +#include <linux/slab.h> #include <asm/io.h> #include <asm/byteorder.h> #include <asm/uaccess.h> @@ -39,6 +40,42 @@ struct adummy_dev { static LIST_HEAD(adummy_devs); +static ssize_t __set_signal(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct atm_dev *atm_dev = container_of(dev, struct atm_dev, class_dev); + int signal; + + if (sscanf(buf, "%d", &signal) == 1) { + + if (signal < ATM_PHY_SIG_LOST || signal > ATM_PHY_SIG_FOUND) + signal = ATM_PHY_SIG_UNKNOWN; + + atm_dev_signal_change(atm_dev, signal); + return 1; + } + return -EINVAL; +} + +static ssize_t __show_signal(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct atm_dev *atm_dev = container_of(dev, struct atm_dev, class_dev); + return sprintf(buf, "%d\n", atm_dev->signal); +} +static DEVICE_ATTR(signal, 0644, __show_signal, __set_signal); + +static struct attribute *adummy_attrs[] = { + &dev_attr_signal.attr, + NULL +}; + +static struct attribute_group adummy_group_attrs = { + .name = NULL, /* We want them in dev's root folder */ + .attrs = adummy_attrs +}; + static int __init adummy_start(struct atm_dev *dev) { @@ -117,7 +154,7 @@ static int __init adummy_init(void) err = -ENOMEM; goto out; } - atm_dev = atm_dev_register(DEV_LABEL, &adummy_ops, -1, NULL); + atm_dev = atm_dev_register(DEV_LABEL, NULL, &adummy_ops, -1, NULL); if (!atm_dev) { printk(KERN_ERR DEV_LABEL ": atm_dev_register() failed\n"); err = -ENODEV; @@ -127,6 +164,9 @@ static int __init adummy_init(void) adummy_dev->atm_dev = atm_dev; atm_dev->dev_data = adummy_dev; + if (sysfs_create_group(&atm_dev->class_dev.kobj, &adummy_group_attrs)) + dev_err(&atm_dev->class_dev, "Could not register attrs for adummy\n"); + if (adummy_start(atm_dev)) { printk(KERN_ERR DEV_LABEL ": adummy_start() failed\n"); err = -ENODEV; |