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author | Greg Kroah-Hartman <gregkh@suse.de> | 2005-06-20 21:15:16 -0700 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2005-10-28 16:47:46 -0700 |
commit | a7b986b3e107727dd1c1af0ead0b5e52d7726db3 (patch) | |
tree | bc9b81342469fa5c4eddaf16b852e7f45b734b26 /drivers/usb/core/devio.c | |
parent | 3099e75a7ccc3c5b0a4cf988a76d9c4a7fa5e91a (diff) | |
download | kernel_samsung_crespo-a7b986b3e107727dd1c1af0ead0b5e52d7726db3.zip kernel_samsung_crespo-a7b986b3e107727dd1c1af0ead0b5e52d7726db3.tar.gz kernel_samsung_crespo-a7b986b3e107727dd1c1af0ead0b5e52d7726db3.tar.bz2 |
[PATCH] USB: convert usbfs/devio.c to use usb notifiers
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/devio.c')
-rw-r--r-- | drivers/usb/core/devio.c | 41 |
1 files changed, 34 insertions, 7 deletions
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index 9222b7a..2bd742b 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -46,6 +46,7 @@ #include <linux/usb.h> #include <linux/usbdevice_fs.h> #include <linux/cdev.h> +#include <linux/notifier.h> #include <asm/uaccess.h> #include <asm/byteorder.h> #include <linux/moduleparam.h> @@ -1550,7 +1551,7 @@ struct file_operations usbfs_device_file_operations = { .release = usbdev_release, }; -void usbdev_add(struct usb_device *dev) +static void usbdev_add(struct usb_device *dev) { int minor = ((dev->bus->busnum-1) * 128) + (dev->devnum-1); @@ -1561,11 +1562,29 @@ void usbdev_add(struct usb_device *dev) dev->class_dev->class_data = dev; } -void usbdev_remove(struct usb_device *dev) +static void usbdev_remove(struct usb_device *dev) { class_device_unregister(dev->class_dev); } +static int usbdev_notify(struct notifier_block *self, unsigned long action, + void *dev) +{ + switch (action) { + case USB_DEVICE_ADD: + usbdev_add(dev); + break; + case USB_DEVICE_REMOVE: + usbdev_remove(dev); + break; + } + return NOTIFY_OK; +} + +static struct notifier_block usbdev_nb = { + .notifier_call = usbdev_notify, +}; + static struct cdev usb_device_cdev = { .kobj = {.name = "usb_device", }, .owner = THIS_MODULE, @@ -1585,24 +1604,32 @@ int __init usbdev_init(void) retval = cdev_add(&usb_device_cdev, USB_DEVICE_DEV, USB_DEVICE_MAX); if (retval) { err("unable to get usb_device major %d", USB_DEVICE_MAJOR); - unregister_chrdev_region(USB_DEVICE_DEV, USB_DEVICE_MAX); - goto out; + goto error_cdev; } usb_device_class = class_create(THIS_MODULE, "usb_device"); if (IS_ERR(usb_device_class)) { err("unable to register usb_device class"); retval = PTR_ERR(usb_device_class); - usb_device_class = NULL; - cdev_del(&usb_device_cdev); - unregister_chrdev_region(USB_DEVICE_DEV, USB_DEVICE_MAX); + goto error_class; } + usb_register_notify(&usbdev_nb); + out: return retval; + +error_class: + usb_device_class = NULL; + cdev_del(&usb_device_cdev); + +error_cdev: + unregister_chrdev_region(USB_DEVICE_DEV, USB_DEVICE_MAX); + goto out; } void usbdev_cleanup(void) { + usb_unregister_notify(&usbdev_nb); class_destroy(usb_device_class); cdev_del(&usb_device_cdev); unregister_chrdev_region(USB_DEVICE_DEV, USB_DEVICE_MAX); |