From 54a5c4cd2e4ec0b27c2c3731727f52591456086c Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 20 Jun 2005 21:15:16 -0700 Subject: [PATCH] [PATCH] USB: convert usbfs/inode.c to use usb notifiers Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd.c | 2 -- drivers/usb/core/hcd.h | 10 --------- drivers/usb/core/hub.c | 3 --- drivers/usb/core/inode.c | 44 ++++++++++++++++++++++++++++------------ 4 files changed, 31 insertions(+), 28 deletions(-) diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index b700b6cdb68..16790ad0e2e 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -793,7 +793,6 @@ static int usb_register_bus(struct usb_bus *bus) up (&usb_bus_list_lock); usb_notify_add_bus(bus); - usbfs_add_bus (bus); usbmon_notify_bus_add (bus); dev_info (bus->controller, "new USB bus registered, assigned bus number %d\n", bus->busnum); @@ -823,7 +822,6 @@ static void usb_deregister_bus (struct usb_bus *bus) usb_notify_remove_bus(bus); usbmon_notify_bus_remove (bus); - usbfs_remove_bus (bus); clear_bit (bus->busnum, busmap.busmap); diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h index d8f0d29a45b..cc33886260c 100644 --- a/drivers/usb/core/hcd.h +++ b/drivers/usb/core/hcd.h @@ -400,23 +400,13 @@ static inline int hcd_bus_resume (struct usb_bus *bus) * these are expected to be called from the USB core/hub thread * with the kernel lock held */ -extern void usbfs_add_bus(struct usb_bus *bus); -extern void usbfs_remove_bus(struct usb_bus *bus); -extern void usbfs_add_device(struct usb_device *dev); -extern void usbfs_remove_device(struct usb_device *dev); extern void usbfs_update_special (void); - extern int usbfs_init(void); extern void usbfs_cleanup(void); #else /* CONFIG_USB_DEVICEFS */ -static inline void usbfs_add_bus(struct usb_bus *bus) {} -static inline void usbfs_remove_bus(struct usb_bus *bus) {} -static inline void usbfs_add_device(struct usb_device *dev) {} -static inline void usbfs_remove_device(struct usb_device *dev) {} static inline void usbfs_update_special (void) {} - static inline int usbfs_init(void) { return 0; } static inline void usbfs_cleanup(void) { } diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index a9d16aff5de..6a2ebd89916 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1136,7 +1136,6 @@ void usb_disconnect(struct usb_device **pdev) */ dev_dbg (&udev->dev, "unregistering device\n"); release_address(udev); - usbfs_remove_device(udev); usb_remove_sysfs_dev_files(udev); /* Avoid races with recursively_mark_NOTATTACHED() */ @@ -1374,8 +1373,6 @@ int usb_new_device(struct usb_device *udev) /* USB device state == configured ... usable */ usb_notify_add_device(udev); - /* add a /proc/bus/usb entry */ - usbfs_add_device(udev); return 0; fail: diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c index d07bba01995..12f490fdee8 100644 --- a/drivers/usb/core/inode.c +++ b/drivers/usb/core/inode.c @@ -39,6 +39,7 @@ #include #include #include +#include #include #include "usb.h" #include "hcd.h" @@ -619,7 +620,7 @@ void usbfs_update_special (void) } } -void usbfs_add_bus(struct usb_bus *bus) +static void usbfs_add_bus(struct usb_bus *bus) { struct dentry *parent; char name[8]; @@ -642,12 +643,9 @@ void usbfs_add_bus(struct usb_bus *bus) err ("error creating usbfs bus entry"); return; } - - usbfs_update_special(); - usbfs_conn_disc_event(); } -void usbfs_remove_bus(struct usb_bus *bus) +static void usbfs_remove_bus(struct usb_bus *bus) { if (bus->usbfs_dentry) { fs_remove_file (bus->usbfs_dentry); @@ -659,12 +657,9 @@ void usbfs_remove_bus(struct usb_bus *bus) remove_special_files(); num_buses = 0; } - - usbfs_update_special(); - usbfs_conn_disc_event(); } -void usbfs_add_device(struct usb_device *dev) +static void usbfs_add_device(struct usb_device *dev) { char name[8]; int i; @@ -690,12 +685,9 @@ void usbfs_add_device(struct usb_device *dev) } if (dev->usbfs_dentry->d_inode) dev->usbfs_dentry->d_inode->i_size = i_size; - - usbfs_update_special(); - usbfs_conn_disc_event(); } -void usbfs_remove_device(struct usb_device *dev) +static void usbfs_remove_device(struct usb_device *dev) { struct dev_state *ds; struct siginfo sinfo; @@ -716,10 +708,33 @@ void usbfs_remove_device(struct usb_device *dev) kill_proc_info_as_uid(ds->discsignr, &sinfo, ds->disc_pid, ds->disc_uid, ds->disc_euid); } } +} + +static int usbfs_notify(struct notifier_block *self, unsigned long action, void *dev) +{ + switch (action) { + case USB_DEVICE_ADD: + usbfs_add_device(dev); + break; + case USB_DEVICE_REMOVE: + usbfs_remove_device(dev); + break; + case USB_BUS_ADD: + usbfs_add_bus(dev); + break; + case USB_BUS_REMOVE: + usbfs_remove_bus(dev); + } + usbfs_update_special(); usbfs_conn_disc_event(); + return NOTIFY_OK; } +static struct notifier_block usbfs_nb = { + .notifier_call = usbfs_notify, +}; + /* --------------------------------------------------------------------- */ static struct proc_dir_entry *usbdir = NULL; @@ -732,6 +747,8 @@ int __init usbfs_init(void) if (retval) return retval; + usb_register_notify(&usbfs_nb); + /* create mount point for usbfs */ usbdir = proc_mkdir("usb", proc_bus); @@ -740,6 +757,7 @@ int __init usbfs_init(void) void usbfs_cleanup(void) { + usb_unregister_notify(&usbfs_nb); unregister_filesystem(&usb_fs_type); if (usbdir) remove_proc_entry("usb", proc_bus); -- 2.43.2