diff options
Diffstat (limited to 'drivers/usb/core/usb.c')
| -rw-r--r-- | drivers/usb/core/usb.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 7eee400d3e32..5f6873f5f268 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -34,6 +34,7 @@ #include <linux/usb.h> #include <linux/mutex.h> #include <linux/workqueue.h> +#include <linux/debugfs.h> #include <asm/io.h> #include <linux/scatterlist.h> @@ -1001,6 +1002,22 @@ static struct notifier_block usb_bus_nb = { .notifier_call = usb_bus_notify, }; +struct dentry *usb_debug_root; +EXPORT_SYMBOL_GPL(usb_debug_root); + +static int usb_debugfs_init(void) +{ + usb_debug_root = debugfs_create_dir("usb", NULL); + if (!usb_debug_root) + return -ENOENT; + return 0; +} + +static void usb_debugfs_cleanup(void) +{ + debugfs_remove(usb_debug_root); +} + /* * Init */ @@ -1012,6 +1029,10 @@ static int __init usb_init(void) return 0; } + retval = usb_debugfs_init(); + if (retval) + goto out; + retval = ksuspend_usb_init(); if (retval) goto out; @@ -1083,6 +1104,7 @@ static void __exit usb_exit(void) bus_unregister_notifier(&usb_bus_type, &usb_bus_nb); bus_unregister(&usb_bus_type); ksuspend_usb_cleanup(); + usb_debugfs_cleanup(); } subsys_initcall(usb_init); |