diff options
| author | Greg Kroah-Hartman <gregkh@suse.de> | 2009-04-24 14:56:26 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-06-15 21:44:42 -0700 |
| commit | 00048b8bde5a6cbd9c3a76f272cc9ddb55705e37 (patch) | |
| tree | fd8acec26630c895b8012e7ed0699274064b1212 | |
| parent | 84fe6e799deaf14e2c7a941e805cd93d83f90927 (diff) | |
USB: add usb debugfs directory
Add a common usb directory in debugfs that the usb subsystem can use.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/usb/core/usb.c | 22 | ||||
| -rw-r--r-- | include/linux/usb.h | 3 |
2 files changed, 25 insertions, 0 deletions
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 7eee400d3e3..5f6873f5f26 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); diff --git a/include/linux/usb.h b/include/linux/usb.h index 3aa2cd1f8d0..29060dad81e 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -1558,6 +1558,9 @@ extern void usb_unregister_notify(struct notifier_block *nb); #define err(format, arg...) printk(KERN_ERR KBUILD_MODNAME ": " \ format "\n" , ## arg) +/* debugfs stuff */ +extern struct dentry *usb_debug_root; + #endif /* __KERNEL__ */ #endif |