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| 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 /drivers/usb/core/usb.c | |
| parent | 84fe6e799deaf14e2c7a941e805cd93d83f90927 (diff) | |
| download | kernel-common-00048b8bde5a6cbd9c3a76f272cc9ddb55705e37.tar.gz kernel-common-00048b8bde5a6cbd9c3a76f272cc9ddb55705e37.tar.bz2 kernel-common-00048b8bde5a6cbd9c3a76f272cc9ddb55705e37.zip | |
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>
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); |