diff options
| author | Tobias Klauser <tklauser@distanz.ch> | 2011-07-07 09:28:21 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-07-08 14:55:09 -0700 |
| commit | 8dec92b24064f1ffbb6537ba97729b633b400c28 (patch) | |
| tree | fc1c0e88de41ef6fd29df8e068431eb67a080768 /drivers/usb/mon | |
| parent | 004c19682884d4f40000ce1ded53f4a1d0b18206 (diff) | |
USB: mon: Allow to use usbmon without debugfs
Do not bail out with an error in mon_text_init() if debugfs is not
available, instead just return 0 and let mon_init() go ahead with
loading the binary API. Return -ENOMEM in case debugfs_create_dir()
fails for other reasons. Later, it is enough to check for mon_dir
not set.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/mon')
| -rw-r--r-- | drivers/usb/mon/mon_text.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/usb/mon/mon_text.c b/drivers/usb/mon/mon_text.c index c302e1983c7..1c3afcc11bd 100644 --- a/drivers/usb/mon/mon_text.c +++ b/drivers/usb/mon/mon_text.c @@ -670,6 +670,9 @@ int mon_text_add(struct mon_bus *mbus, const struct usb_bus *ubus) int busnum = ubus? ubus->busnum: 0; int rc; + if (mon_dir == NULL) + return 0; + if (ubus != NULL) { rc = snprintf(name, NAMESZ, "%dt", busnum); if (rc <= 0 || rc >= NAMESZ) @@ -740,12 +743,12 @@ int __init mon_text_init(void) mondir = debugfs_create_dir("usbmon", usb_debug_root); if (IS_ERR(mondir)) { - printk(KERN_NOTICE TAG ": debugfs is not available\n"); - return -ENODEV; + /* debugfs not available, but we can use usbmon without it */ + return 0; } if (mondir == NULL) { printk(KERN_NOTICE TAG ": unable to create usbmon directory\n"); - return -ENODEV; + return -ENOMEM; } mon_dir = mondir; return 0; |