diff options
Diffstat (limited to 'drivers/usb/core/notify.c')
| -rw-r--r-- | drivers/usb/core/notify.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/usb/core/notify.c b/drivers/usb/core/notify.c index fe0ed54fa0ae..6b36897ca151 100644 --- a/drivers/usb/core/notify.c +++ b/drivers/usb/core/notify.c @@ -9,7 +9,6 @@ */ -#include <linux/config.h> #include <linux/kernel.h> #include <linux/notifier.h> #include <linux/usb.h> @@ -51,8 +50,11 @@ void usb_notify_add_device(struct usb_device *udev) void usb_notify_remove_device(struct usb_device *udev) { + /* Protect against simultaneous usbfs open */ + mutex_lock(&usbfs_mutex); blocking_notifier_call_chain(&usb_notifier_list, USB_DEVICE_REMOVE, udev); + mutex_unlock(&usbfs_mutex); } void usb_notify_add_bus(struct usb_bus *ubus) |
