usbdev: BKL pushdown
Add explicit lock_kernel() calls to usbdev_open()
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index de17738..9218cca 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -565,6 +565,7 @@
struct dev_state *ps;
int ret;
+ lock_kernel();
/* Protect against simultaneous removal or release */
mutex_lock(&usbfs_mutex);
@@ -611,6 +612,7 @@
if (ret)
kfree(ps);
mutex_unlock(&usbfs_mutex);
+ unlock_kernel();
return ret;
}