add might sleep patch for usb

1 files changed, 20 insertions, 0 deletions

diff --git a/usb/add-might_sleep-to-usb_unlink_urb.patch b/usb/add-might_sleep-to-usb_unlink_urb.patch
new file mode 100644
index 0000000000000..5d9c0a7f4e177
--- /dev/null
+++ b/usb/add-might_sleep-to-usb_unlink_urb.patch
@@ -0,0 +1,20 @@
+From: Greg Kroah-Hartman <gregkh@suse.de>
+Subject: USB: add might_sleep() to usb_unlink_urb() to warn developers
+
+
+Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
+
+---
+ drivers/usb/core/urb.c |    1 +
+ 1 file changed, 1 insertion(+)
+
+--- gregkh-2.6.orig/drivers/usb/core/urb.c
++++ gregkh-2.6/drivers/usb/core/urb.c
+@@ -468,6 +468,7 @@ int usb_unlink_urb(struct urb *urb)
+  */
+ void usb_kill_urb(struct urb *urb)
+ {
++	might_sleep();
+ 	if (!(urb && urb->dev && urb->dev->bus && urb->dev->bus->op))
+ 		return;
+ 	spin_lock_irq(&urb->lock);