Merge 4.5-rc4 into usb-next

We want the USB fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 5 insertions, 6 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 5ac140dcb789..289c2314d766 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -512,7 +512,6 @@ static inline void napi_enable(struct napi_struct *n)
         clear_bit(NAPI_STATE_NPSVC, &n->state);
 }
 
-#ifdef CONFIG_SMP
 /**
  *      napi_synchronize - wait until NAPI is not running
  *      @n: napi context
@@ -523,12 +522,12 @@ static inline void napi_enable(struct napi_struct *n)
  */
 static inline void napi_synchronize(const struct napi_struct *n)
 {
-        while (test_bit(NAPI_STATE_SCHED, &n->state))
-                msleep(1);
+        if (IS_ENABLED(CONFIG_SMP))
+                while (test_bit(NAPI_STATE_SCHED, &n->state))
+                        msleep(1);
+        else
+                barrier();
 }
-#else
-# define napi_synchronize(n)    barrier()
-#endif
 
 enum netdev_queue_state_t {
         __QUEUE_STATE_DRV_XOFF,