1 files changed, 13 insertions, 3 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index e393995d283a..b0813c3286b1 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -319,21 +319,29 @@ struct napi_struct {
 enum
 {
         NAPI_STATE_SCHED,       /* Poll is scheduled */
+        NAPI_STATE_DISABLE,     /* Disable pending */
 };
 
 extern void FASTCALL(__napi_schedule(struct napi_struct *n));
 
+static inline int napi_disable_pending(struct napi_struct *n)
+{
+        return test_bit(NAPI_STATE_DISABLE, &n->state);
+}
+
 /**
  *      napi_schedule_prep - check if napi can be scheduled
  *      @n: napi context
  *
  * Test if NAPI routine is already running, and if not mark
  * it as running.  This is used as a condition variable
- * insure only one NAPI poll instance runs
+ * insure only one NAPI poll instance runs.  We also make
+ * sure there is no pending NAPI disable.
  */
 static inline int napi_schedule_prep(struct napi_struct *n)
 {
-        return !test_and_set_bit(NAPI_STATE_SCHED, &n->state);
+        return !napi_disable_pending(n) &&
+                !test_and_set_bit(NAPI_STATE_SCHED, &n->state);
 }
 
 /**
@@ -389,8 +397,10 @@ static inline void napi_complete(struct napi_struct *n)
  */
 static inline void napi_disable(struct napi_struct *n)
 {
+        set_bit(NAPI_STATE_DISABLE, &n->state);
         while (test_and_set_bit(NAPI_STATE_SCHED, &n->state))
                 msleep(1);
+        clear_bit(NAPI_STATE_DISABLE, &n->state);
 }
 
 /**
@@ -1268,7 +1278,7 @@ static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits)
 static inline int netif_rx_schedule_prep(struct net_device *dev,
                                          struct napi_struct *napi)
 {
-        return netif_running(dev) && napi_schedule_prep(napi);
+        return napi_schedule_prep(napi);
 }
 
 /* Add interface to tail of rx poll list. This assumes that _prep has