hv_netvsc: use napi_schedule_irqoff

Since the netvsc_channel_cb is already called in interrupt
context from vmbus, there is no need to do irqsave/restore.

Signed-off-by: Stephen Hemminger <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: shemminger

drivers/net/hyperv/netvsc.c

@@ -1233,7 +1233,7 @@ void netvsc_channel_cb(void *context)
 		/* disable interupts from host */
 		hv_begin_read(rbi);
 
-		__napi_schedule(&nvchan->napi);
+		__napi_schedule_irqoff(&nvchan->napi);
 	}
 }