netpoll: add RCU annotation to npinfo field
dev->npinfo is protected by RCU.
This fixes the following sparse warnings:
net/core/netpoll.c:177:48: error: incompatible types in comparison expression (different address spaces)
net/core/netpoll.c:200:35: error: incompatible types in comparison expression (different address spaces)
net/core/netpoll.c:221:35: error: incompatible types in comparison expression (different address spaces)
net/core/netpoll.c:327:18: error: incompatible types in comparison expression (different address spaces)
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 549f5ad..85b0949 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1272,7 +1272,7 @@
void (*destructor)(struct net_device *dev);
#ifdef CONFIG_NETPOLL
- struct netpoll_info *npinfo;
+ struct netpoll_info __rcu *npinfo;
#endif
#ifdef CONFIG_NET_NS