[PULL,13/14] virtio_net: use RCU_READ_LOCK_GUARD

Commit Message

Michael S. Tsirkin Oct. 29, 2019, 11:01 p.m. UTC

From: "Dr. David Alan Gilbert" <[e-mail]>

Use RCU_READ_LOCK_GUARD rather than the manual rcu_read_(un)lock call.

Signed-off-by: Dr. David Alan Gilbert <[e-mail]>
Message-Id: <[e-mail]>
Reviewed-by: Michael S. Tsirkin <[e-mail]>
Signed-off-by: Michael S. Tsirkin <[e-mail]>
---
 hw/net/virtio-net.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

Patch

diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index 314f365e7c..97a5113f7e 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -1490,12 +1490,9 @@  static ssize_t virtio_net_receive_rcu(NetClientState *nc, const uint8_t *buf,
 static ssize_t virtio_net_do_receive(NetClientState *nc, const uint8_t *buf,
                                   size_t size)
 {
-    ssize_t r;
+    RCU_READ_LOCK_GUARD();
 
-    rcu_read_lock();
-    r = virtio_net_receive_rcu(nc, buf, size);
-    rcu_read_unlock();
-    return r;
+    return virtio_net_receive_rcu(nc, buf, size);
 }
 
 static void virtio_net_rsc_extract_unit4(VirtioNetRscChain *chain,