arm: dts: rk3288-evb-rk818: set tsadc default pinctrl to gpio

[firefly-linux-kernel-4.4.55.git] / drivers / net / macvtap.c

diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
index 54036ae0a388c9a34cbb92fc832980fc1e584dc2..79de9608ac485b5627f528aa5e235f2a4d97dae2 100644 (file)
--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -498,7 +498,7 @@ static void macvtap_sock_write_space(struct sock *sk)
        wait_queue_head_t *wqueue;
 
        if (!sock_writeable(sk) ||
-           !test_and_clear_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags))
+           !test_and_clear_bit(SOCKWQ_ASYNC_NOSPACE, &sk->sk_socket->flags))
                return;
 
        wqueue = sk_sleep(sk);
@@ -585,7 +585,7 @@ static unsigned int macvtap_poll(struct file *file, poll_table * wait)
                mask |= POLLIN | POLLRDNORM;
 
        if (sock_writeable(&q->sk) ||
-           (!test_and_set_bit(SOCK_ASYNC_NOSPACE, &q->sock.flags) &&
+           (!test_and_set_bit(SOCKWQ_ASYNC_NOSPACE, &q->sock.flags) &&
             sock_writeable(&q->sk)))
                mask |= POLLOUT | POLLWRNORM;
 
@@ -725,7 +725,7 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m,
        ssize_t n;
 
        if (q->flags & IFF_VNET_HDR) {
-               vnet_hdr_len = q->vnet_hdr_sz;
+               vnet_hdr_len = READ_ONCE(q->vnet_hdr_sz);
 
                err = -EINVAL;
                if (len < vnet_hdr_len)
@@ -760,6 +760,8 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m,
                        macvtap16_to_cpu(q, vnet_hdr.hdr_len) : GOODCOPY_LEN;
                if (copylen > good_linear)
                        copylen = good_linear;
+               else if (copylen < ETH_HLEN)
+                       copylen = ETH_HLEN;
                linear = copylen;
                i = *from;
                iov_iter_advance(&i, copylen);
@@ -769,10 +771,11 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m,
 
        if (!zerocopy) {
                copylen = len;
-               if (macvtap16_to_cpu(q, vnet_hdr.hdr_len) > good_linear)
+               linear = macvtap16_to_cpu(q, vnet_hdr.hdr_len);
+               if (linear > good_linear)
                        linear = good_linear;
-               else
-                       linear = macvtap16_to_cpu(q, vnet_hdr.hdr_len);
+               else if (linear < ETH_HLEN)
+                       linear = ETH_HLEN;
        }
 
        skb = macvtap_alloc_skb(&q->sk, MACVTAP_RESERVE, copylen,
@@ -862,7 +865,7 @@ static ssize_t macvtap_put_user(struct macvtap_queue *q,
 
        if (q->flags & IFF_VNET_HDR) {
                struct virtio_net_hdr vnet_hdr;
-               vnet_hdr_len = q->vnet_hdr_sz;
+               vnet_hdr_len = READ_ONCE(q->vnet_hdr_sz);
                if (iov_iter_count(iter) < vnet_hdr_len)
                        return -EINVAL;