[NET]: Avoid atomic xchg() for non-error case

It also looks like there were 2 places where the test on sk_err was
missing from the event wait logic (in sk_stream_wait_connect and
sk_stream_wait_memory), while the rest of the sock_error() users look
to be doing the right thing.  This version of the patch fixes those,
and cleans up a few places that were testing ->sk_err directly.

Signed-off-by: Benjamin LaHaise <benjamin.c.lahaise@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c
index 6f92f9c62990..f121f7de2032 100644
--- a/net/irda/af_irda.c
+++ b/net/irda/af_irda.c
@@ -1438,8 +1438,9 @@ static int irda_recvmsg_stream(struct kiocb *iocb, struct socket *sock,
                         /*
                          *      POSIX 1003.1g mandates this order.
                          */
-                        if (sk->sk_err)
-                                ret = sock_error(sk);
+                        ret = sock_error(sk);
+                        if (ret)
+                                break;
                         else if (sk->sk_shutdown & RCV_SHUTDOWN)
                                 ;
                         else if (noblock)