s390: add barriers to qeth driver
Add barrier to loop where atomic variable is evaluated.
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/s390/net/qeth_main.c b/drivers/s390/net/qeth_main.c
index 8dca935..57f6943 100644
--- a/drivers/s390/net/qeth_main.c
+++ b/drivers/s390/net/qeth_main.c
@@ -1935,6 +1935,7 @@
atomic_inc(&reply->received);
wake_up(&reply->wait_q);
}
+ cpu_relax();
};
rc = reply->rc;
qeth_put_reply(reply);