GRETH: fix opening/closing

When NAPI is disabled there is no point in having IRQs enabled, TX/RX
should be off before clearing the TX/RX descriptor rings.

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/net/greth.c b/drivers/net/greth.c
index 1c2dbdb43631..b307696e0f63 100644
--- a/drivers/net/greth.c
+++ b/drivers/net/greth.c
@@ -356,6 +356,8 @@ static int greth_open(struct net_device *dev)
                 dev_dbg(&dev->dev, " starting queue\n");
         netif_start_queue(dev);
 
+        GRETH_REGSAVE(greth->regs->status, 0xFF);
+
         napi_enable(&greth->napi);
 
         greth_enable_irqs(greth);
@@ -371,7 +373,9 @@ static int greth_close(struct net_device *dev)
 
         napi_disable(&greth->napi);
 
+        greth_disable_irqs(greth);
         greth_disable_tx(greth);
+        greth_disable_rx(greth);
 
         netif_stop_queue(dev);