[PATCH 2/2] net: rtl8139: fix ifdown/ifup issues

[Denis Orlov <denorl2009@gmail.com>]

This moves PCI bus-mastering enable from 'init' to 'open', allowing to
bring an interface up after bringing it down. Also add corresponding
dma_free_coherent() calls into 'close', getting rid of memory leaks.

Signed-off-by: Denis Orlov <denorl2009@gmail.com>
---
 drivers/net/rtl8139.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/rtl8139.c b/drivers/net/rtl8139.c
index 617a60bfcb..1cd2ae14de 100644
--- a/drivers/net/rtl8139.c
+++ b/drivers/net/rtl8139.c
@@ -373,7 +373,6 @@ static int rtl8139_init_dev(struct eth_device *edev)
 	struct rtl8139_priv *priv = edev->priv;
 
 	rtl8139_chip_reset(priv);
-	pci_set_master(priv->pci_dev);
 
 	return 0;
 }
@@ -390,6 +389,8 @@ static int rtl8139_eth_open(struct eth_device *edev)
 	rtl8139_init_ring(priv);
 	rtl8139_hw_start(priv);
 
+	pci_set_master(priv->pci_dev);
+
 	ret = phy_device_connect(edev, &priv->miibus, 0, NULL, 0,
 				 PHY_INTERFACE_MODE_NA);
 
@@ -408,6 +409,11 @@ static void rtl8139_eth_halt(struct eth_device *edev)
 
 	pci_clear_master(priv->pci_dev);
 
+	dma_free_coherent((void *)priv->tx_bufs, priv->tx_bufs_dma,
+			  TX_BUF_TOT_LEN);
+	dma_free_coherent((void *)priv->rx_ring, priv->rx_ring_dma,
+			  TX_BUF_TOT_LEN);
+
 	/* Green! Put the chip in low-power mode. */
 	RTL_W8(priv, Cfg9346, Cfg9346_Unlock);
 }
-- 
2.30.2