r6040: define and use MTPR transmit enable bit

Define MTPR bit 0 of the register and use it where it is appropriate.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/rdc/r6040.c b/drivers/net/ethernet/rdc/r6040.c
index 1a365ae..afa4186 100644 (file)
--- a/drivers/net/ethernet/rdc/r6040.c
+++ b/drivers/net/ethernet/rdc/r6040.c
@@ -74,6 +74,7 @@
 #define MT_ICR         0x0C    /* TX interrupt control */
 #define MR_ICR         0x10    /* RX interrupt control */
 #define MTPR           0x14    /* TX poll command register */
+#define  TM2TX         0x0001  /* Trigger MAC to transmit */
 #define MR_BSR         0x18    /* RX buffer size */
 #define MR_DCR         0x1A    /* RX descriptor control */
 #define MLSR           0x1C    /* Last status */
@@ -420,7 +421,7 @@ static void r6040_init_mac_regs(struct net_device *dev)
        /* Let TX poll the descriptors
         * we may got called by r6040_tx_timeout which has left
         * some unsent tx buffers */
-       iowrite16(0x01, ioaddr + MTPR);
+       iowrite16(TM2TX, ioaddr + MTPR);
 }
 
 static void r6040_tx_timeout(struct net_device *dev)
@@ -844,7 +845,7 @@ static netdev_tx_t r6040_start_xmit(struct sk_buff *skb,
        skb_tx_timestamp(skb);
 
        /* Trigger the MAC to check the TX descriptor */
-       iowrite16(0x01, ioaddr + MTPR);
+       iowrite16(TM2TX, ioaddr + MTPR);
        lp->tx_insert_ptr = descptr->vndescp;
 
        /* If no tx resource, stop */