mv643xx_eth: Place explicit port number in mv643xx_eth_platform_data

We were using the platform_device.id field to identify which ethernet
port is used for mv643xx_eth device.  This is not generally correct.
It will be incorrect, for example, if a hardware platform uses a single
port but not the first port.  Here, we add an explicit port_number field
to struct mv643xx_eth_platform_data.

This makes the mv643xx_eth_platform_data structure required, but that
isn't an issue since all users currently provide it already.

Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

7 files changed, 59 insertions, 29 deletions

diff --git a/arch/mips/momentum/jaguar_atx/platform.c b/arch/mips/momentum/jaguar_atx/platform.c
index 771e55f3987..561844878a9 100644
--- a/arch/mips/momentum/jaguar_atx/platform.c
+++ b/arch/mips/momentum/jaguar_atx/platform.c
@@ -48,6 +48,8 @@ static struct resource mv64x60_eth0_resources[] = {
 };
 
 static struct mv643xx_eth_platform_data eth0_pd = {
+        .port_number    = 0,
+
         .tx_sram_addr   = MV_SRAM_BASE_ETH0,
         .tx_sram_size   = MV_SRAM_TXRING_SIZE,
         .tx_queue_size  = MV_SRAM_TXRING_SIZE / 16,
@@ -77,6 +79,8 @@ static struct resource mv64x60_eth1_resources[] = {
 };
 
 static struct mv643xx_eth_platform_data eth1_pd = {
+        .port_number    = 1,
+
         .tx_sram_addr   = MV_SRAM_BASE_ETH1,
         .tx_sram_size   = MV_SRAM_TXRING_SIZE,
         .tx_queue_size  = MV_SRAM_TXRING_SIZE / 16,
@@ -105,7 +109,9 @@ static struct resource mv64x60_eth2_resources[] = {
         },
 };
 
-static struct mv643xx_eth_platform_data eth2_pd;
+static struct mv643xx_eth_platform_data eth2_pd = {
+        .port_number    = 2,
+};
 
 static struct platform_device eth2_device = {
         .name           = MV643XX_ETH_NAME,
diff --git a/arch/mips/momentum/ocelot_3/platform.c b/arch/mips/momentum/ocelot_3/platform.c
index b80733f0c66..44e4c3fc740 100644
--- a/arch/mips/momentum/ocelot_3/platform.c
+++ b/arch/mips/momentum/ocelot_3/platform.c
@@ -48,6 +48,8 @@ static struct resource mv64x60_eth0_resources[] = {
 };
 
 static struct mv643xx_eth_platform_data eth0_pd = {
+        .port_number    = 0,
+
         .tx_sram_addr   = MV_SRAM_BASE_ETH0,
         .tx_sram_size   = MV_SRAM_TXRING_SIZE,
         .tx_queue_size  = MV_SRAM_TXRING_SIZE / 16,
@@ -77,6 +79,8 @@ static struct resource mv64x60_eth1_resources[] = {
 };
 
 static struct mv643xx_eth_platform_data eth1_pd = {
+        .port_number    = 1,
+
         .tx_sram_addr   = MV_SRAM_BASE_ETH1,
         .tx_sram_size   = MV_SRAM_TXRING_SIZE,
         .tx_queue_size  = MV_SRAM_TXRING_SIZE / 16,
@@ -105,7 +109,9 @@ static struct resource mv64x60_eth2_resources[] = {
         },
 };
 
-static struct mv643xx_eth_platform_data eth2_pd;
+static struct mv643xx_eth_platform_data eth2_pd = {
+        .port_number    = 2,
+};
 
 static struct platform_device eth2_device = {
         .name           = MV643XX_ETH_NAME,
diff --git a/arch/mips/momentum/ocelot_c/platform.c b/arch/mips/momentum/ocelot_c/platform.c
index f7cd303f3eb..7780aa0c655 100644
--- a/arch/mips/momentum/ocelot_c/platform.c
+++ b/arch/mips/momentum/ocelot_c/platform.c
@@ -47,6 +47,8 @@ static struct resource mv64x60_eth0_resources[] = {
 };
 
 static struct mv643xx_eth_platform_data eth0_pd = {
+        .port_number    = 0,
+
         .tx_sram_addr   = MV_SRAM_BASE_ETH0,
         .tx_sram_size   = MV_SRAM_TXRING_SIZE,
         .tx_queue_size  = MV_SRAM_TXRING_SIZE / 16,
@@ -76,6 +78,8 @@ static struct resource mv64x60_eth1_resources[] = {
 };
 
 static struct mv643xx_eth_platform_data eth1_pd = {
+        .port_number    = 1,
+
         .tx_sram_addr   = MV_SRAM_BASE_ETH1,
         .tx_sram_size   = MV_SRAM_TXRING_SIZE,
         .tx_queue_size  = MV_SRAM_TXRING_SIZE / 16,
diff --git a/arch/powerpc/platforms/chrp/pegasos_eth.c b/arch/powerpc/platforms/chrp/pegasos_eth.c
index 6ad4b1a72c9..71045677559 100644
--- a/arch/powerpc/platforms/chrp/pegasos_eth.c
+++ b/arch/powerpc/platforms/chrp/pegasos_eth.c
@@ -58,6 +58,7 @@ static struct resource mv643xx_eth0_resources[] = {
 
 
 static struct mv643xx_eth_platform_data eth0_pd = {
+        .port_number    = 0,
         .tx_sram_addr = PEGASOS2_SRAM_BASE_ETH0,
         .tx_sram_size = PEGASOS2_SRAM_TXRING_SIZE,
         .tx_queue_size = PEGASOS2_SRAM_TXRING_SIZE/16,
@@ -87,6 +88,7 @@ static struct resource mv643xx_eth1_resources[] = {
 };
 
 static struct mv643xx_eth_platform_data eth1_pd = {
+        .port_number    = 1,
         .tx_sram_addr = PEGASOS2_SRAM_BASE_ETH1,
         .tx_sram_size = PEGASOS2_SRAM_TXRING_SIZE,
         .tx_queue_size = PEGASOS2_SRAM_TXRING_SIZE/16,
diff --git a/arch/ppc/syslib/mv64x60.c b/arch/ppc/syslib/mv64x60.c
index 3b039c30a43..a6f8b686ea8 100644
--- a/arch/ppc/syslib/mv64x60.c
+++ b/arch/ppc/syslib/mv64x60.c
@@ -339,7 +339,9 @@ static struct resource mv64x60_eth0_resources[] = {
         },
 };
 
-static struct mv643xx_eth_platform_data eth0_pd;
+static struct mv643xx_eth_platform_data eth0_pd = {
+        .port_number    = 0,
+};
 
 static struct platform_device eth0_device = {
         .name           = MV643XX_ETH_NAME,
@@ -362,7 +364,9 @@ static struct resource mv64x60_eth1_resources[] = {
         },
 };
 
-static struct mv643xx_eth_platform_data eth1_pd;
+static struct mv643xx_eth_platform_data eth1_pd = {
+        .port_number    = 1,
+};
 
 static struct platform_device eth1_device = {
         .name           = MV643XX_ETH_NAME,
@@ -385,7 +389,9 @@ static struct resource mv64x60_eth2_resources[] = {
         },
 };
 
-static struct mv643xx_eth_platform_data eth2_pd;
+static struct mv643xx_eth_platform_data eth2_pd = {
+        .port_number    = 2,
+};
 
 static struct platform_device eth2_device = {
         .name           = MV643XX_ETH_NAME,
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c
index be2ddbb6ef5..9ba21e0f27c 100644
--- a/drivers/net/mv643xx_eth.c
+++ b/drivers/net/mv643xx_eth.c
@@ -1309,7 +1309,7 @@ static void mv643xx_init_ethtool_cmd(struct net_device *dev, int phy_address,
 static int mv643xx_eth_probe(struct platform_device *pdev)
 {
         struct mv643xx_eth_platform_data *pd;
-        int port_num = pdev->id;
+        int port_num;
         struct mv643xx_private *mp;
         struct net_device *dev;
         u8 *p;
@@ -1319,6 +1319,12 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
         int duplex = DUPLEX_HALF;
         int speed = 0;                  /* default to auto-negotiation */
 
+        pd = pdev->dev.platform_data;
+        if (pd == NULL) {
+                printk(KERN_ERR "No mv643xx_eth_platform_data\n");
+                return -ENODEV;
+        }
+
         dev = alloc_etherdev(sizeof(struct mv643xx_private));
         if (!dev)
                 return -ENOMEM;
@@ -1331,8 +1337,6 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
         BUG_ON(!res);
         dev->irq = res->start;
 
-        mp->port_num = port_num;
-
         dev->open = mv643xx_eth_open;
         dev->stop = mv643xx_eth_stop;
         dev->hard_start_xmit = mv643xx_eth_start_xmit;
@@ -1373,39 +1377,40 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
 
         spin_lock_init(&mp->lock);
 
+        port_num = pd->port_number;
+
         /* set default config values */
         eth_port_uc_addr_get(dev, dev->dev_addr);
         mp->rx_ring_size = MV643XX_ETH_PORT_DEFAULT_RECEIVE_QUEUE_SIZE;
         mp->tx_ring_size = MV643XX_ETH_PORT_DEFAULT_TRANSMIT_QUEUE_SIZE;
 
-        pd = pdev->dev.platform_data;
-        if (pd) {
-                if (is_valid_ether_addr(pd->mac_addr))
-                        memcpy(dev->dev_addr, pd->mac_addr, 6);
+        if (is_valid_ether_addr(pd->mac_addr))
+                memcpy(dev->dev_addr, pd->mac_addr, 6);
 
-                if (pd->phy_addr || pd->force_phy_addr)
-                        ethernet_phy_set(port_num, pd->phy_addr);
+        if (pd->phy_addr || pd->force_phy_addr)
+                ethernet_phy_set(port_num, pd->phy_addr);
 
-                if (pd->rx_queue_size)
-                        mp->rx_ring_size = pd->rx_queue_size;
+        if (pd->rx_queue_size)
+                mp->rx_ring_size = pd->rx_queue_size;
 
-                if (pd->tx_queue_size)
-                        mp->tx_ring_size = pd->tx_queue_size;
+        if (pd->tx_queue_size)
+                mp->tx_ring_size = pd->tx_queue_size;
 
-                if (pd->tx_sram_size) {
-                        mp->tx_sram_size = pd->tx_sram_size;
-                        mp->tx_sram_addr = pd->tx_sram_addr;
-                }
-
-                if (pd->rx_sram_size) {
-                        mp->rx_sram_size = pd->rx_sram_size;
-                        mp->rx_sram_addr = pd->rx_sram_addr;
-                }
+        if (pd->tx_sram_size) {
+                mp->tx_sram_size = pd->tx_sram_size;
+                mp->tx_sram_addr = pd->tx_sram_addr;
+        }
 
-                duplex = pd->duplex;
-                speed = pd->speed;
+        if (pd->rx_sram_size) {
+                mp->rx_sram_size = pd->rx_sram_size;
+                mp->rx_sram_addr = pd->rx_sram_addr;
         }
 
+        duplex = pd->duplex;
+        speed = pd->speed;
+
+        mp->port_num = port_num;
+
         /* Hook up MII support for ethtool */
         mp->mii.dev = dev;
         mp->mii.mdio_read = mv643xx_mdio_read;
diff --git a/include/linux/mv643xx.h b/include/linux/mv643xx.h
index e7d4da1cc9f..c6d4ab86b83 100644
--- a/include/linux/mv643xx.h
+++ b/include/linux/mv643xx.h
@@ -1288,6 +1288,7 @@ struct mv64xxx_i2c_pdata {
 #define MV643XX_ETH_NAME        "mv643xx_eth"
 
 struct mv643xx_eth_platform_data {
+        int             port_number;
         u16             force_phy_addr; /* force override if phy_addr == 0 */
         u16             phy_addr;