From eac92acae29cfab34785d61cbb3218e88e487b77 Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Mon, 8 Jul 2013 00:35:12 +0200 Subject: [PATCH 27/29] net: mv643xx_eth: do not use port number as platform device id The port number is only local to the ethernet block, not global, so there can be two ethernet blocks both using the same port, like kirkwood with both using port 0. Fix this by using the array index offset for the allocated platform devices as the id. Signed-off-by: Jonas Gorski --- drivers/net/ethernet/marvell/mv643xx_eth.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c index 004a250..e57d292 100644 --- a/drivers/net/ethernet/marvell/mv643xx_eth.c +++ b/drivers/net/ethernet/marvell/mv643xx_eth.c @@ -2483,6 +2483,7 @@ static int mv643xx_eth_shared_of_add_port(struct platform_device *pdev, struct resource res; const char *mac_addr; int ret; + int dev_num = 0; memset(&ppd, 0, sizeof(ppd)); ppd.shared = pdev; @@ -2503,6 +2504,14 @@ static int mv643xx_eth_shared_of_add_port(struct platform_device *pdev, return -EINVAL; } + while (dev_num < 3 && port_platdev[dev_num]) + dev_num++; + + if (dev_num == 3) { + dev_err(&pdev->dev, "too many ports registered\n"); + return -EINVAL; + } + mac_addr = of_get_mac_address(pnp); if (mac_addr) memcpy(ppd.mac_addr, mac_addr, 6); @@ -2521,7 +2530,7 @@ static int mv643xx_eth_shared_of_add_port(struct platform_device *pdev, of_property_read_u32(pnp, "duplex", &ppd.duplex); } - ppdev = platform_device_alloc(MV643XX_ETH_NAME, ppd.port_number); + ppdev = platform_device_alloc(MV643XX_ETH_NAME, dev_num); if (!ppdev) return -ENOMEM; ppdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); @@ -2538,7 +2547,7 @@ static int mv643xx_eth_shared_of_add_port(struct platform_device *pdev, if (ret) goto port_err; - port_platdev[ppd.port_number] = ppdev; + port_platdev[dev_num] = ppdev; return 0; -- 1.8.4.rc1