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Date: Wed, 28 Mar 2007 20:51:51 -0400 From: Chris Snook <csnook@...hat.com> To: jeff@...zik.org Cc: jacliburn@...lsouth.net, netdev@...r.kernel.org Subject: [PATCH] atl1: save mac address on remove From: Chris Snook <csnook@...hat.com> Some atl1 boards get their MAC address written directly to the register by the BIOS during POST, rather than storing it in EEPROM that's accessible to the driver. If the MAC register on one of these boards is changed and then the module is unloaded, the permanent MAC address will be forgotten until the box is rebooted. We should save the permanent address during removal if we've been messing with it. Signed-off-by: Chris Snook <csnook@...hat.com> --- a/drivers/net/atl1/atl1_main.c 2007-03-01 14:14:48.000000000 -0500 +++ b/drivers/net/atl1/atl1_main.c 2007-03-01 16:59:59.000000000 -0500 @@ -2321,6 +2321,16 @@ static void __devexit atl1_remove(struct return; adapter = netdev_priv(netdev); + + /* Some atl1 boards lack persistent storage for their MAC, and get it + * from the BIOS during POST. If we've been messing with the MAC + * address, we need to save the permanent one. + */ + if (memcmp(adapter->hw.mac_addr, adapter->hw.perm_mac_addr, ETH_ALEN)) { + memcpy(adapter->hw.mac_addr, adapter->hw.perm_mac_addr, ETH_ALEN); + atl1_set_mac_addr(&adapter->hw); + } + iowrite16(0, adapter->hw.hw_addr + REG_GPHY_ENABLE); unregister_netdev(netdev); pci_iounmap(pdev, adapter->hw.hw_addr); - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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