From 1af7f05628fab81fdf4412d757676412ba5db660 Mon Sep 17 00:00:00 2001 From: "olof@lixom.net" Date: Sat, 12 May 2007 14:57:46 -0500 Subject: [PATCH] pasemi_mac: Fix local-mac-address parsing Turns out we have an old version of firmware that stores the mac address in 'mac-address' as a string instead of a byte array. All versions that use local-mac-address should have it as byte array, so no need to do string parsing for that case. Signed-off-by: Olof Johansson Signed-off-by: Jeff Garzik --- drivers/net/pasemi_mac.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/drivers/net/pasemi_mac.c b/drivers/net/pasemi_mac.c index 933d564768..8d38425e46 100644 --- a/drivers/net/pasemi_mac.c +++ b/drivers/net/pasemi_mac.c @@ -85,6 +85,7 @@ static int pasemi_get_mac_addr(struct pasemi_mac *mac) { struct pci_dev *pdev = mac->pdev; struct device_node *dn = pci_device_to_OF_node(pdev); + int len; const u8 *maddr; u8 addr[6]; @@ -94,9 +95,17 @@ static int pasemi_get_mac_addr(struct pasemi_mac *mac) return -ENOENT; } - maddr = of_get_property(dn, "local-mac-address", NULL); + maddr = of_get_property(dn, "local-mac-address", &len); + + if (maddr && len == 6) { + memcpy(mac->mac_addr, maddr, 6); + return 0; + } + + /* Some old versions of firmware mistakenly uses mac-address + * (and as a string) instead of a byte array in local-mac-address. + */ - /* Fall back to mac-address for older firmware */ if (maddr == NULL) maddr = of_get_property(dn, "mac-address", NULL); @@ -106,6 +115,7 @@ static int pasemi_get_mac_addr(struct pasemi_mac *mac) return -ENOENT; } + if (sscanf(maddr, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &addr[0], &addr[1], &addr[2], &addr[3], &addr[4], &addr[5]) != 6) { dev_warn(&pdev->dev, @@ -113,7 +123,8 @@ static int pasemi_get_mac_addr(struct pasemi_mac *mac) return -EINVAL; } - memcpy(mac->mac_addr, addr, sizeof(addr)); + memcpy(mac->mac_addr, addr, 6); + return 0; } -- 2.39.2