From: olof@lixom.net <olof@lixom.net>
Date: Sat, 12 May 2007 19:57:46 +0000 (-0500)
Subject: pasemi_mac: Fix local-mac-address parsing
X-Git-Tag: v2.6.22-rc2~88^2~2
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1af7f05628fab81fdf4412d757676412ba5db660;p=linux-2.6

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 <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---

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;
 }