[U-Boot] [PATCH] fdt: fix setting MAC addresses for multiple interfaces

[Lev Iserovich]

For multiple ethernet interfaces the FDT offset of '/aliases' will change as we
are adding MAC addresses to the FDT.
Therefore only the first interface ('ethernet0') will get properly updated in
the FDT, with the rest getting FDT errors when we try to set their MAC address.

Switch to using fdt_get_alias() which is the proper way to get the FDT path.

Signed-off-by: Lev Iserovich <iserovil at deshawresearch.com>
---

 common/fdt_support.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/common/fdt_support.c b/common/fdt_support.c
index 66464db..20e0e1c 100644
--- a/common/fdt_support.c
+++ b/common/fdt_support.c
@@ -481,16 +481,12 @@ int fdt_fixup_memory(void *blob, u64 start, u64 size)
 
 void fdt_fixup_ethernet(void *fdt)
 {
-	int node, i, j;
+	int i, j;
 	char enet[16], *tmp, *end;
 	char mac[16];
 	const char *path;
 	unsigned char mac_addr[6];
 
-	node = fdt_path_offset(fdt, "/aliases");
-	if (node < 0)
-		return;
-
 	if (!getenv("ethaddr")) {
 		if (getenv("usbethaddr")) {
 			strcpy(mac, "usbethaddr");
@@ -505,7 +501,7 @@ void fdt_fixup_ethernet(void *fdt)
 	i = 0;
 	while ((tmp = getenv(mac)) != NULL) {
 		sprintf(enet, "ethernet%d", i);
-		path = fdt_getprop(fdt, node, enet, NULL);
+		path = fdt_get_alias(fdt, enet);
 		if (!path) {
 			debug("No alias for %s\n", enet);
 			sprintf(mac, "eth%daddr", ++i);
-- 
2.1.0