From: Bin Meng <bmeng.cn@gmail.com>
Date: Fri, 28 Aug 2015 05:25:54 +0000 (-0700)
Subject: dm: eth: Correctly detect alias in eth_get_dev_by_name()
X-Git-Tag: KARO-TXSD-2017-03-15~3419
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e408c42189861b5ca18993e8fbb6975e67d4d442;hp=71d7971facdba763c220ca2cfdbd181e907eae89;p=karo-tx-uboot.git

dm: eth: Correctly detect alias in eth_get_dev_by_name()

When given a device name string, we should test to see if it is
really an alias like "eth#".

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
---

diff --git a/net/eth.c b/net/eth.c
index c46a8c3050..26520d3038 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -195,10 +195,11 @@ struct udevice *eth_get_dev_by_name(const char *devname)
 	const char *startp = NULL;
 	struct udevice *it;
 	struct uclass *uc;
+	int len = strlen("eth");
 
 	/* Must be longer than 3 to be an alias */
-	if (strlen(devname) > strlen("eth")) {
-		startp = devname + strlen("eth");
+	if (!strncmp(devname, "eth", len) && strlen(devname) > len) {
+		startp = devname + len;
 		seq = simple_strtoul(startp, &endp, 10);
 	}