[U-Boot] [PATCH 1/2] net/eth.c: make eth_get_dev_by_name(NULL) safe

[helmut.raiger at hale.at]

From: Helmut Raiger <helmut.raiger at hale.at>

eth_get_dev_by_name() is not safe to use for devname being NULL
as it uses strcmp. This patch makes it return NULL if devname NULL
is passed.

Signed-off-by: Helmut Raiger <helmut.raiger at hale.at>
---
 net/eth.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/net/eth.c b/net/eth.c
index 6523834..c75b7c9 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -107,7 +107,7 @@ struct eth_device *eth_get_dev_by_name(const char *devname)
 {
 	struct eth_device *dev, *target_dev;
 
-	if (!eth_devices)
+	if (!eth_devices || !devname)
 		return NULL;
 
 	dev = eth_devices;
-- 
1.7.4.4



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