diff mbox series

[1/8] net: eth-uclass: add return value check

Message ID 20200428030228.19964-2-peng.fan@nxp.com
State Superseded
Headers show
Series net: several updates to support i.MX | expand

Commit Message

Peng Fan April 28, 2020, 3:02 a.m. UTC 
Add return value check

Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
 net/eth-uclass.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/net/eth-uclass.c b/net/eth-uclass.c
index 8bf2eabe90..950a48d520 100644
--- a/net/eth-uclass.c
+++ b/net/eth-uclass.c
@@ -40,8 +40,12 @@  static int eth_errno;
 static struct eth_uclass_priv *eth_get_uclass_priv(void)
 {
 	struct uclass *uc;
+	int ret;
+
+	ret = uclass_get(UCLASS_ETH, &uc);
+	if (ret)
+		return NULL;
 
-	uclass_get(UCLASS_ETH, &uc);
 	assert(uc);
 	return uc->priv;
 }
@@ -102,6 +106,7 @@  struct udevice *eth_get_dev_by_name(const char *devname)
 	struct udevice *it;
 	struct uclass *uc;
 	int len = strlen("eth");
+	int ret;
 
 	/* Must be longer than 3 to be an alias */
 	if (!strncmp(devname, "eth", len) && strlen(devname) > len) {
@@ -109,7 +114,10 @@  struct udevice *eth_get_dev_by_name(const char *devname)
 		seq = simple_strtoul(startp, &endp, 10);
 	}
 
-	uclass_get(UCLASS_ETH, &uc);
+	ret = uclass_get(UCLASS_ETH, &uc);
+	if (ret)
+		return NULL;
+
 	uclass_foreach_dev(it, uc) {
 		/*
 		 * We need the seq to be valid, so try to probe it.