3 files changed, 21 insertions, 11 deletions
diff --git a/net/lwip/dhcp.c b/net/lwip/dhcp.c
index 23b56226921..9b882cf5b87 100644
--- a/net/lwip/dhcp.c
+++ b/net/lwip/dhcp.c
@@ -27,9 +27,9 @@ static void call_lwip_dhcp_fine_tmr(void *ctx)
 
 static int dhcp_loop(struct udevice *udev)
 {
-	char *ipstr = "ipaddr\0\0";
-	char *maskstr = "netmask\0\0";
-	char *gwstr = "gatewayip\0\0";
+	char ipstr[] = "ipaddr\0\0";
+	char maskstr[] = "netmask\0\0";
+	char gwstr[] = "gatewayip\0\0";
 	unsigned long start;
 	struct netif *netif;
 	struct dhcp *dhcp;
@@ -111,9 +111,21 @@ static int dhcp_loop(struct udevice *udev)
 
 int do_dhcp(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 {
+	int ret;
+
 	eth_set_current();
 
-	return dhcp_loop(eth_get_dev());
+	ret = dhcp_loop(eth_get_dev());
+	if (ret)
+		return ret;
+
+	if (argc > 1) {
+		struct cmd_tbl cmdtp = {};
+
+		return do_tftpb(&cmdtp, 0, argc, argv);
+	}
+
+	return CMD_RET_SUCCESS;
 }
 
 int dhcp_run(ulong addr, const char *fname, bool autoload)
diff --git a/net/lwip/net-lwip.c b/net/lwip/net-lwip.c
index 470217781a4..b863047f598 100644
--- a/net/lwip/net-lwip.c
+++ b/net/lwip/net-lwip.c
@@ -91,9 +91,9 @@ struct netif *net_lwip_get_netif(void)
 static int get_udev_ipv4_info(struct udevice *dev, ip4_addr_t *ip,
 			      ip4_addr_t *mask, ip4_addr_t *gw)
 {
-	char *ipstr = "ipaddr\0\0";
-	char *maskstr = "netmask\0\0";
-	char *gwstr = "gatewayip\0\0";
+	char ipstr[] = "ipaddr\0\0";
+	char maskstr[] = "netmask\0\0";
+	char gwstr[] = "gatewayip\0\0";
 	int idx = dev_seq(dev);
 	char *env;
 
diff --git a/net/lwip/wget.c b/net/lwip/wget.c
index e85d57bc1dd..062aa7c44f0 100644
--- a/net/lwip/wget.c
+++ b/net/lwip/wget.c
@@ -42,7 +42,6 @@ int mbedtls_hardware_poll(void *data, unsigned char *output, size_t len,
 			  size_t *olen)
 {
 	struct udevice *dev;
-	u64 rng = 0;
 	int ret;
 
 	*olen = 0;
@@ -52,12 +51,11 @@ int mbedtls_hardware_poll(void *data, unsigned char *output, size_t len,
 		log_err("Failed to get an rng: %d\n", ret);
 		return ret;
 	}
-	ret = dm_rng_read(dev, &rng, sizeof(rng));
+	ret = dm_rng_read(dev, output, len);
 	if (ret)
 		return ret;
 
-	memcpy(output, &rng, len);
-	*olen = sizeof(rng);
+	*olen = len;
 
 	return 0;
 }