[PATCH 1/3] net: give a different name to rtl8169 interfaces

[ETIENNE DUBLE]

This commit implements the .bind member function,
and gives a different name to interfaces:
"RTL8169#0", "RTL8169#1", etc.

This was tested on a FriendlyElec Nanopi R5C board,
which has two RTL-8125B interfaces managed by this
driver. Since they were given the same name, it
was previously not possible to select the 2nd one
using ethact or ethprime environment variables.

Signed-off-by: Etienne Dublé <etienne.duble at imag.fr>
---

 drivers/net/rtl8169.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/net/rtl8169.c b/drivers/net/rtl8169.c
index 93e83661ce..b30d51731f 100644
--- a/drivers/net/rtl8169.c
+++ b/drivers/net/rtl8169.c
@@ -1091,6 +1091,16 @@ static int rtl8169_eth_probe(struct udevice *dev)
 	return 0;
 }
 
+static int rtl8169_eth_bind(struct udevice *dev)
+{
+	static int card_number;
+	char name[16];
+
+	sprintf(name, "RTL8169#%u", card_number++);
+
+	return device_set_name(dev, name);
+}
+
 static const struct eth_ops rtl8169_eth_ops = {
 	.start	= rtl8169_eth_start,
 	.send	= rtl8169_eth_send,
@@ -1108,6 +1118,7 @@ U_BOOT_DRIVER(eth_rtl8169) = {
 	.name	= "eth_rtl8169",
 	.id	= UCLASS_ETH,
 	.of_match = rtl8169_eth_ids,
+	.bind	= rtl8169_eth_bind,
 	.probe	= rtl8169_eth_probe,
 	.ops	= &rtl8169_eth_ops,
 	.priv_auto	= sizeof(struct rtl8169_private),
-- 
2.34.1