usb: gadget: Add variant of gether_setup to customize the device name
This is needed to avoid name collisions on SoCs that have both usb
gadget and usb host, where usb0 may be the rndis interface or a usb
ethernet adapter.
Signed-off-by: Mike Lockwood <lockwood@android.com>
Signed-off-by: Benoit Goby <benoit@android.com>
[make gether_setup a static inline function]
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c
index 29c854b..47cf48b 100644
--- a/drivers/usb/gadget/u_ether.c
+++ b/drivers/usb/gadget/u_ether.c
@@ -744,10 +744,11 @@
};
/**
- * gether_setup - initialize one ethernet-over-usb link
+ * gether_setup_name - initialize one ethernet-over-usb link
* @g: gadget to associated with these links
* @ethaddr: NULL, or a buffer in which the ethernet address of the
* host side of the link is recorded
+ * @netname: name for network device (for example, "usb")
* Context: may sleep
*
* This sets up the single network link that may be exported by a
@@ -756,7 +757,8 @@
*
* Returns negative errno, or zero on success
*/
-int gether_setup(struct usb_gadget *g, u8 ethaddr[ETH_ALEN])
+int gether_setup_name(struct usb_gadget *g, u8 ethaddr[ETH_ALEN],
+ const char *netname)
{
struct eth_dev *dev;
struct net_device *net;
@@ -780,7 +782,7 @@
/* network device setup */
dev->net = net;
- strcpy(net->name, "usb%d");
+ snprintf(net->name, sizeof(net->name), "%s%%d", netname);
if (get_ether_addr(dev_addr, net->dev_addr))
dev_warn(&g->dev,