[PATCH v11 11/29] net: eth-uclass: add function eth_start_udev()

[Jerome Forissier]

Add a function to start a given network device, and update eth_init()
to use it.

Signed-off-by: Jerome Forissier <jerome.foriss...@linaro.org>
---
 include/net-common.h |  1 +
 net/eth-uclass.c     | 38 +++++++++++++++++++++++++-------------
 2 files changed, 26 insertions(+), 13 deletions(-)

diff --git a/include/net-common.h b/include/net-common.h
index 543f528a4a4..6bc76658d9d 100644
--- a/include/net-common.h
+++ b/include/net-common.h
@@ -192,6 +192,7 @@ int eth_env_set_enetaddr_by_index(const char *base_name, 
int index,
 int usb_ether_init(void);
 
 int eth_init(void);                    /* Initialize the device */
+int eth_start_udev(struct udevice *dev); /* ->start() if not already running */
 int eth_send(void *packet, int length);           /* Send a packet */
 #if defined(CONFIG_API) || defined(CONFIG_EFI_LOADER)
 int eth_receive(void *packet, int length); /* Receive a packet*/
diff --git a/net/eth-uclass.c b/net/eth-uclass.c
index e34d7af0229..5555f82f23e 100644
--- a/net/eth-uclass.c
+++ b/net/eth-uclass.c
@@ -284,6 +284,27 @@ static int on_ethaddr(const char *name, const char *value, 
enum env_op op,
 }
 U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr);
 
+int eth_start_udev(struct udevice *dev)
+{
+       struct eth_device_priv *priv = dev_get_uclass_priv(dev);
+       int ret;
+
+       if (priv->running)
+               return 0;
+
+       if (!device_active(dev))
+               return -EINVAL;
+
+       ret = eth_get_ops(dev)->start(dev);
+       if (ret < 0)
+               return ret;
+
+       priv->state = ETH_STATE_ACTIVE;
+       priv->running = true;
+
+       return 0;
+}
+
 int eth_init(void)
 {
        struct udevice *current = NULL;
@@ -328,20 +349,11 @@ int eth_init(void)
                if (current) {
                        debug("Trying %s\n", current->name);
 
-                       if (device_active(current)) {
-                               ret = eth_get_ops(current)->start(current);
-                               if (ret >= 0) {
-                                       struct eth_device_priv *priv =
-                                               dev_get_uclass_priv(current);
-
-                                       priv->state = ETH_STATE_ACTIVE;
-                                       priv->running = true;
-                                       ret = 0;
-                                       goto end;
-                               }
-                       } else {
+                       ret = eth_start_udev(current);
+                       if (ret < 0)
                                ret = eth_errno;
-                       }
+                       else
+                               break;
 
                        debug("FAIL\n");
                } else {
-- 
2.40.1