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path: root/drivers/net/can/usb/etas_es58x/es58x_core.c
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Diffstat (limited to 'drivers/net/can/usb/etas_es58x/es58x_core.c')
-rw-r--r--drivers/net/can/usb/etas_es58x/es58x_core.c46
1 files changed, 24 insertions, 22 deletions
diff --git a/drivers/net/can/usb/etas_es58x/es58x_core.c b/drivers/net/can/usb/etas_es58x/es58x_core.c
index d2bb1b56f962..126e4d57332e 100644
--- a/drivers/net/can/usb/etas_es58x/es58x_core.c
+++ b/drivers/net/can/usb/etas_es58x/es58x_core.c
@@ -2108,6 +2108,25 @@ static int es58x_init_netdev(struct es58x_device *es58x_dev, int channel_idx)
}
/**
+ * es58x_free_netdevs() - Release all network resources of the device.
+ * @es58x_dev: ES58X device.
+ */
+static void es58x_free_netdevs(struct es58x_device *es58x_dev)
+{
+ int i;
+
+ for (i = 0; i < es58x_dev->num_can_ch; i++) {
+ struct net_device *netdev = es58x_dev->netdev[i];
+
+ if (!netdev)
+ continue;
+ unregister_candev(netdev);
+ es58x_dev->netdev[i] = NULL;
+ free_candev(netdev);
+ }
+}
+
+/**
* es58x_get_product_info() - Get the product information and print them.
* @es58x_dev: ES58X device.
*
@@ -2240,18 +2259,11 @@ static int es58x_probe(struct usb_interface *intf,
for (ch_idx = 0; ch_idx < es58x_dev->num_can_ch; ch_idx++) {
ret = es58x_init_netdev(es58x_dev, ch_idx);
- if (ret)
- goto cleanup_candev;
- }
-
- return ret;
-
- cleanup_candev:
- for (ch_idx = 0; ch_idx < es58x_dev->num_can_ch; ch_idx++)
- if (es58x_dev->netdev[ch_idx]) {
- unregister_candev(es58x_dev->netdev[ch_idx]);
- free_candev(es58x_dev->netdev[ch_idx]);
+ if (ret) {
+ es58x_free_netdevs(es58x_dev);
+ return ret;
}
+ }
return ret;
}
@@ -2266,21 +2278,11 @@ static int es58x_probe(struct usb_interface *intf,
static void es58x_disconnect(struct usb_interface *intf)
{
struct es58x_device *es58x_dev = usb_get_intfdata(intf);
- struct net_device *netdev;
- int i;
dev_info(&intf->dev, "Disconnecting %s %s\n",
es58x_dev->udev->manufacturer, es58x_dev->udev->product);
- for (i = 0; i < es58x_dev->num_can_ch; i++) {
- netdev = es58x_dev->netdev[i];
- if (!netdev)
- continue;
- unregister_candev(netdev);
- es58x_dev->netdev[i] = NULL;
- free_candev(netdev);
- }
-
+ es58x_free_netdevs(es58x_dev);
es58x_free_urbs(es58x_dev);
usb_set_intfdata(intf, NULL);
}