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SubjectRe: [PATCHv3] drivers/net/usb: Add new driver ipheth
Hello,

Thanks for the comments. I've already fixed a few things. We'll fix the remaining ones (below) ASAP.

Regards,
Daniel Borca

On 31.03.2010, at 23:33, Oliver Neukum <oliver@neukum.org> wrote:

Am Mittwoch, 31. März 2010 21:42:07 schrieb L. Alberto Giménez:

Hi,

a few comments below.

Regards
Oliver

+
+static int ipheth_open(struct net_device *net)
+{
+ struct ipheth_device *dev = netdev_priv(net);
+ struct usb_device *udev = dev->udev;
+ int retval = 0;
+
+ usb_set_interface(udev, IPHETH_INTFNUM, IPHETH_ALT_INTFNUM);
+ usb_clear_halt(udev, usb_rcvbulkpipe(udev, dev->bulk_in));
+ usb_clear_halt(udev, usb_sndbulkpipe(udev, dev->bulk_out));

Is this really needed? If so, please add a comment.

+
+ retval = ipheth_carrier_set(dev);
+ if (retval)
+ goto error;
+
+ retval = ipheth_rx_submit(dev, GFP_KERNEL);
+ if (retval)
+ goto error;
+
+ schedule_delayed_work(&dev->carrier_work, IPHETH_CARRIER_CHECK_TIMEOUT);

Does it make sense to start rx while you have no carrier?

+static int ipheth_tx(struct sk_buff *skb, struct net_device *net)
+{
+ struct ipheth_device *dev = netdev_priv(net);
+ struct usb_device *udev = dev->udev;
+ int retval;
+
+ /* Paranoid */
+ if (skb->len > IPHETH_BUF_SIZE) {
+ err("%s: skb too large: %d bytes", __func__, skb->len);
+ dev->stats.tx_dropped++;
+ dev_kfree_skb_irq(skb);
+ goto exit;
+ }
+
+ memset(dev->tx_buf, 0, IPHETH_BUF_SIZE);
+ memcpy(dev->tx_buf, skb->data, skb->len);

a bit wasteful

+static void ipheth_disconnect(struct usb_interface *intf)
+{
+ struct ipheth_device *dev;
+
+ dev = usb_get_intfdata(intf);
+ if (dev != NULL) {

is this check needed?

+static struct usb_driver ipheth_driver = {
+ .name = "ipheth",
+ .probe = ipheth_probe,
+ .disconnect = ipheth_disconnect,
+ .id_table = ipheth_table,
+ .supports_autosuspend = 0,

redundant





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