On Mon, 18 Dec 2006 22:42:25 +0100, Paolo Abeni <[EMAIL PROTECTED]> wrote:
> I have modified the usbmon patch as described in my previous mail. Now a
> new device class is created: "usbmon". This class hold the sysfs entry
> for usbmon devices. This entries are created dynamically when the usb
> buses are registered, and destroyed accordingly. The whole thing
> integrate nicely with udev, with the following rule:
>
> KERNEL=="usbmon[0-9]*", NAME="usbmon%n", MODE="0440",OWNER="root",GROUP="bin"
OK, this is great. A couple of notes follow.
> + dev = class_device_create(mon_bin_class, 0,
> + mon_bin_dev0, 0, "usbmon0");
> + if (IS_ERR(dev)) {
> + rc = PTR_ERR(dev);
> + goto err_cdev;
> + }
....
> + class_device_destroy(mon_bin_class, mon_bin_dev0);
But what is usbmon0 for? We do not have it implemented yet, so there's
no reason to advertise it in the class. Or is there?
> + mon_bin_class = class_create(THIS_MODULE, "usbmon");
> + if (!mon_bin_class)
> + {
> + rc = -ENOMEM;
> + goto err_class;
> + }
I changed this to IS_ERR.
-- Pete
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