On 11/04/2008 11:51 PM, Oliver Neukum wrote: > If you call usb_register_dev() before you set > hiddev_table[usbhid->intf->minor - HIDDEV_MINOR_BASE] > this check in hiddev_open() may fail: > if (i >= HIDDEV_MINORS || i < 0 || !hiddev_table[i]) > return -ENODEV; I think, that's the point. You should also get ENODEV if you don't call usb_register_dev(), create a node for non-existent minor manually and try to open it. It behaves the same as if there was a lock you suggested... Ex.: # grep 137 /proc/devices # mknod node c 137 0 # cat node cat: node: No such device or address -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
