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我尝试使用本教程编写一个简单的 linux char 设备驱动程序：http: //matthias.vallentin.net/blog/2007/04/writing-a-linux-kernel-driver-for-an-unknown-usb-device /

我正在使用稍新的设备和稍新的内核。因此，我使用了他们的代码更改产品和供应商 ID，并且我只是尝试在连接设备时进行内核调用探测功能，但我未能查看我的 /var/log/messages。驱动加载成功：

Sep  5 18:32:43 manticore kernel: [10673.664884] usbcore: deregistering interface driver missile_launcher
Sep  5 18:32:43 manticore kernel: [10673.664908] [info]  usb_ml_exit(661): module deregistered
Sep  5 18:32:43 manticore kernel: [10673.666314] usbcore: registered new interface driver missile_launcher
Sep  5 18:32:43 manticore kernel: [10673.666317] [info]  usb_ml_init(651): driver registered successfully

但是当设备连接时，驱动程序不被使用：

Sep  5 17:58:12 manticore kernel: [ 8607.295688] usb 3-1.1: New USB device found, idVendor=2123, idProduct=1010
Sep  5 17:58:12 manticore kernel: [ 8607.295689] usb 3-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Sep  5 17:58:12 manticore kernel: [ 8607.295691] usb 3-1.1: Product: USB Missile Launcher
Sep  5 17:58:12 manticore kernel: [ 8607.295693] usb 3-1.1: Manufacturer: Syntek
Sep  5 17:58:12 manticore kernel: [ 8607.295789] usb 3-1.1: usb_probe_device
Sep  5 17:58:12 manticore kernel: [ 8607.295791] usb 3-1.1: configuration #1 chosen from 1 choice
Sep  5 17:58:12 manticore kernel: [ 8607.295797] usb 3-1.1: ep 0x81 - rounding interval to 64 microframes, ep desc says 80 microframes
Sep  5 17:58:12 manticore kernel: [ 8607.295855] usb 3-1.1: Successful Endpoint Configure command
Sep  5 17:58:12 manticore kernel: [ 8607.296132] usb 3-1.1: adding 3-1.1:1.0 (config #1, interface 0)
Sep  5 17:58:12 manticore kernel: [ 8607.296173] usbhid 3-1.1:1.0: usb_probe_interface
Sep  5 17:58:12 manticore kernel: [ 8607.296174] usbhid 3-1.1:1.0: usb_probe_interface - got id
Sep  5 17:58:12 manticore kernel: [ 8607.298577] usbhid 3-1.1:1.0: looking for a minor, starting at 96
Sep  5 17:58:12 manticore kernel: [ 8607.298697] generic-usb 0003:2123:1010.0008: hiddev0,hidraw2: USB HID v1.10 Device [Syntek USB Missile Launcher] on usb-0000:00:14.0-1.1/input0
Sep  5 17:58:12 manticore kernel: [ 8607.298712] drivers/usb/core/inode.c: creating file '016'
Sep  5 17:58:12 manticore kernel: [ 8607.298754] hub 3-1:1.0: port 2, status 0101, change 0000, 12 Mb/s
Sep  5 17:58:12 manticore kernel: [ 8607.310627] hub 3-1:1.0: port 2 not reset yet, waiting 10ms
Sep  5 17:58:12 manticore kernel: [ 8607.372509] usb 3-1.2: new high-speed USB device number 17 using xhci_hcd
Sep  5 17:58:12 manticore kernel: [ 8607.418456] usb 3-1.2: skipped 1 descriptor after configuration
Sep  5 17:58:12 manticore kernel: [ 8607.418460] usb 3-1.2: skipped 6 descriptors after interface
Sep  5 17:58:12 manticore kernel: [ 8607.418462] usb 3-1.2: skipped 1 descriptor after endpoint
Sep  5 17:58:12 manticore kernel: [ 8607.418463] usb 3-1.2: skipped 9 descriptors after interface
Sep  5 17:58:12 manticore kernel: [ 8607.419100] usb 3-1.2: default language 0x0409
Sep  5 17:58:12 manticore kernel: [ 8607.421607] usb 3-1.2: udev 17, busnum 3, minor = 272

我负责建立此关联的代码是：

#define ML_VENDOR_ID    0x2123
#define ML_PRODUCT_ID   0x1010


static struct usb_device_id ml_table [] = {
        { USB_DEVICE(ML_VENDOR_ID, ML_PRODUCT_ID) },
        { }
};

static struct usb_driver ml_driver = {
        .name = "missile_launcher",
        .id_table = ml_table,
        .probe = ml_probe,
        .disconnect = ml_disconnect,
};

我的内核版本是 3.3.8

有什么想法可能是错的吗？

顺便提一句。我对此完全陌生，因此很可能我跳过了一些相关信息，请询问我是否需要更多信息。

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