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POWhy is linux kernel not using my driver
 

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  1. POWhy is linux kernel not using my driver
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    <p>I have tried to write a simple linux char device driver using this tutorial: <a href="http://matthias.vallentin.net/blog/2007/04/writing-a-linux-kernel-driver-for-an-unknown-usb-device/" rel="nofollow">http://matthias.vallentin.net/blog/2007/04/writing-a-linux-kernel-driver-for-an-unknown-usb-device/</a></p> <p>I am using slightly newer device and slightly newer kernel. So I used their code changing product and vendor id and I am just trying to make kernel call probe function when device is attached which I failed to do looking at my /var/log/messages. Driver loads successfully: </p> <pre><code>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 </code></pre> <p>But when device is attached the driver is not used:</p> <pre><code>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 </code></pre> <p>The code I have that is responsible for making this association is:</p> <pre><code>#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, }; </code></pre> <p>My kernel version is 3.3.8</p> <p>Any ideas what might be wrong?</p> <p>BTW. I am completely new at this so it is very likely that I skipped some relevant information please ask me if something more is needed.</p>
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