Get USB Device Class Type and Mount point

[Abhijit Pawar]

oops. I tried getting interface descriptor from usb interface which is
wrong. However still I am not able to get the class type from device
descriptor.

Regards,
Abhijit Pawar


On 9 February 2012 11:40, Abhijit Pawar <apawar.linux at gmail.com> wrote:

> Hi ,
> Is there any way we can get the class type of the attached USB device
> through struct usb_device in a kernel module?
>
> I tried getting the device descriptor and interface descriptor and then
> use them to get the Device and Interface Class and Subclass.
>
> struct usb_device_descriptor *descriptor = &usbDev->descriptor;
>
> struct usb_interface_descriptor *idesc = to_usb_interface(usbDev);
>
> Whenever I run my kernel module, I get 0 for DeviceClass and Interface
> Class. I checked the meaning and it says its the information and to be
> gathered through interface.
>
> Am I missing something here? What I want is to get the mount point /
> device path of the USB devices. Like for Storage Device I would like to get
> its mount path and for HID I would like to get its device path.
>
> Regards,
> Abhijit Pawar
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