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usb_driver_claim_interface(9) [centos man page]

USB_DRIVER_CLAIM_INT(9) 					   USB Core APIs					   USB_DRIVER_CLAIM_INT(9)

NAME
usb_driver_claim_interface - bind a driver to an interface SYNOPSIS
int usb_driver_claim_interface(struct usb_driver * driver, struct usb_interface * iface, void * priv); ARGUMENTS
driver the driver to be bound iface the interface to which it will be bound; must be in the usb device's active configuration priv driver data associated with that interface DESCRIPTION
This is used by usb device drivers that need to claim more than one interface on a device when probing (audio and acm are current examples). No device driver should directly modify internal usb_interface or usb_device structure members. Few drivers should need to use this routine, since the most natural way to bind to an interface is to return the private data from the driver's probe method. Callers must own the device lock, so driver probe entries don't need extra locking, but other call contexts may need to explicitly claim that lock. RETURN
0 on success. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 USB_DRIVER_CLAIM_INT(9)

Check Out this Related Man Page

USB_QUEUE_RESET_DEVI(9) 					   USB Core APIs					   USB_QUEUE_RESET_DEVI(9)

NAME
usb_queue_reset_device - Reset a USB device from an atomic context SYNOPSIS
void usb_queue_reset_device(struct usb_interface * iface); ARGUMENTS
iface USB interface belonging to the device to reset DESCRIPTION
This function can be used to reset a USB device from an atomic context, where usb_reset_device won't work (as it blocks). Doing a reset via this method is functionally equivalent to calling usb_reset_device, except for the fact that it is delayed to a workqueue. This means that any drivers bound to other interfaces might be unbound, as well as users from usbfs in user space. CORNER CASES
- Scheduling two resets at the same time from two different drivers attached to two different interfaces of the same device is possible; depending on how the driver attached to each interface handles ->pre_reset, the second reset might happen or not. - If a driver is unbound and it had a pending reset, the reset will be cancelled. - This function can be called during .probe or .disconnect times. On return from .disconnect, any pending resets will be cancelled. There is no no need to lock/unlock the reset_ws as schedule_work does its own. NOTE
We don't do any reference count tracking because it is not needed. The lifecycle of the work_struct is tied to the usb_interface. Before destroying the interface we cancel the work_struct, so the fact that work_struct is queued and or running means the interface (and thus, the device) exist and are referenced. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 USB_QUEUE_RESET_DEVI(9)

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