1USB_INTERFACE_CLAIME(9) Host-Side Data Types and Macro USB_INTERFACE_CLAIME(9)
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6 usb_interface_claimed - returns true iff an interface is claimed
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9 int usb_interface_claimed(struct usb_interface * iface);
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12 iface
13 the interface being checked
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16 Returns true (nonzero) iff the interface is claimed, else false (zero).
17 Callers must own the driver model's usb bus readlock. So driver probe
18 entries don't need extra locking, but other call contexts may need to
19 explicitly claim that lock.
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22Kernel Hackers Manual 2.6. November 2011 USB_INTERFACE_CLAIME(9)