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USB: add USB_DEVICE_INTERFACE_CLASS macro 

Matching on device and interface class with with unspecified
subclass and protocol is sometimes useful.  This is slightly
different from USB_DEVICE_AND_INTERFACE_INFO which requires
the full interface class/subclass/protocol triplet.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bjørn Mork 2012-10-31 06:08:39 +01:00 committed by Greg Kroah-Hartman
parent 1b95bee563
commit 17b72feb2b
1 changed files with 16 additions and 0 deletions
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16
include/linux/usb.h
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@ -807,6 +807,22 @@ static inline int usb_make_path(struct usb_device *dev, char *buf, size_t size)
.bcdDevice_lo = (lo), \
.bcdDevice_hi = (hi)
/**
* USB_DEVICE_INTERFACE_CLASS - describe a usb device with a specific interface class
* @vend: the 16 bit USB Vendor ID
* @prod: the 16 bit USB Product ID
* @cl: bInterfaceClass value
*
* This macro is used to create a struct usb_device_id that matches a
* specific interface class of devices.
*/
#define USB_DEVICE_INTERFACE_CLASS(vend, prod, cl) \
.match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
USB_DEVICE_ID_MATCH_INT_CLASS, \
.idVendor = (vend), \
.idProduct = (prod), \
.bInterfaceClass = (cl)
/**
* USB_DEVICE_INTERFACE_PROTOCOL - describe a usb device with a specific interface protocol
* @vend: the 16 bit USB Vendor ID