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-rw-r--r--include/linux/usb.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 72a0e7d..3049707 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -828,6 +828,27 @@ static inline int usb_make_path(struct usb_device *dev, char *buf, size_t size)
.bInterfaceSubClass = (sc), \
.bInterfaceProtocol = (pr)
+/**
+ * USB_VENDOR_AND_INTERFACE_INFO - describe a specific usb vendor with a class of usb interfaces
+ * @vend: the 16 bit USB Vendor ID
+ * @cl: bInterfaceClass value
+ * @sc: bInterfaceSubClass value
+ * @pr: bInterfaceProtocol value
+ *
+ * This macro is used to create a struct usb_device_id that matches a
+ * specific vendor with a specific class of interfaces.
+ *
+ * This is especially useful when explicitly matching devices that have
+ * vendor specific bDeviceClass values, but standards-compliant interfaces.
+ */
+#define USB_VENDOR_AND_INTERFACE_INFO(vend, cl, sc, pr) \
+ .match_flags = USB_DEVICE_ID_MATCH_INT_INFO \
+ | USB_DEVICE_ID_MATCH_VENDOR, \
+ .idVendor = (vend), \
+ .bInterfaceClass = (cl), \
+ .bInterfaceSubClass = (sc), \
+ .bInterfaceProtocol = (pr)
+
/* ----------------------------------------------------------------------- */
/* Stuff for dynamic usb ids */