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-rw-r--r--sys/dev/usb/usbdi.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/sys/dev/usb/usbdi.h b/sys/dev/usb/usbdi.h
index 6d4a911b0d13..b88a65557aac 100644
--- a/sys/dev/usb/usbdi.h
+++ b/sys/dev/usb/usbdi.h
@@ -195,6 +195,16 @@ struct usb_xfer_flags {
uint8_t stall_pipe:1; /* set if the endpoint belonging to
* this USB transfer should be stalled
* before starting this transfer! */
+ uint8_t pre_scale_frames:1; /* "usb_config->frames" is
+ * assumed to give the
+ * buffering time in
+ * milliseconds and is
+ * converted into the nearest
+ * number of frames when the
+ * USB transfer is setup. This
+ * option only has effect for
+ * ISOCHRONOUS transfers.
+ */
};
/*