correctly calculate device_info_size, as all struct members are known now

[usb-driver] / usb-driver.h

diff --git a/usb-driver.h b/usb-driver.h
index 2d184d66131f15e9eb0e727a39d398aac59a9501..f911a8f22faeeef924cebb683b1873c973a8c525 100644 (file)
--- a/usb-driver.h
+++ b/usb-driver.h
@@ -15,6 +15,8 @@
 
 #define MAGIC 0xa410b413UL
 
+#define WDU_GET_MAX_PACKET_SIZE(x)                ((unsigned short) (((x) & 0x7ff) * (1 + (((x) & 0x1800) >> 11))))
+
 /* http://www.jungo.com/support/documentation/windriver/811/wdusb_man_mhtml/node78.html#SECTION001734000000000000000 */
 
 struct header_struct {