X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/usb-driver/blobdiff_plain/3be69a94facf84cca07986b87e41e7684a903773..795992adafc1a2fdfb06b91c957dc3759e0a6c39:/usb-driver.h

diff --git a/usb-driver.h b/usb-driver.h
index 2d184d6..f911a8f 100644
--- 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 {