diff -crB backend/usb-unix.c backend-fixed//usb-unix.c
*** backend/usb-unix.c	2009-08-31 13:45:43.000000000 -0500
--- backend-fixed//usb-unix.c	2009-09-14 12:18:04.761452000 -0500
***************
*** 560,566 ****
   * 'side_cb()' - Handle side-channel requests...
   */
  
! static void
  side_cb(int         print_fd,		/* I - Print file */
          int         device_fd,		/* I - Device file */
          int         snmp_fd,		/* I - SNMP socket (unused) */
--- 560,566 ----
   * 'side_cb()' - Handle side-channel requests...
   */
  
! static int
  side_cb(int         print_fd,		/* I - Print file */
          int         device_fd,		/* I - Device file */
          int         snmp_fd,		/* I - SNMP socket (unused) */