1.1 --- a/xen/include/public/io/ring.h	Wed Oct 04 18:55:16 2006 +0100
     1.2 +++ b/xen/include/public/io/ring.h	Wed Oct 04 19:00:11 2006 +0100
     1.3 @@ -25,7 +25,7 @@ typedef unsigned int RING_IDX;
     1.4   * power of two (so we can mask with (size-1) to loop around).
     1.5   */
     1.6  #define __RING_SIZE(_s, _sz) \
     1.7 -    (__RD32(((_sz) - (long)&(_s)->ring + (long)(_s)) / sizeof((_s)->ring[0])))
     1.8 +    (__RD32(((_sz) - (long)(_s)->ring + (long)(_s)) / sizeof((_s)->ring[0])))
     1.9  
    1.10  /*
    1.11   * Macros to make the correct C datatypes for a new kind of ring.