1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/block/aoe/aoe.h b/drivers/block/aoe/aoe.h
index 721ba8086043..599951dc2c3b 100644
--- a/drivers/block/aoe/aoe.h
+++ b/drivers/block/aoe/aoe.h
@@ -7,12 +7,12 @@
  * default is 16, which is 15 partitions plus the whole disk
  */
 #ifndef AOE_PARTITIONS
-#define AOE_PARTITIONS 16
+#define AOE_PARTITIONS (16)
 #endif
 
-#define SYSMINOR(aoemajor, aoeminor) ((aoemajor) * 10 + (aoeminor))
-#define AOEMAJOR(sysminor) ((sysminor) / 10)
-#define AOEMINOR(sysminor) ((sysminor) % 10)
+#define SYSMINOR(aoemajor, aoeminor) ((aoemajor) * NPERSHELF + (aoeminor))
+#define AOEMAJOR(sysminor) ((sysminor) / NPERSHELF)
+#define AOEMINOR(sysminor) ((sysminor) % NPERSHELF)
 #define WHITESPACE " \t\v\f\n"
 
 enum {
@@ -83,7 +83,7 @@ enum {
 
 enum {
         MAXATADATA = 1024,
-        NPERSHELF = 10,
+        NPERSHELF = 16,         /* number of slots per shelf address */
         FREETAG = -1,
         MIN_BUFS = 8,
 };