From: Rogan Dawes <ro...@dawes.za.net>

Some SATA controllers can operate in an IDE compatible mode (e.g. mvsata)
but will only ever have a single device per bus.

This allows the upcoming DNS323 port to properly identify and use
a drive on both SATA interfaces.
---
 include/ide.h |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/include/ide.h b/include/ide.h
index 6a1b7ae..c812b28 100644
--- a/include/ide.h
+++ b/include/ide.h
@@ -24,7 +24,8 @@
 #ifndef        _IDE_H
 #define _IDE_H
 
-#define        IDE_BUS(dev)    (dev >> 1)
+#define        IDE_BUS(dev)    (dev >> ((CONFIG_SYS_IDE_MAXDEVICE / \
+                               CONFIG_SYS_IDE_MAXBUS) - 1))
 
 #define        ATA_CURR_BASE(dev)      
(CONFIG_SYS_ATA_BASE_ADDR+ide_bus_offset[IDE_BUS(dev)])
 
-- 
1.7.1

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