diff -ru a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
--- a/drivers/scsi/aacraid/aachba.c	2007-05-29 11:57:47.332437519 -0400
+++ b/drivers/scsi/aacraid/aachba.c	2007-05-29 12:37:04.581386639 -0400
@@ -31,9 +31,9 @@
 #include <linux/slab.h>
 #include <linux/completion.h>
 #include <linux/blkdev.h>
-#include <linux/dma-mapping.h>
 #include <asm/semaphore.h>
 #include <asm/uaccess.h>
+#include <linux/highmem.h> /* For flush_kernel_dcache_page */
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
@@ -355,7 +355,9 @@
 		memcpy(buf + offset, data, transfer_len);
 
-	if (scsicmd->use_sg) 
+	if (scsicmd->use_sg) {
+		flush_kernel_dcache_page(kmap_atomic_to_page(buf - sg->offset));
 		kunmap_atomic(buf - sg->offset, KM_IRQ0);
+	}
 
 }