diff -Naurp ./drivers/scsi/aacraid/aachba.c~aachba_const ./drivers/scsi/aacraid/aachba.c
--- ./drivers/scsi/aacraid/aachba.c~aachba_const	2004-11-16 13:33:33.951988776 -0800
+++ ./drivers/scsi/aacraid/aachba.c	2004-11-16 14:27:58.464707408 -0800
@@ -1137,7 +1137,7 @@ int aac_scsi_cmd(struct scsi_cmnd * scsi
 		char *cp;
 
 		dprintk((KERN_DEBUG "READ CAPACITY command.\n"));
-		if (fsa_dev_ptr[cid].size <= 0x100000000)
+		if (fsa_dev_ptr[cid].size <= 0x100000000ULL)
 			capacity = fsa_dev_ptr[cid].size - 1;
 		else
 			capacity = (u32)-1;