aic7xxx (O2 scsi) DMA coherency

[Vivien Chappelier <vivien.chappelier@enst-bretagne.fr>]

Hello,

	This tells the aic7xxx to use DMA safe memory for I/O.

Vivien Chappelier.
diff -Naur linux/drivers/scsi/aic7xxx/aic7xxx_linux_host.h linux.patch/drivers/scsi/aic7xxx/aic7xxx_linux_host.h
--- linux/drivers/scsi/aic7xxx/aic7xxx_linux_host.h	Thu Dec 20 18:31:11 2001
+++ linux.patch/drivers/scsi/aic7xxx/aic7xxx_linux_host.h	Thu Dec 20 21:43:31 2001
@@ -87,7 +87,7 @@
 	sg_tablesize: 0,	/* max scatter-gather cmds    */\
 	cmd_per_lun: 2,		/* cmds per lun		      */\
 	present: 0,		/* number of 7xxx's present   */\
-	unchecked_isa_dma: 0,	/* no memory DMA restrictions */\
+	unchecked_isa_dma: 1,					\
 	use_clustering: ENABLE_CLUSTERING,			\
 	highmem_io: 1						\
 }