[patch 21/52] [PATCH] dasd: enable prefix independent of pav support

[Martin Schwidefsky]

From: Stefan Weinhuber <wein@xxxxxxxxxx>

The DASD device driver needs to explicitly enable the prefix command
on the storage server, before it can be used. Originally we enabled
this command along with others only if we wanted to support PAV.
However, today we require this command for other features like
High Performance FICON as well, so we need to always enable prefix.

Signed-off-by: Stefan Weinhuber <wein@xxxxxxxxxx>
Signed-off-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
---

 drivers/s390/block/dasd_eckd.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Index: quilt-2.6/drivers/s390/block/dasd_eckd.c
===================================================================
--- quilt-2.6.orig/drivers/s390/block/dasd_eckd.c	2009-11-13 16:08:14.000000000 +0100
+++ quilt-2.6/drivers/s390/block/dasd_eckd.c	2009-11-13 16:08:16.000000000 +0100
@@ -1011,9 +1011,9 @@
 	}
 	psf_ssc_data = (struct dasd_psf_ssc_data *)cqr->data;
 	psf_ssc_data->order = PSF_ORDER_SSC;
-	psf_ssc_data->suborder = 0x40;
+	psf_ssc_data->suborder = 0xc0;
 	if (enable_pav) {
-		psf_ssc_data->suborder |= 0x88;
+		psf_ssc_data->suborder |= 0x08;
 		psf_ssc_data->reserved[0] = 0x88;
 	}
 	ccw = cqr->cpaddr;

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/