[S390] add PAV support to the dasd driver.

Add support for parallel-access-volumes to the dasd driver. This
allows concurrent access to dasd devices with multiple channel
programs.

Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 3 insertions, 17 deletions

diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c
index d331c6e22c59..bb7755b9b19d 100644
--- a/drivers/s390/block/dasd_fba.c
+++ b/drivers/s390/block/dasd_fba.c
@@ -56,19 +56,13 @@ static struct ccw_driver dasd_fba_driver; /* see below */
 static int
 dasd_fba_probe(struct ccw_device *cdev)
 {
-        int ret;
-
-        ret = dasd_generic_probe (cdev, &dasd_fba_discipline);
-        if (ret)
-                return ret;
-        ccw_device_set_options(cdev, CCWDEV_DO_PATHGROUP);
-        return 0;
+        return dasd_generic_probe(cdev, &dasd_fba_discipline);
 }
 
 static int
 dasd_fba_set_online(struct ccw_device *cdev)
 {
-        return dasd_generic_set_online (cdev, &dasd_fba_discipline);
+        return dasd_generic_set_online(cdev, &dasd_fba_discipline);
 }
 
 static struct ccw_driver dasd_fba_driver = {
@@ -569,16 +563,8 @@ static struct dasd_discipline dasd_fba_discipline = {
 static int __init
 dasd_fba_init(void)
 {
-        int ret;
-
         ASCEBC(dasd_fba_discipline.ebcname, 4);
-
-        ret = ccw_driver_register(&dasd_fba_driver);
-        if (ret)
-                return ret;
-
-        dasd_generic_auto_online(&dasd_fba_driver);
-        return 0;
+        return ccw_driver_register(&dasd_fba_driver);
 }
 
 static void __exit