[S390] cio: split PGID settings and status

[pandora-kernel.git] / drivers / s390 / block / dasd_eckd.c

diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 417b97c..a8ec073 100644 (file)
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -86,7 +86,8 @@ dasd_eckd_probe (struct ccw_device *cdev)
        int ret;
 
        /* set ECKD specific ccw-device options */
-       ret = ccw_device_set_options(cdev, CCWDEV_ALLOW_FORCE);
+       ret = ccw_device_set_options(cdev, CCWDEV_ALLOW_FORCE |
+                                    CCWDEV_DO_PATHGROUP | CCWDEV_DO_MULTIPATH);
        if (ret) {
                DBF_EVENT(DBF_WARNING,
                       "dasd_eckd_probe: could not set ccw-device options "
@@ -1090,6 +1091,15 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
        struct dasd_block *block;
        int is_known, rc;
 
+       if (!ccw_device_is_pathgroup(device->cdev)) {
+               dev_warn(&device->cdev->dev,
+                        "A channel path group could not be established\n");
+               return -EIO;
+       }
+       if (!ccw_device_is_multipath(device->cdev)) {
+               dev_info(&device->cdev->dev,
+                        "The DASD is not operating in multipath mode\n");
+       }
        private = (struct dasd_eckd_private *) device->private;
        if (!private) {
                private = kzalloc(sizeof(*private), GFP_KERNEL | GFP_DMA);