[S390] Use s390_root_dev_* in kvm_virtio.

No need to define a static device for the kvm_s390 root device,
just use s390_root_dev_register().

This is needed for the bus_id rework

Acked-by: Carsten Otte <cotte@de.ibm.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 7 insertions, 8 deletions

diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c
index 292b60da6dc7..ff4a6931bb8e 100644
--- a/drivers/s390/kvm/kvm_virtio.c
+++ b/drivers/s390/kvm/kvm_virtio.c
@@ -24,6 +24,7 @@
 #include <asm/kvm_virtio.h>
 #include <asm/setup.h>
 #include <asm/s390_ext.h>
+#include <asm/s390_rdev.h>
 
 #define VIRTIO_SUBCODE_64 0x0D00
 
@@ -241,10 +242,7 @@ static struct virtio_config_ops kvm_vq_configspace_ops = {
  * The root device for the kvm virtio devices.
  * This makes them appear as /sys/devices/kvm_s390/0,1,2 not /sys/devices/0,1,2.
  */
-static struct device kvm_root = {
-        .parent = NULL,
-        .bus_id = "kvm_s390",
-};
+static struct device *kvm_root;
 
 /*
  * adds a new device and register it with virtio
@@ -261,7 +259,7 @@ static void add_kvm_device(struct kvm_device_desc *d, unsigned int offset)
                 return;
         }
 
-        kdev->vdev.dev.parent = &kvm_root;
+        kdev->vdev.dev.parent = kvm_root;
         kdev->vdev.id.device = d->type;
         kdev->vdev.config = &kvm_vq_configspace_ops;
         kdev->desc = d;
@@ -317,15 +315,16 @@ static int __init kvm_devices_init(void)
         if (!MACHINE_IS_KVM)
                 return -ENODEV;
 
-        rc = device_register(&kvm_root);
-        if (rc) {
+        kvm_root = s390_root_dev_register("kvm_s390");
+        if (IS_ERR(kvm_root)) {
+                rc = PTR_ERR(kvm_root);
                 printk(KERN_ERR "Could not register kvm_s390 root device");
                 return rc;
         }
 
         rc = vmem_add_mapping(PFN_PHYS(max_pfn), PAGE_SIZE);
         if (rc) {
-                device_unregister(&kvm_root);
+                s390_root_dev_unregister(kvm_root);
                 return rc;
         }