sunvdc: fix module unload/reload

Free resources allocated during port/disk probing so that the module may be
successfully reloaded after unloading.

Signed-off-by: Dwight Engen <dwight.engen@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/block/sunvdc.c b/drivers/block/sunvdc.c
index 0ebadf93b6c5..089ff9035de6 100644
--- a/drivers/block/sunvdc.c
+++ b/drivers/block/sunvdc.c
@@ -896,8 +896,19 @@ static int vdc_port_remove(struct vio_dev *vdev)
         struct vdc_port *port = dev_get_drvdata(&vdev->dev);
 
         if (port) {
+                unsigned long flags;
+
+                spin_lock_irqsave(&port->vio.lock, flags);
+                blk_stop_queue(port->disk->queue);
+                spin_unlock_irqrestore(&port->vio.lock, flags);
+
                 del_timer_sync(&port->vio.timer);
 
+                del_gendisk(port->disk);
+                blk_cleanup_queue(port->disk->queue);
+                put_disk(port->disk);
+                port->disk = NULL;
+
                 vdc_free_tx_ring(port);
                 vio_ldc_free(&port->vio);