[S390] tape: cleanup reference counting

Rename tape_get_device to tape_find_device and tape_get_device_reference
to tape_get_device. The old names didn't make too much sense.

Follow the get_device()/put_device() semantic and convert tape_put_device
to a void function.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/s390/char/tape_char.c b/drivers/s390/char/tape_char.c
index b47e20d3d1da..d44e6981eeac 100644
--- a/drivers/s390/char/tape_char.c
+++ b/drivers/s390/char/tape_char.c
@@ -286,9 +286,9 @@ tapechar_open (struct inode *inode, struct file *filp)
 
         lock_kernel();
         minor = iminor(filp->f_path.dentry->d_inode);
-        device = tape_get_device(minor / TAPE_MINORS_PER_DEV);
+        device = tape_find_device(minor / TAPE_MINORS_PER_DEV);
         if (IS_ERR(device)) {
-                DBF_EVENT(3, "TCHAR:open: tape_get_device() failed\n");
+                DBF_EVENT(3, "TCHAR:open: tape_find_device() failed\n");
                 rc = PTR_ERR(device);
                 goto out;
         }
@@ -340,7 +340,8 @@ tapechar_release(struct inode *inode, struct file *filp)
                 device->char_data.idal_buf = NULL;
         }
         tape_release(device);
-        filp->private_data = tape_put_device(device);
+        filp->private_data = NULL;
+        tape_put_device(device);
 
         return 0;
 }