[S390] tape: Fix device online messages

Currently, when a tape device is set online and no cartridge is loaded, we
get the messages "The tape cartridge has been successfully unloaded" and
"Determining the size of the recorded area". These messages are not correct.
To fix this, we now print the "cartridge loaded/unloaded" messages only,
when the load/unload event really occurs. In addition to that, the message
"Determining the size of the recorded area" is only printed, if a cartridge
is loaded.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

2 files changed, 8 insertions, 6 deletions

diff --git a/drivers/s390/char/tape_block.c b/drivers/s390/char/tape_block.c
index 47ff695255ea..1c2a582e626c 100644
--- a/drivers/s390/char/tape_block.c
+++ b/drivers/s390/char/tape_block.c
@@ -302,8 +302,6 @@ tapeblock_revalidate_disk(struct gendisk *disk)
         if (!device->blk_data.medium_changed)
                 return 0;
 
-        dev_info(&device->cdev->dev, "Determining the size of the recorded "
-                "area...\n");
         rc = tape_mtop(device, MTFSFM, 1);
         if (rc)
                 return rc;
@@ -312,6 +310,8 @@ tapeblock_revalidate_disk(struct gendisk *disk)
         if (rc < 0)
                 return rc;
 
+        dev_info(&device->cdev->dev, "Determining the size of the recorded "
+                "area...\n");
         DBF_LH(3, "Image file ends at %d\n", rc);
         nr_of_blks = rc;
 
diff --git a/drivers/s390/char/tape_core.c b/drivers/s390/char/tape_core.c
index 7424d648e81f..934a42ebe11f 100644
--- a/drivers/s390/char/tape_core.c
+++ b/drivers/s390/char/tape_core.c
@@ -214,13 +214,15 @@ tape_med_state_set(struct tape_device *device, enum tape_medium_state newstate)
         switch(newstate){
         case MS_UNLOADED:
                 device->tape_generic_status |= GMT_DR_OPEN(~0);
-                dev_info(&device->cdev->dev, "The tape cartridge has been "
-                        "successfully unloaded\n");
+                if (device->medium_state == MS_LOADED)
+                        dev_info(&device->cdev->dev, "The tape cartridge has "
+                                 "been successfully unloaded\n");
                 break;
         case MS_LOADED:
                 device->tape_generic_status &= ~GMT_DR_OPEN(~0);
-                dev_info(&device->cdev->dev, "A tape cartridge has been "
-                        "mounted\n");
+                if (device->medium_state == MS_UNLOADED)
+                        dev_info(&device->cdev->dev, "A tape cartridge has "
+                                 "been mounted\n");
                 break;
         default:
                 // print nothing