[patch 4/17] s390: BIODASDPRRD ioctl return code.

[Martin Schwidefsky <schwidefsky@de.ibm.com>]

From: Horst Hummel <horst.hummel@de.ibm.com>

[patch 4/17] s390: BIODASDPRRD ioctl return code.

The IOCTL BIODASDPRRD had no return code for 'profiling is
inactive' and therefore tunedasd wrote misleading message for
request-counter = 0.
Introduce return-code EIO for inactive profiling.

Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

---

 drivers/s390/block/dasd_ioctl.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletion(-)

diff -urpN linux-2.6/drivers/s390/block/dasd_ioctl.c linux-2.6-patched/drivers/s390/block/dasd_ioctl.c
--- linux-2.6/drivers/s390/block/dasd_ioctl.c	2005-10-28 02:02:08.000000000 +0200
+++ linux-2.6-patched/drivers/s390/block/dasd_ioctl.c	2005-12-09 14:24:23.000000000 +0100
@@ -7,7 +7,7 @@
  * Bugreports.to..: <Linux390@de.ibm.com>
  * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999-2001
  *
- * $Revision: 1.47 $
+ * $Revision: 1.50 $
  *
  * i/o controls for the dasd driver.
  */
@@ -352,6 +352,9 @@ dasd_ioctl_read_profile(struct block_dev
 	if (device == NULL)
 		return -ENODEV;
 
+	if (dasd_profile_level == DASD_PROFILE_OFF)
+		return -EIO;
+
 	if (copy_to_user((long __user *) args, (long *) &device->profile,
 			 sizeof (struct dasd_profile_info_t)))
 		return -EFAULT;
-
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