[S390] dasd: Use const in busid functions.

We should use 'const char *' in the busid functions since the
strings are not modified anyway.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index 6c624bf44617..fb2f931cf844 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -598,7 +598,7 @@ struct dasd_device *dasd_device_from_cdev_locked(struct ccw_device *);
 struct dasd_device *dasd_device_from_devindex(int);
 
 int dasd_parse(void);
-int dasd_busid_known(char *);
+int dasd_busid_known(const char *);
 
 /* externals in dasd_gendisk.c */
 int  dasd_gendisk_init(void);