[PATCH] drivers: s390/cio: Fix compilation warning about const qualifiers

[Suzuki K Poulose]

Update __ccwdev_check_busid() and __ccwgroupdev_check_busid() to use
"const" qualifiers to fix the compiler warning.

Reported-by: kbuild test robot <lkp at intel.com>
Cc: gregkh at linuxfoundation.org
Cc: devel at driverdev.osuosl.org
Signed-off-by: Suzuki K Poulose <suzuki.poulose at arm.com>
---
 drivers/s390/cio/ccwgroup.c | 2 +-
 drivers/s390/cio/device.c   | 4 +---
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index ea176157..c522e93 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -610,7 +610,7 @@ EXPORT_SYMBOL(ccwgroup_driver_unregister);
 
 static int __ccwgroupdev_check_busid(struct device *dev, const void *id)
 {
-	char *bus_id = id;
+	const char *bus_id = id;
 
 	return (strcmp(bus_id, dev_name(dev)) == 0);
 }
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index f27536b..1132482 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1655,9 +1655,7 @@ EXPORT_SYMBOL_GPL(ccw_device_force_console);
 static int
 __ccwdev_check_busid(struct device *dev, const void *id)
 {
-	char *bus_id;
-
-	bus_id = id;
+	const char *bus_id = id;
 
 	return (strcmp(bus_id, dev_name(dev)) == 0);
 }
-- 
2.7.4