1 files changed, 6 insertions, 5 deletions

diff --git a/drivers/s390/char/monreader.c b/drivers/s390/char/monreader.c
index 66e21dd23154..2ed3f82e5c30 100644
--- a/drivers/s390/char/monreader.c
+++ b/drivers/s390/char/monreader.c
@@ -12,7 +12,6 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/init.h>
-#include <linux/smp_lock.h>
 #include <linux/errno.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
@@ -22,6 +21,7 @@
 #include <linux/interrupt.h>
 #include <linux/poll.h>
 #include <linux/device.h>
+#include <linux/slab.h>
 #include <net/iucv/iucv.h>
 #include <asm/uaccess.h>
 #include <asm/ebcdic.h>
@@ -283,7 +283,6 @@ static int mon_open(struct inode *inode, struct file *filp)
         /*
          * only one user allowed
          */
-        lock_kernel();
         rc = -EBUSY;
         if (test_and_set_bit(MON_IN_USE, &mon_in_use))
                 goto out;
@@ -321,7 +320,6 @@ static int mon_open(struct inode *inode, struct file *filp)
         }
         filp->private_data = monpriv;
         dev_set_drvdata(monreader_device, monpriv);
-        unlock_kernel();
         return nonseekable_open(inode, filp);
 
 out_path:
@@ -331,7 +329,6 @@ out_priv:
 out_use:
         clear_bit(MON_IN_USE, &mon_in_use);
 out:
-        unlock_kernel();
         return rc;
 }
 
@@ -533,7 +530,7 @@ static int monreader_restore(struct device *dev)
         return monreader_thaw(dev);
 }
 
-static struct dev_pm_ops monreader_pm_ops = {
+static const struct dev_pm_ops monreader_pm_ops = {
         .freeze  = monreader_freeze,
         .thaw    = monreader_thaw,
         .restore = monreader_restore,
@@ -607,6 +604,10 @@ static int __init mon_init(void)
         }
         dcss_mkname(mon_dcss_name, &user_data_connect[8]);
 
+        /*
+         * misc_register() has to be the last action in module_init(), because
+         * file operations will be available right after this.
+         */
         rc = misc_register(&mon_dev);
         if (rc < 0 )
                 goto out;