1 files changed, 20 insertions, 28 deletions

diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
index 4431578d8c4..7c71e7b4feb 100644
--- a/drivers/sbus/char/display7seg.c
+++ b/drivers/sbus/char/display7seg.c
@@ -9,13 +9,13 @@
 #include <linux/fs.h>
 #include <linux/errno.h>
 #include <linux/major.h>
-#include <linux/init.h>
 #include <linux/miscdevice.h>
 #include <linux/ioport.h>		/* request_region */
-#include <linux/smp_lock.h>
+#include <linux/slab.h>
+#include <linux/mutex.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
-#include <asm/atomic.h>
+#include <linux/atomic.h>
 #include <asm/uaccess.h>		/* put_/get_user			*/
 #include <asm/io.h>
 
@@ -25,6 +25,7 @@
 #define DRIVER_NAME	"d7s"
 #define PFX		DRIVER_NAME ": "
 
+static DEFINE_MUTEX(d7s_mutex);
 static int sol_compat = 0;		/* Solaris compatibility mode	*/
 
 /* Solaris compatibility flag -
@@ -73,7 +74,6 @@ static int d7s_open(struct inode *inode, struct file *f)
 {
 	if (D7S_MINOR != iminor(inode))
 		return -ENODEV;
-	cycle_kernel_lock();
 	atomic_inc(&d7s_users);
 	return 0;
 }
@@ -106,10 +106,10 @@ static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	int error = 0;
 	u8 ireg = 0;
 
-	if (D7S_MINOR != iminor(file->f_path.dentry->d_inode))
+	if (D7S_MINOR != iminor(file_inode(file)))
 		return -ENODEV;
 
-	lock_kernel();
+	mutex_lock(&d7s_mutex);
 	switch (cmd) {
 	case D7SIOCWR:
 		/* assign device register values we mask-out D7S_FLIP
@@ -149,8 +149,8 @@ static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 			regs |= D7S_FLIP;
 		writeb(regs, p->regs);
 		break;
-	};
-	unlock_kernel();
+	}
+	mutex_unlock(&d7s_mutex);
 
 	return error;
 }
@@ -161,6 +161,7 @@ static const struct file_operations d7s_fops = {
 	.compat_ioctl =		d7s_ioctl,
 	.open =			d7s_open,
 	.release =		d7s_release,
+	.llseek = noop_llseek,
 };
 
 static struct miscdevice d7s_miscdev = {
@@ -169,8 +170,7 @@ static struct miscdevice d7s_miscdev = {
 	.fops		= &d7s_fops
 };
 
-static int __devinit d7s_probe(struct of_device *op,
-			       const struct of_device_id *match)
+static int d7s_probe(struct platform_device *op)
 {
 	struct device_node *opts;
 	int err = -EINVAL;
@@ -215,7 +215,7 @@ static int __devinit d7s_probe(struct of_device *op,
 	writeb(regs,  p->regs);
 
 	printk(KERN_INFO PFX "7-Segment Display%s at [%s:0x%llx] %s\n",
-	       op->node->full_name,
+	       op->dev.of_node->full_name,
 	       (regs & D7S_FLIP) ? " (FLIPPED)" : "",
 	       op->resource[0].start,
 	       sol_compat ? "in sol_compat mode" : "");
@@ -235,7 +235,7 @@ out_free:
 	goto out;
 }
 
-static int __devexit d7s_remove(struct of_device *op)
+static int d7s_remove(struct platform_device *op)
 {
 	struct d7s *p = dev_get_drvdata(&op->dev);
 	u8 regs = readb(p->regs);
@@ -264,22 +264,14 @@ static const struct of_device_id d7s_match[] = {
 };
 MODULE_DEVICE_TABLE(of, d7s_match);
 
-static struct of_platform_driver d7s_driver = {
-	.name		= DRIVER_NAME,
-	.match_table	= d7s_match,
+static struct platform_driver d7s_driver = {
+	.driver = {
+		.name = DRIVER_NAME,
+		.owner = THIS_MODULE,
+		.of_match_table = d7s_match,
+	},
 	.probe		= d7s_probe,
-	.remove		= __devexit_p(d7s_remove),
+	.remove		= d7s_remove,
 };
 
-static int __init d7s_init(void)
-{
-	return of_register_driver(&d7s_driver, &of_bus_type);
-}
-
-static void __exit d7s_exit(void)
-{
-	of_unregister_driver(&d7s_driver);
-}
-
-module_init(d7s_init);
-module_exit(d7s_exit);
+module_platform_driver(d7s_driver);