1 files changed, 13 insertions, 25 deletions

diff --git a/drivers/sbus/char/flash.c b/drivers/sbus/char/flash.c
index 368d66294d8..25c738e9ef1 100644
--- a/drivers/sbus/char/flash.c
+++ b/drivers/sbus/char/flash.c
@@ -9,19 +9,18 @@
 #include <linux/miscdevice.h>
 #include <linux/fcntl.h>
 #include <linux/poll.h>
-#include <linux/init.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/spinlock.h>
 #include <linux/mm.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
 
-#include <asm/system.h>
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
 #include <asm/io.h>
 #include <asm/upa.h>
 
+static DEFINE_MUTEX(flash_mutex);
 static DEFINE_SPINLOCK(flash_lock);
 static struct {
 	unsigned long read_base;	/* Physical read address */
@@ -80,7 +79,7 @@ flash_mmap(struct file *file, struct vm_area_struct *vma)
 static long long
 flash_llseek(struct file *file, long long offset, int origin)
 {
-	lock_kernel();
+	mutex_lock(&flash_mutex);
 	switch (origin) {
 		case 0:
 			file->f_pos = offset;
@@ -94,10 +93,10 @@ flash_llseek(struct file *file, long long offset, int origin)
 			file->f_pos = flash.read_size;
 			break;
 		default:
-			unlock_kernel();
+			mutex_unlock(&flash_mutex);
 			return -EINVAL;
 	}
-	unlock_kernel();
+	mutex_unlock(&flash_mutex);
 	return file->f_pos;
 }
 
@@ -125,13 +124,13 @@ flash_read(struct file * file, char __user * buf,
 static int
 flash_open(struct inode *inode, struct file *file)
 {
-	lock_kernel();
+	mutex_lock(&flash_mutex);
 	if (test_and_set_bit(0, (void *)&flash.busy) != 0) {
-		unlock_kernel();
+		mutex_unlock(&flash_mutex);
 		return -EBUSY;
 	}
 
-	unlock_kernel();
+	mutex_unlock(&flash_mutex);
 	return 0;
 }
 
@@ -159,8 +158,7 @@ static const struct file_operations flash_fops = {
 
 static struct miscdevice flash_dev = { FLASH_MINOR, "flash", &flash_fops };
 
-static int __devinit flash_probe(struct of_device *op,
-				 const struct of_device_id *match)
+static int flash_probe(struct platform_device *op)
 {
 	struct device_node *dp = op->dev.of_node;
 	struct device_node *parent;
@@ -191,7 +189,7 @@ static int __devinit flash_probe(struct of_device *op,
 	return misc_register(&flash_dev);
 }
 
-static int __devexit flash_remove(struct of_device *op)
+static int flash_remove(struct platform_device *op)
 {
 	misc_deregister(&flash_dev);
 
@@ -206,26 +204,16 @@ static const struct of_device_id flash_match[] = {
 };
 MODULE_DEVICE_TABLE(of, flash_match);
 
-static struct of_platform_driver flash_driver = {
+static struct platform_driver flash_driver = {
 	.driver = {
 		.name = "flash",
 		.owner = THIS_MODULE,
 		.of_match_table = flash_match,
 	},
 	.probe		= flash_probe,
-	.remove		= __devexit_p(flash_remove),
+	.remove		= flash_remove,
 };
 
-static int __init flash_init(void)
-{
-	return of_register_driver(&flash_driver, &of_bus_type);
-}
-
-static void __exit flash_cleanup(void)
-{
-	of_unregister_driver(&flash_driver);
-}
+module_platform_driver(flash_driver);
 
-module_init(flash_init);
-module_exit(flash_cleanup);
 MODULE_LICENSE("GPL");