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authorTodd Poynor <tpoynor@mvista.com>2005-06-30 01:23:27 +0100
committerThomas Gleixner <tglx@mtd.linutronix.de>2005-07-01 11:05:46 +0200
commit9bc7b38731dd1cc1635ab12f8de48866f603b06e (patch)
tree080932fb759f2f122ed81c88d15b336c025a2ff4 /drivers
parentbd7bcf52dabba9c391142fd515221fcb87b7c712 (diff)
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[MTD] mtdchar.c: Replace DEVFS by udev
Switch from DEVFS to udev for dynamic creation of device nodes for mtd char devices. Creates a new LDM class "mtd" with writeable and read-only devices registered for each mtdchar device. From: Paolo Galtieri <pgaltieri@mvista.com> Signed-off-by: Todd Poynor <tpoynor@mvista.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mtd/mtdchar.c52
1 files changed, 24 insertions, 28 deletions
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index da3f1a8f756..b606f811eeb 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -1,5 +1,5 @@
/*
- * $Id: mtdchar.c,v 1.70 2005/04/01 15:36:11 nico Exp $
+ * $Id: mtdchar.c,v 1.72 2005/06/30 00:23:24 tpoynor Exp $
*
* Character-device access to raw MTD devices.
*
@@ -15,27 +15,30 @@
#include <linux/fs.h>
#include <asm/uaccess.h>
-#ifdef CONFIG_DEVFS_FS
-#include <linux/devfs_fs_kernel.h>
+#include <linux/device.h>
+
+static struct class *mtd_class;
static void mtd_notify_add(struct mtd_info* mtd)
{
if (!mtd)
return;
- devfs_mk_cdev(MKDEV(MTD_CHAR_MAJOR, mtd->index*2),
- S_IFCHR | S_IRUGO | S_IWUGO, "mtd/%d", mtd->index);
-
- devfs_mk_cdev(MKDEV(MTD_CHAR_MAJOR, mtd->index*2+1),
- S_IFCHR | S_IRUGO, "mtd/%dro", mtd->index);
+ class_device_create(mtd_class, MKDEV(MTD_CHAR_MAJOR, mtd->index*2),
+ NULL, "mtd%d", mtd->index);
+
+ class_device_create(mtd_class,
+ MKDEV(MTD_CHAR_MAJOR, mtd->index*2+1),
+ NULL, "mtd%dro", mtd->index);
}
static void mtd_notify_remove(struct mtd_info* mtd)
{
if (!mtd)
return;
- devfs_remove("mtd/%d", mtd->index);
- devfs_remove("mtd/%dro", mtd->index);
+
+ class_device_destroy(mtd_class, MKDEV(MTD_CHAR_MAJOR, mtd->index*2));
+ class_device_destroy(mtd_class, MKDEV(MTD_CHAR_MAJOR, mtd->index*2+1));
}
static struct mtd_notifier notifier = {
@@ -43,22 +46,6 @@ static struct mtd_notifier notifier = {
.remove = mtd_notify_remove,
};
-static inline void mtdchar_devfs_init(void)
-{
- devfs_mk_dir("mtd");
- register_mtd_user(&notifier);
-}
-
-static inline void mtdchar_devfs_exit(void)
-{
- unregister_mtd_user(&notifier);
- devfs_remove("mtd");
-}
-#else /* !DEVFS */
-#define mtdchar_devfs_init() do { } while(0)
-#define mtdchar_devfs_exit() do { } while(0)
-#endif
-
/*
* We use file->private_data to store a pointer to the MTDdevice.
* Since alighment is at least 32 bits, we have 2 bits free for OTP
@@ -657,13 +644,22 @@ static int __init init_mtdchar(void)
return -EAGAIN;
}
- mtdchar_devfs_init();
+ mtd_class = class_create(THIS_MODULE, "mtd");
+
+ if (IS_ERR(mtd_class)) {
+ printk(KERN_ERR "Error creating mtd class.\n");
+ unregister_chrdev(MTD_CHAR_MAJOR, "mtd");
+ return 1;
+ }
+
+ register_mtd_user(&notifier);
return 0;
}
static void __exit cleanup_mtdchar(void)
{
- mtdchar_devfs_exit();
+ unregister_mtd_user(&notifier);
+ class_destroy(mtd_class);
unregister_chrdev(MTD_CHAR_MAJOR, "mtd");
}