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diff -ur linux-2.6.15-rc5/drivers/mtd/mtd_blkdevs.c linux-2.6.15-rc5-openwrt/drivers/mtd/mtd_blkdevs.c
--- linux-2.6.15-rc5/drivers/mtd/mtd_blkdevs.c 2005-12-04 06:10:42.000000000 +0100
+++ linux-2.6.15-rc5-openwrt/drivers/mtd/mtd_blkdevs.c 2005-12-15 07:53:20.000000000 +0100
@@ -21,6 +21,9 @@
#include <linux/init.h>
#include <asm/semaphore.h>
#include <asm/uaccess.h>
+#ifdef CONFIG_DEVFS_FS
+#include <linux/devfs_fs_kernel.h>
+#endif
static LIST_HEAD(blktrans_majors);
@@ -302,6 +305,11 @@
snprintf(gd->disk_name, sizeof(gd->disk_name),
"%s%d", tr->name, new->devnum);
+#ifdef CONFIG_DEVFS_FS
+ snprintf(gd->devfs_name, sizeof(gd->devfs_name),
+ "%s/%c", tr->name, (tr->part_bits?'a':'0') + new->devnum);
+#endif
+
/* 2.5 has capacity in units of 512 bytes while still
having BLOCK_SIZE_BITS set to 10. Just to keep us amused. */
set_capacity(gd, (new->size * new->blksize) >> 9);
@@ -418,6 +426,10 @@
return ret;
}
+#ifdef CONFIG_DEVFS_FS
+ devfs_mk_dir(tr->name);
+#endif
+
INIT_LIST_HEAD(&tr->devs);
list_add(&tr->list, &blktrans_majors);
@@ -450,6 +462,10 @@
tr->remove_dev(dev);
}
+#ifdef CONFIG_DEVFS_FS
+ devfs_remove(tr->name);
+#endif
+
blk_cleanup_queue(tr->blkcore_priv->rq);
unregister_blkdev(tr->major, tr->name);
diff -ur linux-2.6.15-rc5/drivers/mtd/mtdchar.c linux-2.6.15-rc5-openwrt/drivers/mtd/mtdchar.c
--- linux-2.6.15-rc5/drivers/mtd/mtdchar.c 2005-12-04 06:10:42.000000000 +0100
+++ linux-2.6.15-rc5-openwrt/drivers/mtd/mtdchar.c 2005-12-15 07:49:15.000000000 +0100
@@ -6,7 +6,6 @@
*/
#include <linux/config.h>
-#include <linux/device.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/kernel.h>
@@ -19,19 +18,33 @@
#include <asm/uaccess.h>
+#ifdef CONFIG_DEVFS_FS
+#include <linux/devfs_fs_kernel.h>
+#else
+#include <linux/device.h>
+
static struct class *mtd_class;
+#endif
static void mtd_notify_add(struct mtd_info* mtd)
{
if (!mtd)
return;
+#ifdef CONFIG_DEVFS_FS
+ 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);
+#else
class_device_create(mtd_class, NULL, MKDEV(MTD_CHAR_MAJOR, mtd->index*2),
NULL, "mtd%d", mtd->index);
class_device_create(mtd_class, NULL,
MKDEV(MTD_CHAR_MAJOR, mtd->index*2+1),
NULL, "mtd%dro", mtd->index);
+#endif
}
static void mtd_notify_remove(struct mtd_info* mtd)
@@ -39,8 +52,13 @@
if (!mtd)
return;
+#ifdef CONFIG_DEVFS_FS
+ devfs_remove("mtd/%d", mtd->index);
+ devfs_remove("mtd/%dro", mtd->index);
+#else
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));
+#endif
}
static struct mtd_notifier notifier = {
@@ -48,6 +66,22 @@
.remove = mtd_notify_remove,
};
+#ifdef CONFIG_DEVFS_FS
+ static inline void mtdchar_devfs_init(void)
+ {
+ devfs_mk_dir("mtd");
+ register_mtd_user(¬ifier);
+ }
+ static inline void mtdchar_devfs_exit(void)
+ {
+ unregister_mtd_user(¬ifier);
+ 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
@@ -643,6 +677,9 @@
return -EAGAIN;
}
+#ifdef CONFIG_DEVFS_FS
+ mtdchar_devfs_init();
+#else
mtd_class = class_create(THIS_MODULE, "mtd");
if (IS_ERR(mtd_class)) {
@@ -652,13 +689,19 @@
}
register_mtd_user(¬ifier);
+#endif
return 0;
}
static void __exit cleanup_mtdchar(void)
{
+
+#ifdef CONFIG_DEVFS_FS
+ mtdchar_devfs_exit();
+#else
unregister_mtd_user(¬ifier);
class_destroy(mtd_class);
+#endif
unregister_chrdev(MTD_CHAR_MAJOR, "mtd");
}
diff -ur linux-2.6.15-rc5/fs/Kconfig linux-2.6.15-rc5-openwrt/fs/Kconfig
--- linux-2.6.15-rc5/fs/Kconfig 2005-12-04 06:10:42.000000000 +0100
+++ linux-2.6.15-rc5-openwrt/fs/Kconfig 2005-12-15 07:44:01.000000000 +0100
@@ -772,6 +772,56 @@
help
Exports the dump image of crashed kernel in ELF format.
+config DEVFS_FS
+ bool "/dev file system support (OBSOLETE)"
+ depends on EXPERIMENTAL
+ help
+ This is support for devfs, a virtual file system (like /proc) which
+ provides the file system interface to device drivers, normally found
+ in /dev. Devfs does not depend on major and minor number
+ allocations. Device drivers register entries in /dev which then
+ appear automatically, which means that the system administrator does
+ not have to create character and block special device files in the
+ /dev directory using the mknod command (or MAKEDEV script) anymore.
+
+ This is work in progress. If you want to use this, you *must* read
+ the material in <file:Documentation/filesystems/devfs/>, especially
+ the file README there.
+
+ Note that devfs no longer manages /dev/pts! If you are using UNIX98
+ ptys, you will also need to mount the /dev/pts filesystem (devpts).
+
+ Note that devfs has been obsoleted by udev,
+ <http://www.kernel.org/pub/linux/utils/kernel/hotplug/>.
+ It has been stripped down to a bare minimum and is only provided for
+ legacy installations that use its naming scheme which is
+ unfortunately different from the names normal Linux installations
+ use.
+
+ If unsure, say N.
+
+config DEVFS_MOUNT
+ bool "Automatically mount at boot"
+ depends on DEVFS_FS
+ help
+ This option appears if you have CONFIG_DEVFS_FS enabled. Setting
+ this to 'Y' will make the kernel automatically mount devfs onto /dev
+ when the system is booted, before the init thread is started.
+ You can override this with the "devfs=nomount" boot option.
+
+ If unsure, say N.
+
+config DEVFS_DEBUG
+ bool "Debug devfs"
+ depends on DEVFS_FS
+ help
+ If you say Y here, then the /dev file system code will generate
+ debugging messages. See the file
+ <file:Documentation/filesystems/devfs/boot-options> for more
+ details.
+
+ If unsure, say N.
+
config SYSFS
bool "sysfs file system support" if EMBEDDED
default y
|
