diff options
Diffstat (limited to 'target/linux/generic-2.6/patches/000-reenable_devfs.patch')
| -rw-r--r-- | target/linux/generic-2.6/patches/000-reenable_devfs.patch | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/target/linux/generic-2.6/patches/000-reenable_devfs.patch b/target/linux/generic-2.6/patches/000-reenable_devfs.patch new file mode 100644 index 0000000000..ce98def5da --- /dev/null +++ b/target/linux/generic-2.6/patches/000-reenable_devfs.patch @@ -0,0 +1,219 @@ +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 |