kernel: move mtdsplit files to drivers/mtd/mtdsplit/ to simplify maintenance, unify...

[15.05/openwrt.git] / target / linux / generic / files / drivers / mtd / mtdsplit.c

diff --git a/target/linux/generic/files/drivers/mtd/mtdsplit.c b/target/linux/generic/files/drivers/mtd/mtdsplit.c
deleted file mode 100644 (file)
index 162739f..0000000
--- a/target/linux/generic/files/drivers/mtd/mtdsplit.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
- * Copyright (C) 2009-2013 Felix Fietkau <nbd@openwrt.org>
- * Copyright (C) 2009-2013 Gabor Juhos <juhosg@openwrt.org>
- * Copyright (C) 2012 Jonas Gorski <jogo@openwrt.org>
- * Copyright (C) 2013 Hauke Mehrtens <hauke@hauke-m.de>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
- *
- */
-
-#define pr_fmt(fmt)    "mtdsplit: " fmt
-
-#include <linux/export.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/magic.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/partitions.h>
-#include <linux/byteorder/generic.h>
-
-#include "mtdsplit.h"
-
-struct squashfs_super_block {
-       __le32 s_magic;
-       __le32 pad0[9];
-       __le64 bytes_used;
-};
-
-int mtd_get_squashfs_len(struct mtd_info *master,
-                        size_t offset,
-                        size_t *squashfs_len)
-{
-       struct squashfs_super_block sb;
-       size_t retlen;
-       int err;
-
-       err = mtd_read(master, offset, sizeof(sb), &retlen, (void *)&sb);
-       if (err || (retlen != sizeof(sb))) {
-               pr_alert("error occured while reading from \"%s\"\n",
-                        master->name);
-               return -EIO;
-       }
-
-       if (le32_to_cpu(sb.s_magic) != SQUASHFS_MAGIC) {
-               pr_alert("no squashfs found in \"%s\"\n", master->name);
-               return -EINVAL;
-       }
-
-       retlen = le64_to_cpu(sb.bytes_used);
-       if (retlen <= 0) {
-               pr_alert("squashfs is empty in \"%s\"\n", master->name);
-               return -ENODEV;
-       }
-
-       if (offset + retlen > master->size) {
-               pr_alert("squashfs has invalid size in \"%s\"\n",
-                        master->name);
-               return -EINVAL;
-       }
-
-       *squashfs_len = retlen;
-       return 0;
-}
-EXPORT_SYMBOL_GPL(mtd_get_squashfs_len);
-
-static ssize_t mtd_next_eb(struct mtd_info *mtd, size_t offset)
-{
-       return mtd_rounddown_to_eb(offset, mtd) + mtd->erasesize;
-}
-
-int mtd_check_rootfs_magic(struct mtd_info *mtd, size_t offset)
-{
-       u32 magic;
-       size_t retlen;
-       int ret;
-
-       ret = mtd_read(mtd, offset, sizeof(magic), &retlen,
-                      (unsigned char *) &magic);
-       if (ret)
-               return ret;
-
-       if (retlen != sizeof(magic))
-               return -EIO;
-
-       if (le32_to_cpu(magic) != SQUASHFS_MAGIC &&
-           magic != 0x19852003)
-               return -EINVAL;
-
-       return 0;
-}
-EXPORT_SYMBOL_GPL(mtd_check_rootfs_magic);
-
-int mtd_find_rootfs_from(struct mtd_info *mtd,
-                        size_t from,
-                        size_t limit,
-                        size_t *ret_offset)
-{
-       size_t offset;
-       int err;
-
-       for (offset = from; offset < limit;
-            offset = mtd_next_eb(mtd, offset)) {
-               err = mtd_check_rootfs_magic(mtd, offset);
-               if (err)
-                       continue;
-
-               *ret_offset = offset;
-               return 0;
-       }
-
-       return -ENODEV;
-}
-EXPORT_SYMBOL_GPL(mtd_find_rootfs_from);
-