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70 lines
1.7 KiB
70 lines
1.7 KiB
11 years ago
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--- a/drivers/mtd/mtdpart.c
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+++ b/drivers/mtd/mtdpart.c
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@@ -33,6 +33,7 @@
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#include <linux/err.h>
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#include "mtdcore.h"
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+#include "mtdsplit.h"
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/* Our partition linked list */
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static LIST_HEAD(mtd_partitions);
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@@ -669,43 +670,16 @@ mtd_pad_erasesize(struct mtd_info *mtd,
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return len;
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}
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-#define ROOTFS_SPLIT_NAME "rootfs_data"
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-
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-struct squashfs_super_block {
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- __le32 s_magic;
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- __le32 pad0[9];
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- __le64 bytes_used;
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-};
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-
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-
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static int split_squashfs(struct mtd_info *master, int offset, int *split_offset)
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{
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- struct squashfs_super_block sb;
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+ size_t squashfs_len;
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int len, ret;
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- ret = mtd_read(master, offset, sizeof(sb), &len, (void *) &sb);
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- if (ret || (len != sizeof(sb))) {
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- printk(KERN_ALERT "split_squashfs: error occured while reading "
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- "from \"%s\"\n", master->name);
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- return -EINVAL;
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- }
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-
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- if (SQUASHFS_MAGIC != le32_to_cpu(sb.s_magic) ) {
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- printk(KERN_ALERT "split_squashfs: no squashfs found in \"%s\"\n",
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- master->name);
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- *split_offset = 0;
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- return 0;
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- }
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-
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- if (le64_to_cpu((sb.bytes_used)) <= 0) {
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- printk(KERN_ALERT "split_squashfs: squashfs is empty in \"%s\"\n",
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- master->name);
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- *split_offset = 0;
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- return 0;
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- }
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+ ret = mtd_get_squashfs_len(master, offset, &squashfs_len);
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+ if (ret)
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+ return ret;
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- len = (u32) le64_to_cpu(sb.bytes_used);
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- len = mtd_pad_erasesize(master, offset, len);
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+ len = mtd_pad_erasesize(master, offset, squashfs_len);
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*split_offset = offset + len;
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return 0;
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--- a/drivers/mtd/Kconfig
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+++ b/drivers/mtd/Kconfig
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@@ -20,6 +20,7 @@ config MTD_ROOTFS_ROOT_DEV
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config MTD_ROOTFS_SPLIT
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bool "Automatically split 'rootfs' partition for squashfs"
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+ select MTD_SPLIT
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default y
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config MTD_SPLIT_FIRMWARE
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