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authorFelix Fietkau <nbd@openwrt.org>2007-03-02 01:23:36 +0000
committerFelix Fietkau <nbd@openwrt.org>2007-03-02 01:23:36 +0000
commit68ca8e7818356c0dbf2e0400b177139a656791c0 (patch)
treee8147a0b512f9bf0e42a6ac3f1a693b09c7c1971 /target/linux/generic-2.6/patches/065-block2mtd_init.patch
parenta256c81dd99148e289dc7a73c01b9108701ad9d3 (diff)
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make squashfs overlay support more generic and integrate it for x86-2.6
SVN-Revision: 6450
Diffstat (limited to 'target/linux/generic-2.6/patches/065-block2mtd_init.patch')
-rw-r--r--target/linux/generic-2.6/patches/065-block2mtd_init.patch112
1 files changed, 112 insertions, 0 deletions
diff --git a/target/linux/generic-2.6/patches/065-block2mtd_init.patch b/target/linux/generic-2.6/patches/065-block2mtd_init.patch
new file mode 100644
index 0000000000..ef483bedd1
--- /dev/null
+++ b/target/linux/generic-2.6/patches/065-block2mtd_init.patch
@@ -0,0 +1,112 @@
+--- linux.old/drivers/mtd/devices/block2mtd.c 2007-03-02 01:00:13.866987272 +0100
++++ linux.dev/drivers/mtd/devices/block2mtd.c 2007-03-02 02:03:45.558522080 +0100
+@@ -16,6 +16,7 @@
+ #include <linux/list.h>
+ #include <linux/init.h>
+ #include <linux/mtd/mtd.h>
++#include <linux/mtd/partitions.h>
+ #include <linux/buffer_head.h>
+ #include <linux/mutex.h>
+ #include <linux/mount.h>
+@@ -287,10 +288,11 @@
+
+
+ /* FIXME: ensure that mtd->size % erase_size == 0 */
+-static struct block2mtd_dev *add_device(char *devname, int erase_size)
++static struct block2mtd_dev *add_device(char *devname, int erase_size, char *mtdname)
+ {
+ struct block_device *bdev;
+ struct block2mtd_dev *dev;
++ struct mtd_partition *part;
+
+ if (!devname)
+ return NULL;
+@@ -330,14 +332,18 @@
+
+ /* Setup the MTD structure */
+ /* make the name contain the block device in */
+- dev->mtd.name = kmalloc(sizeof("block2mtd: ") + strlen(devname),
+- GFP_KERNEL);
++
++ if (!mtdname)
++ mtdname = devname;
++
++ dev->mtd.name = kmalloc(strlen(mtdname), GFP_KERNEL);
++
+ if (!dev->mtd.name)
+ goto devinit_err;
++
++ strcpy(dev->mtd.name, mtdname);
+
+- sprintf(dev->mtd.name, "block2mtd: %s", devname);
+-
+- dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK;
++ dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK & ~(erase_size - 1);
+ dev->mtd.erasesize = erase_size;
+ dev->mtd.writesize = 1;
+ dev->mtd.type = MTD_RAM;
+@@ -349,15 +355,18 @@
+ dev->mtd.read = block2mtd_read;
+ dev->mtd.priv = dev;
+ dev->mtd.owner = THIS_MODULE;
+-
+- if (add_mtd_device(&dev->mtd)) {
++
++ part = kzalloc(sizeof(struct mtd_partition), GFP_KERNEL);
++ part->name = dev->mtd.name;
++ part->offset = 0;
++ part->size = dev->mtd.size;
++ if (add_mtd_partitions(&dev->mtd, part, 1)) {
+ /* Device didnt get added, so free the entry */
+ goto devinit_err;
+ }
+ list_add(&dev->list, &blkmtd_device_list);
+ INFO("mtd%d: [%s] erase_size = %dKiB [%d]", dev->mtd.index,
+- dev->mtd.name + strlen("blkmtd: "),
+- dev->mtd.erasesize >> 10, dev->mtd.erasesize);
++ mtdname, dev->mtd.erasesize >> 10, dev->mtd.erasesize);
+ return dev;
+
+ devinit_err:
+@@ -430,9 +439,9 @@
+
+ static int block2mtd_setup2(const char *val)
+ {
+- char buf[80 + 12]; /* 80 for device, 12 for erase size */
++ char buf[80 + 12 + 80]; /* 80 for device, 12 for erase size, 80 for name */
+ char *str = buf;
+- char *token[2];
++ char *token[3];
+ char *name;
+ size_t erase_size = PAGE_SIZE;
+ int i, ret;
+@@ -443,7 +452,7 @@
+ strcpy(str, val);
+ kill_final_newline(str);
+
+- for (i = 0; i < 2; i++)
++ for (i = 0; i < 3; i++)
+ token[i] = strsep(&str, ",");
+
+ if (str)
+@@ -463,8 +472,10 @@
+ parse_err("illegal erase size");
+ }
+ }
++ if (token[2] && (strlen(token[2]) + 1 > 80))
++ parse_err("mtd device name too long");
+
+- add_device(name, erase_size);
++ add_device(name, erase_size, token[2]);
+
+ return 0;
+ }
+@@ -498,7 +509,7 @@
+
+
+ module_param_call(block2mtd, block2mtd_setup, NULL, NULL, 0200);
+-MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>]\"");
++MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>[,<name>]]\"");
+
+ static int __init block2mtd_init(void)
+ {