linux/2.6.37: R.I.P.

SVN-Revision: 31687

1 files changed, 0 insertions, 292 deletions

diff --git a/target/linux/generic/patches-2.6.37/441-block2mtd_refresh.patch b/target/linux/generic/patches-2.6.37/441-block2mtd_refresh.patch
deleted file mode 100644
index a1a8463..0000000
--- a/target/linux/generic/patches-2.6.37/441-block2mtd_refresh.patch
+++ /dev/null
@@ -1,292 +0,0 @@
---- a/drivers/mtd/devices/block2mtd.c
-+++ b/drivers/mtd/devices/block2mtd.c
-@@ -30,6 +30,8 @@ struct block2mtd_dev {
- 	struct block_device *blkdev;
- 	struct mtd_info mtd;
- 	struct mutex write_mutex;
-+	rwlock_t bdev_mutex;
-+	char devname[0];
- };
- 
- 
-@@ -82,6 +84,12 @@ static int block2mtd_erase(struct mtd_in
- 	size_t len = instr->len;
- 	int err;
- 
-+	read_lock(&dev->bdev_mutex);
-+	if (!dev->blkdev) {
-+		err = -EINVAL;
-+		goto done;
-+	}
-+
- 	instr->state = MTD_ERASING;
- 	mutex_lock(&dev->write_mutex);
- 	err = _block2mtd_erase(dev, from, len);
-@@ -93,6 +101,10 @@ static int block2mtd_erase(struct mtd_in
- 		instr->state = MTD_ERASE_DONE;
- 
- 	mtd_erase_callback(instr);
-+
-+done:
-+	read_unlock(&dev->bdev_mutex);
-+
- 	return err;
- }
- 
-@@ -104,10 +116,14 @@ static int block2mtd_read(struct mtd_inf
- 	struct page *page;
- 	int index = from >> PAGE_SHIFT;
- 	int offset = from & (PAGE_SIZE-1);
--	int cpylen;
-+	int cpylen, err = 0;
-+
-+	read_lock(&dev->bdev_mutex);
-+	if (!dev->blkdev || (from > mtd->size)) {
-+		err = -EINVAL;
-+		goto done;
-+	}
- 
--	if (from > mtd->size)
--		return -EINVAL;
- 	if (from + len > mtd->size)
- 		len = mtd->size - from;
- 
-@@ -122,10 +138,14 @@ static int block2mtd_read(struct mtd_inf
- 		len = len - cpylen;
- 
- 		page = page_read(dev->blkdev->bd_inode->i_mapping, index);
--		if (!page)
--			return -ENOMEM;
--		if (IS_ERR(page))
--			return PTR_ERR(page);
-+		if (!page) {
-+			err = -ENOMEM;
-+			goto done;
-+		}
-+		if (IS_ERR(page)) {
-+			err = PTR_ERR(page);
-+			goto done;
-+		}
- 
- 		memcpy(buf, page_address(page) + offset, cpylen);
- 		page_cache_release(page);
-@@ -136,7 +156,10 @@ static int block2mtd_read(struct mtd_inf
- 		offset = 0;
- 		index++;
- 	}
--	return 0;
-+
-+done:
-+	read_unlock(&dev->bdev_mutex);
-+	return err;
- }
- 
- 
-@@ -188,12 +211,22 @@ static int block2mtd_write(struct mtd_in
- 		size_t *retlen, const u_char *buf)
- {
- 	struct block2mtd_dev *dev = mtd->priv;
--	int err;
-+	int err = 0;
-+
-+	read_lock(&dev->bdev_mutex);
-+	if (!dev->blkdev) {
-+		err = -EINVAL;
-+		goto done;
-+	}
- 
- 	if (!len)
--		return 0;
--	if (to >= mtd->size)
--		return -ENOSPC;
-+		goto done;
-+
-+	if (to >= mtd->size) {
-+		err = -ENOSPC;
-+		goto done;
-+	}
-+
- 	if (to + len > mtd->size)
- 		len = mtd->size - to;
- 
-@@ -202,6 +235,9 @@ static int block2mtd_write(struct mtd_in
- 	mutex_unlock(&dev->write_mutex);
- 	if (err > 0)
- 		err = 0;
-+
-+done:
-+	read_unlock(&dev->bdev_mutex);
- 	return err;
- }
- 
-@@ -210,52 +246,29 @@ static int block2mtd_write(struct mtd_in
- static void block2mtd_sync(struct mtd_info *mtd)
- {
- 	struct block2mtd_dev *dev = mtd->priv;
--	sync_blockdev(dev->blkdev);
--	return;
--}
--
--
--static void block2mtd_free_device(struct block2mtd_dev *dev)
--{
--	if (!dev)
--		return;
--
--	kfree(dev->mtd.name);
- 
--	if (dev->blkdev) {
--		invalidate_mapping_pages(dev->blkdev->bd_inode->i_mapping,
--					0, -1);
--		close_bdev_exclusive(dev->blkdev, FMODE_READ|FMODE_WRITE);
--	}
-+	read_lock(&dev->bdev_mutex);
-+	if (dev->blkdev)
-+		sync_blockdev(dev->blkdev);
-+	read_unlock(&dev->bdev_mutex);
- 
--	kfree(dev);
-+	return;
- }
- 
- 
--/* FIXME: ensure that mtd->size % erase_size == 0 */
--static struct block2mtd_dev *add_device(char *devname, int erase_size, const char *mtdname)
-+static int _open_bdev(struct block2mtd_dev *dev)
- {
- 	struct block_device *bdev;
--	struct block2mtd_dev *dev;
--	struct mtd_partition *part;
--	char *name;
--
--	if (!devname)
--		return NULL;
--
--	dev = kzalloc(sizeof(struct block2mtd_dev), GFP_KERNEL);
--	if (!dev)
--		return NULL;
- 
- 	/* Get a handle on the device */
--	bdev = open_bdev_exclusive(devname, FMODE_READ|FMODE_WRITE, NULL);
-+	bdev = open_bdev_exclusive(dev->devname, FMODE_READ|FMODE_WRITE, NULL);
- #ifndef MODULE
- 	if (IS_ERR(bdev)) {
- 
- 		/* We might not have rootfs mounted at this point. Try
- 		   to resolve the device name by other means. */
- 
--		dev_t devt = name_to_dev_t(devname);
-+		dev_t devt = name_to_dev_t(dev->devname);
- 		if (devt) {
- 			bdev = open_by_devnum(devt, FMODE_WRITE | FMODE_READ);
- 		}
-@@ -263,17 +276,98 @@ static struct block2mtd_dev *add_device(
- #endif
- 
- 	if (IS_ERR(bdev)) {
--		ERROR("error: cannot open device %s", devname);
--		goto devinit_err;
-+		ERROR("error: cannot open device %s", dev->devname);
-+		return 1;
- 	}
- 	dev->blkdev = bdev;
- 
- 	if (MAJOR(bdev->bd_dev) == MTD_BLOCK_MAJOR) {
- 		ERROR("attempting to use an MTD device as a block device");
--		goto devinit_err;
-+		return 1;
- 	}
- 
-+	return 0;
-+}
-+
-+static void _close_bdev(struct block2mtd_dev *dev)
-+{
-+	struct block_device *bdev;
-+
-+	if (!dev->blkdev)
-+		return;
-+
-+	bdev = dev->blkdev;
-+	invalidate_mapping_pages(dev->blkdev->bd_inode->i_mapping, 0, -1);
-+	close_bdev_exclusive(dev->blkdev, FMODE_READ|FMODE_WRITE);
-+	dev->blkdev = NULL;
-+}
-+
-+static void block2mtd_free_device(struct block2mtd_dev *dev)
-+{
-+	if (!dev)
-+		return;
-+
-+	kfree(dev->mtd.name);
-+	_close_bdev(dev);
-+	kfree(dev);
-+}
-+
-+
-+static int block2mtd_refresh(struct mtd_info *mtd)
-+{
-+	struct block2mtd_dev *dev = mtd->priv;
-+	struct block_device *bdev;
-+	dev_t devt;
-+	int err = 0;
-+
-+	/* no other mtd function can run at this point */
-+	write_lock(&dev->bdev_mutex);
-+
-+	/* get the device number for the whole disk */
-+	devt = MKDEV(MAJOR(dev->blkdev->bd_dev), 0);
-+
-+	/* close the old block device */
-+	_close_bdev(dev);
-+
-+	/* open the whole disk, issue a partition rescan, then */
-+	bdev = open_by_devnum(devt, FMODE_WRITE | FMODE_READ);
-+	if (!bdev || !bdev->bd_disk)
-+		err = -EINVAL;
-+#ifndef CONFIG_MTD_BLOCK2MTD_MODULE
-+	else
-+		err = rescan_partitions(bdev->bd_disk, bdev);
-+#endif
-+	if (bdev)
-+		close_bdev_exclusive(bdev, FMODE_READ|FMODE_WRITE);
-+
-+	/* try to open the partition block device again */
-+	_open_bdev(dev);
-+	write_unlock(&dev->bdev_mutex);
-+
-+	return err;
-+}
-+
-+/* FIXME: ensure that mtd->size % erase_size == 0 */
-+static struct block2mtd_dev *add_device(char *devname, int erase_size, char *mtdname)
-+{
-+	struct block2mtd_dev *dev;
-+	struct mtd_partition *part;
-+	char *name;
-+
-+	if (!devname)
-+		return NULL;
-+
-+	dev = kzalloc(sizeof(struct block2mtd_dev) + strlen(devname) + 1, GFP_KERNEL);
-+	if (!dev)
-+		return NULL;
-+
-+	strcpy(dev->devname, devname);
-+
-+	if (_open_bdev(dev))
-+		goto devinit_err;
-+
- 	mutex_init(&dev->write_mutex);
-+	rwlock_init(&dev->bdev_mutex);
- 
- 	/* Setup the MTD structure */
- 	/* make the name contain the block device in */
-@@ -298,6 +392,7 @@ static struct block2mtd_dev *add_device(
- 	dev->mtd.read = block2mtd_read;
- 	dev->mtd.priv = dev;
- 	dev->mtd.owner = THIS_MODULE;
-+	dev->mtd.refresh_device = block2mtd_refresh;
- 
- 	part = kzalloc(sizeof(struct mtd_partition), GFP_KERNEL);
- 	part->name = dev->mtd.name;