Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/mtd/mtdblock_ro.c b/drivers/mtd/mtdblock_ro.c
new file mode 100644
index 0000000..0c830ba
--- /dev/null
+++ b/drivers/mtd/mtdblock_ro.c
@@ -0,0 +1,87 @@
+/*
+ * $Id: mtdblock_ro.c,v 1.19 2004/11/16 18:28:59 dwmw2 Exp $
+ *
+ * (C) 2003 David Woodhouse <dwmw2@infradead.org>
+ *
+ * Simple read-only (writable only for RAM) mtdblock driver
+ */
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/blktrans.h>
+
+static int mtdblock_readsect(struct mtd_blktrans_dev *dev,
+ unsigned long block, char *buf)
+{
+ size_t retlen;
+
+ if (dev->mtd->read(dev->mtd, (block * 512), 512, &retlen, buf))
+ return 1;
+ return 0;
+}
+
+static int mtdblock_writesect(struct mtd_blktrans_dev *dev,
+ unsigned long block, char *buf)
+{
+ size_t retlen;
+
+ if (dev->mtd->write(dev->mtd, (block * 512), 512, &retlen, buf))
+ return 1;
+ return 0;
+}
+
+static void mtdblock_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
+{
+ struct mtd_blktrans_dev *dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+
+ if (!dev)
+ return;
+
+ memset(dev, 0, sizeof(*dev));
+
+ dev->mtd = mtd;
+ dev->devnum = mtd->index;
+ dev->blksize = 512;
+ dev->size = mtd->size >> 9;
+ dev->tr = tr;
+ if ((mtd->flags & (MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEABLE)) !=
+ (MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEABLE))
+ dev->readonly = 1;
+
+ add_mtd_blktrans_dev(dev);
+}
+
+static void mtdblock_remove_dev(struct mtd_blktrans_dev *dev)
+{
+ del_mtd_blktrans_dev(dev);
+ kfree(dev);
+}
+
+static struct mtd_blktrans_ops mtdblock_tr = {
+ .name = "mtdblock",
+ .major = 31,
+ .part_bits = 0,
+ .readsect = mtdblock_readsect,
+ .writesect = mtdblock_writesect,
+ .add_mtd = mtdblock_add_mtd,
+ .remove_dev = mtdblock_remove_dev,
+ .owner = THIS_MODULE,
+};
+
+static int __init mtdblock_init(void)
+{
+ return register_mtd_blktrans(&mtdblock_tr);
+}
+
+static void __exit mtdblock_exit(void)
+{
+ deregister_mtd_blktrans(&mtdblock_tr);
+}
+
+module_init(mtdblock_init);
+module_exit(mtdblock_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
+MODULE_DESCRIPTION("Simple read-only block device emulation access to MTD devices");