[JFFS2] Teach JFFS2 about Sibley flash

Intels Sibley flash needs JFFS2 write buffer functionality

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 21 insertions, 1 deletions

diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index 251ac3d86f99..8c06d3a2b17d 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -9,7 +9,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: wbuf.c,v 1.96 2005/07/22 10:32:08 dedekind Exp $
+ * $Id: wbuf.c,v 1.97 2005/08/06 04:51:30 nico Exp $
  *
  */
 
@@ -1235,3 +1235,23 @@ int jffs2_nor_ecc_flash_setup(struct jffs2_sb_info *c) {
 void jffs2_nor_ecc_flash_cleanup(struct jffs2_sb_info *c) {
         kfree(c->wbuf);
 }
+
+int jffs2_nor_wbuf_flash_setup(struct jffs2_sb_info *c) {
+        /* Cleanmarker currently occupies a whole programming region */
+        c->cleanmarker_size = MTD_PROGREGION_SIZE(c->mtd);
+
+        /* Initialize write buffer */
+        init_rwsem(&c->wbuf_sem);
+        c->wbuf_pagesize = MTD_PROGREGION_SIZE(c->mtd);
+        c->wbuf_ofs = 0xFFFFFFFF;
+
+        c->wbuf = kmalloc(c->wbuf_pagesize, GFP_KERNEL);
+        if (!c->wbuf)
+                return -ENOMEM;
+
+        return 0;
+}
+
+void jffs2_nor_wbuf_flash_cleanup(struct jffs2_sb_info *c) {
+        kfree(c->wbuf);
+}