diff --git a/target/linux/generic/patches-3.3/508-yaffs-3.3-use-mtd_-helpers.patch b/target/linux/generic/patches-3.3/508-yaffs-3.3-use-mtd_-helpers.patch
new file mode 100644
index 0000000000000000000000000000000000000000..65d45a0be1c3ae6e71053b6c6924d0ac9c9e6566
--- /dev/null
+++ b/target/linux/generic/patches-3.3/508-yaffs-3.3-use-mtd_-helpers.patch
@@ -0,0 +1,160 @@
+--- a/fs/yaffs2/yaffs_mtdif1.c
++++ b/fs/yaffs2/yaffs_mtdif1.c
+@@ -133,7 +133,7 @@ int nandmtd1_WriteChunkWithTagsToNAND(ya
+ ops.datbuf = (__u8 *)data;
+ ops.oobbuf = (__u8 *)&pt1;
+
+- retval = mtd->write_oob(mtd, addr, &ops);
++ retval = mtd_write_oob(mtd, addr, &ops);
+ if (retval) {
+ T(YAFFS_TRACE_MTD,
+ (TSTR("write_oob failed, chunk %d, mtd error %d"TENDSTR),
+@@ -194,7 +194,7 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y
+ /* Read page and oob using MTD.
+ * Check status and determine ECC result.
+ */
+- retval = mtd->read_oob(mtd, addr, &ops);
++ retval = mtd_read_oob(mtd, addr, &ops);
+ if (retval) {
+ T(YAFFS_TRACE_MTD,
+ (TSTR("read_oob failed, chunk %d, mtd error %d"TENDSTR),
+@@ -218,7 +218,7 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y
+ /* fall into... */
+ default:
+ rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0);
+- etags->block_bad = (mtd->block_isbad)(mtd, addr);
++ etags->block_bad = mtd_block_isbad(mtd, addr);
+ return YAFFS_FAIL;
+ }
+
+@@ -286,7 +286,7 @@ int nandmtd1_MarkNANDBlockBad(struct yaf
+
+ T(YAFFS_TRACE_BAD_BLOCKS,(TSTR("marking block %d bad"TENDSTR), block_no));
+
+- retval = mtd->block_markbad(mtd, (loff_t)blocksize * block_no);
++ retval = mtd_block_markbad(mtd, (loff_t)blocksize * block_no);
+ return (retval) ? YAFFS_FAIL : YAFFS_OK;
+ }
+
+@@ -336,7 +336,7 @@ int nandmtd1_QueryNANDBlock(struct yaffs
+ return YAFFS_FAIL;
+
+ retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags);
+- etags.block_bad = (mtd->block_isbad)(mtd, addr);
++ etags.block_bad = mtd_block_isbad(mtd, addr);
+ if (etags.block_bad) {
+ T(YAFFS_TRACE_BAD_BLOCKS,
+ (TSTR("block %d is marked bad"TENDSTR), block_no));
+--- a/fs/yaffs2/yaffs_vfs_glue.c
++++ b/fs/yaffs2/yaffs_vfs_glue.c
+@@ -2607,8 +2607,8 @@ static void yaffs_MTDPutSuper(struct sup
+ {
+ struct mtd_info *mtd = yaffs_dev_to_mtd(yaffs_SuperToDevice(sb));
+
+- if (mtd->sync)
+- mtd->sync(mtd);
++ if (mtd)
++ mtd_sync(mtd);
+
+ put_mtd_device(mtd);
+ }
+--- a/fs/yaffs2/yaffs_mtdif2.c
++++ b/fs/yaffs2/yaffs_mtdif2.c
+@@ -77,7 +77,7 @@ int nandmtd2_WriteChunkWithTagsToNAND(ya
+ ops.ooboffs = 0;
+ ops.datbuf = (__u8 *)data;
+ ops.oobbuf = (dev->param.inband_tags) ? NULL : packed_tags_ptr;
+- retval = mtd->write_oob(mtd, addr, &ops);
++ retval = mtd_write_oob(mtd, addr, &ops);
+
+ #else
+ if (!dev->param.inband_tags) {
+@@ -133,7 +133,7 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y
+
+ #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+ if (dev->param.inband_tags || (data && !tags))
+- retval = mtd->read(mtd, addr, dev->param.total_bytes_per_chunk,
++ retval = mtd_read(mtd, addr, dev->param.total_bytes_per_chunk,
+ &dummy, data);
+ else if (tags) {
+ ops.mode = MTD_OPS_AUTO_OOB;
+@@ -142,7 +142,7 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y
+ ops.ooboffs = 0;
+ ops.datbuf = data;
+ ops.oobbuf = yaffs_dev_to_lc(dev)->spareBuffer;
+- retval = mtd->read_oob(mtd, addr, &ops);
++ retval = mtd_read_oob(mtd, addr, &ops);
+ }
+ #else
+ if (!dev->param.inband_tags && data && tags) {
+@@ -201,7 +201,7 @@ int nandmtd2_MarkNANDBlockBad(struct yaf
+ (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), block_no));
+
+ retval =
+- mtd->block_markbad(mtd,
++ mtd_block_markbad(mtd,
+ block_no * dev->param.chunks_per_block *
+ dev->param.total_bytes_per_chunk);
+
+@@ -221,7 +221,7 @@ int nandmtd2_QueryNANDBlock(struct yaffs
+ T(YAFFS_TRACE_MTD,
+ (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), block_no));
+ retval =
+- mtd->block_isbad(mtd,
++ mtd_block_isbad(mtd,
+ block_no * dev->param.chunks_per_block *
+ dev->param.total_bytes_per_chunk);
+
+--- a/fs/yaffs2/yaffs_mtdif.h
++++ b/fs/yaffs2/yaffs_mtdif.h
+@@ -31,4 +31,39 @@ int nandmtd_InitialiseNAND(yaffs_dev_t *
+ #define MTD_OPS_AUTO_OOB MTD_OOB_AUTO
+ #endif
+
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 3, 0))
++static inline int mtd_erase(struct mdt_info *mtd, struct erase_info *ei)
++{
++ return mtd->erase(mtd, ei);
++}
++
++static inline int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs)
++{
++ return mtd->block_mark_bad(mtd, ofs);
++}
++
++static inline int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs)
++{
++ return mtd->block_is_bad(mtd, ofs);
++}
++
++static inline int mtd_read_oob(struct mtd_info *mtd, loff_t from,
++ struct mtd_oob_ops *ops)
++{
++ return mtd->read_oob(mtd, from, ops);
++}
++
++static inline int mtd_write_oob(struct mtd_info *mtd, loff_t to,
++ struct mtd_oob_ops *ops)
++{
++ return mtd->write_oob(mtd, to, ops);
++}
++
++static inline void mtd_sync(struct mtd_info *mtd)
++{
++ if (mtd->sync)
++ mtd->sync(mtd);
++}
++#endif
++
+ #endif
+--- a/fs/yaffs2/yaffs_mtdif.c
++++ b/fs/yaffs2/yaffs_mtdif.c
+@@ -41,7 +41,7 @@ int nandmtd_EraseBlockInNAND(yaffs_dev_t
+ ei.callback = NULL;
+ ei.priv = (u_long) dev;
+
+- retval = mtd->erase(mtd, &ei);
++ retval = mtd_erase(mtd, &ei);
+
+ if (retval == 0)
+ return YAFFS_OK;
diff --git a/target/linux/generic/patches-3.6/508-yaffs-3.3-use-mtd_-helpers.patch b/target/linux/generic/patches-3.6/508-yaffs-3.3-use-mtd_-helpers.patch
new file mode 100644
index 0000000000000000000000000000000000000000..65d45a0be1c3ae6e71053b6c6924d0ac9c9e6566
--- /dev/null
+++ b/target/linux/generic/patches-3.6/508-yaffs-3.3-use-mtd_-helpers.patch
@@ -0,0 +1,160 @@
+--- a/fs/yaffs2/yaffs_mtdif1.c
++++ b/fs/yaffs2/yaffs_mtdif1.c
+@@ -133,7 +133,7 @@ int nandmtd1_WriteChunkWithTagsToNAND(ya
+ ops.datbuf = (__u8 *)data;
+ ops.oobbuf = (__u8 *)&pt1;
+
+- retval = mtd->write_oob(mtd, addr, &ops);
++ retval = mtd_write_oob(mtd, addr, &ops);
+ if (retval) {
+ T(YAFFS_TRACE_MTD,
+ (TSTR("write_oob failed, chunk %d, mtd error %d"TENDSTR),
+@@ -194,7 +194,7 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y
+ /* Read page and oob using MTD.
+ * Check status and determine ECC result.
+ */
+- retval = mtd->read_oob(mtd, addr, &ops);
++ retval = mtd_read_oob(mtd, addr, &ops);
+ if (retval) {
+ T(YAFFS_TRACE_MTD,
+ (TSTR("read_oob failed, chunk %d, mtd error %d"TENDSTR),
+@@ -218,7 +218,7 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y
+ /* fall into... */
+ default:
+ rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0);
+- etags->block_bad = (mtd->block_isbad)(mtd, addr);
++ etags->block_bad = mtd_block_isbad(mtd, addr);
+ return YAFFS_FAIL;
+ }
+
+@@ -286,7 +286,7 @@ int nandmtd1_MarkNANDBlockBad(struct yaf
+
+ T(YAFFS_TRACE_BAD_BLOCKS,(TSTR("marking block %d bad"TENDSTR), block_no));
+
+- retval = mtd->block_markbad(mtd, (loff_t)blocksize * block_no);
++ retval = mtd_block_markbad(mtd, (loff_t)blocksize * block_no);
+ return (retval) ? YAFFS_FAIL : YAFFS_OK;
+ }
+
+@@ -336,7 +336,7 @@ int nandmtd1_QueryNANDBlock(struct yaffs
+ return YAFFS_FAIL;
+
+ retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags);
+- etags.block_bad = (mtd->block_isbad)(mtd, addr);
++ etags.block_bad = mtd_block_isbad(mtd, addr);
+ if (etags.block_bad) {
+ T(YAFFS_TRACE_BAD_BLOCKS,
+ (TSTR("block %d is marked bad"TENDSTR), block_no));
+--- a/fs/yaffs2/yaffs_vfs_glue.c
++++ b/fs/yaffs2/yaffs_vfs_glue.c
+@@ -2607,8 +2607,8 @@ static void yaffs_MTDPutSuper(struct sup
+ {
+ struct mtd_info *mtd = yaffs_dev_to_mtd(yaffs_SuperToDevice(sb));
+
+- if (mtd->sync)
+- mtd->sync(mtd);
++ if (mtd)
++ mtd_sync(mtd);
+
+ put_mtd_device(mtd);
+ }
+--- a/fs/yaffs2/yaffs_mtdif2.c
++++ b/fs/yaffs2/yaffs_mtdif2.c
+@@ -77,7 +77,7 @@ int nandmtd2_WriteChunkWithTagsToNAND(ya
+ ops.ooboffs = 0;
+ ops.datbuf = (__u8 *)data;
+ ops.oobbuf = (dev->param.inband_tags) ? NULL : packed_tags_ptr;
+- retval = mtd->write_oob(mtd, addr, &ops);
++ retval = mtd_write_oob(mtd, addr, &ops);
+
+ #else
+ if (!dev->param.inband_tags) {
+@@ -133,7 +133,7 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y
+
+ #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+ if (dev->param.inband_tags || (data && !tags))
+- retval = mtd->read(mtd, addr, dev->param.total_bytes_per_chunk,
++ retval = mtd_read(mtd, addr, dev->param.total_bytes_per_chunk,
+ &dummy, data);
+ else if (tags) {
+ ops.mode = MTD_OPS_AUTO_OOB;
+@@ -142,7 +142,7 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y
+ ops.ooboffs = 0;
+ ops.datbuf = data;
+ ops.oobbuf = yaffs_dev_to_lc(dev)->spareBuffer;
+- retval = mtd->read_oob(mtd, addr, &ops);
++ retval = mtd_read_oob(mtd, addr, &ops);
+ }
+ #else
+ if (!dev->param.inband_tags && data && tags) {
+@@ -201,7 +201,7 @@ int nandmtd2_MarkNANDBlockBad(struct yaf
+ (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), block_no));
+
+ retval =
+- mtd->block_markbad(mtd,
++ mtd_block_markbad(mtd,
+ block_no * dev->param.chunks_per_block *
+ dev->param.total_bytes_per_chunk);
+
+@@ -221,7 +221,7 @@ int nandmtd2_QueryNANDBlock(struct yaffs
+ T(YAFFS_TRACE_MTD,
+ (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), block_no));
+ retval =
+- mtd->block_isbad(mtd,
++ mtd_block_isbad(mtd,
+ block_no * dev->param.chunks_per_block *
+ dev->param.total_bytes_per_chunk);
+
+--- a/fs/yaffs2/yaffs_mtdif.h
++++ b/fs/yaffs2/yaffs_mtdif.h
+@@ -31,4 +31,39 @@ int nandmtd_InitialiseNAND(yaffs_dev_t *
+ #define MTD_OPS_AUTO_OOB MTD_OOB_AUTO
+ #endif
+
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 3, 0))
++static inline int mtd_erase(struct mdt_info *mtd, struct erase_info *ei)
++{
++ return mtd->erase(mtd, ei);
++}
++
++static inline int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs)
++{
++ return mtd->block_mark_bad(mtd, ofs);
++}
++
++static inline int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs)
++{
++ return mtd->block_is_bad(mtd, ofs);
++}
++
++static inline int mtd_read_oob(struct mtd_info *mtd, loff_t from,
++ struct mtd_oob_ops *ops)
++{
++ return mtd->read_oob(mtd, from, ops);
++}
++
++static inline int mtd_write_oob(struct mtd_info *mtd, loff_t to,
++ struct mtd_oob_ops *ops)
++{
++ return mtd->write_oob(mtd, to, ops);
++}
++
++static inline void mtd_sync(struct mtd_info *mtd)
++{
++ if (mtd->sync)
++ mtd->sync(mtd);
++}
++#endif
++
+ #endif
+--- a/fs/yaffs2/yaffs_mtdif.c
++++ b/fs/yaffs2/yaffs_mtdif.c
+@@ -41,7 +41,7 @@ int nandmtd_EraseBlockInNAND(yaffs_dev_t
+ ei.callback = NULL;
+ ei.priv = (u_long) dev;
+
+- retval = mtd->erase(mtd, &ei);
++ retval = mtd_erase(mtd, &ei);
+
+ if (retval == 0)
+ return YAFFS_OK;