kernel: remove yaffs2 support, it is no longer needed

Signed-off-by: Felix Fietkau <nbd@nbd.name>

1 files changed, 0 insertions, 310 deletions

diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c
deleted file mode 100644
index d15c660638..0000000000
--- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c
+++ /dev/null
@@ -1,310 +0,0 @@
-/*
- * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
- *
- * Copyright (C) 2002-2011 Aleph One Ltd.
- *   for Toby Churchill Ltd and Brightstar Engineering
- *
- * Created by Charles Manning <charles@aleph1.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include "yportenv.h"
-
-#include "yaffs_mtdif.h"
-
-#include "linux/mtd/mtd.h"
-#include "linux/types.h"
-#include "linux/time.h"
-#include "linux/mtd/nand.h"
-#include "linux/kernel.h"
-#include "linux/version.h"
-#include "linux/types.h"
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0))
-#include "uapi/linux/major.h"
-#endif
-
-#include "yaffs_trace.h"
-#include "yaffs_guts.h"
-#include "yaffs_linux.h"
-
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 2, 0))
-#define MTD_OPS_AUTO_OOB MTD_OOB_AUTO
-#endif
-
-
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 4, 0))
-#define mtd_erase(m, ei) (m)->erase(m, ei)
-#define mtd_write_oob(m, addr, pops) (m)->write_oob(m, addr, pops)
-#define mtd_read_oob(m, addr, pops) (m)->read_oob(m, addr, pops)
-#define mtd_block_isbad(m, offs) (m)->block_isbad(m, offs)
-#define mtd_block_markbad(m, offs) (m)->block_markbad(m, offs)
-#endif
-
-
-
-int nandmtd_erase_block(struct yaffs_dev *dev, int block_no)
-{
-	struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
-	u32 addr =
-	    ((loff_t) block_no) * dev->param.total_bytes_per_chunk *
-	    dev->param.chunks_per_block;
-	struct erase_info ei;
-	int retval = 0;
-
-	ei.mtd = mtd;
-	ei.addr = addr;
-	ei.len = dev->param.total_bytes_per_chunk * dev->param.chunks_per_block;
-	ei.time = 1000;
-	ei.retries = 2;
-	ei.callback = NULL;
-	ei.priv = (u_long) dev;
-
-	retval = mtd_erase(mtd, &ei);
-
-	if (retval == 0)
-		return YAFFS_OK;
-
-	return YAFFS_FAIL;
-}
-
-
-static 	int yaffs_mtd_write(struct yaffs_dev *dev, int nand_chunk,
-				   const u8 *data, int data_len,
-				   const u8 *oob, int oob_len)
-{
-	struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
-	loff_t addr;
-	struct mtd_oob_ops ops;
-	int retval;
-
-	yaffs_trace(YAFFS_TRACE_MTD,
-			"yaffs_mtd_write(%p, %d, %p, %d, %p, %d)\n",
-			dev, nand_chunk, data, data_len, oob, oob_len);
-
-	if (!data || !data_len) {
-		data = NULL;
-		data_len = 0;
-	}
-
-	if (!oob || !oob_len) {
-		oob = NULL;
-		oob_len = 0;
-	}
-
-	addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk;
-	memset(&ops, 0, sizeof(ops));
-	ops.mode = MTD_OPS_AUTO_OOB;
-	ops.len = (data) ? data_len : 0;
-	ops.ooblen = oob_len;
-	ops.datbuf = (u8 *)data;
-	ops.oobbuf = (u8 *)oob;
-
-	retval = mtd_write_oob(mtd, addr, &ops);
-	if (retval) {
-		yaffs_trace(YAFFS_TRACE_MTD,
-			"write_oob failed, chunk %d, mtd error %d",
-			nand_chunk, retval);
-	}
-	return retval ? YAFFS_FAIL : YAFFS_OK;
-}
-
-static int yaffs_mtd_read(struct yaffs_dev *dev, int nand_chunk,
-				   u8 *data, int data_len,
-				   u8 *oob, int oob_len,
-				   enum yaffs_ecc_result *ecc_result)
-{
-	struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
-	loff_t addr;
-	struct mtd_oob_ops ops;
-	int retval;
-
-	addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk;
-	memset(&ops, 0, sizeof(ops));
-	ops.mode = MTD_OPS_AUTO_OOB;
-	ops.len = (data) ? data_len : 0;
-	ops.ooblen = oob_len;
-	ops.datbuf = data;
-	ops.oobbuf = oob;
-
-#if (MTD_VERSION_CODE < MTD_VERSION(2, 6, 20))
-	/* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug;
-	 * help it out with ops.len = ops.ooblen when ops.datbuf == NULL.
-	 */
-	ops.len = (ops.datbuf) ? ops.len : ops.ooblen;
-#endif
-	/* Read page and oob using MTD.
-	 * Check status and determine ECC result.
-	 */
-	retval = mtd_read_oob(mtd, addr, &ops);
-	if (retval)
-		yaffs_trace(YAFFS_TRACE_MTD,
-			"read_oob failed, chunk %d, mtd error %d",
-			nand_chunk, retval);
-
-	switch (retval) {
-	case 0:
-		/* no error */
-		if(ecc_result)
-			*ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
-		break;
-
-	case -EUCLEAN:
-		/* MTD's ECC fixed the data */
-		if(ecc_result)
-			*ecc_result = YAFFS_ECC_RESULT_FIXED;
-		dev->n_ecc_fixed++;
-		break;
-
-	case -EBADMSG:
-	default:
-		/* MTD's ECC could not fix the data */
-		dev->n_ecc_unfixed++;
-		if(ecc_result)
-			*ecc_result = YAFFS_ECC_RESULT_UNFIXED;
-		return YAFFS_FAIL;
-	}
-
-	return YAFFS_OK;
-}
-
-static 	int yaffs_mtd_erase(struct yaffs_dev *dev, int block_no)
-{
-	struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
-
-	loff_t addr;
-	struct erase_info ei;
-	int retval = 0;
-	u32 block_size;
-
-	block_size = dev->param.total_bytes_per_chunk *
-		     dev->param.chunks_per_block;
-	addr = ((loff_t) block_no) * block_size;
-
-	ei.mtd = mtd;
-	ei.addr = addr;
-	ei.len = block_size;
-	ei.time = 1000;
-	ei.retries = 2;
-	ei.callback = NULL;
-	ei.priv = (u_long) dev;
-
-	retval = mtd_erase(mtd, &ei);
-
-	if (retval == 0)
-		return YAFFS_OK;
-
-	return YAFFS_FAIL;
-}
-
-static int yaffs_mtd_mark_bad(struct yaffs_dev *dev, int block_no)
-{
-	struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
-	int blocksize = dev->param.chunks_per_block * dev->param.total_bytes_per_chunk;
-	int retval;
-
-	yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", block_no);
-
-	retval = mtd_block_markbad(mtd, (loff_t) blocksize * block_no);
-	return (retval) ? YAFFS_FAIL : YAFFS_OK;
-}
-
-static int yaffs_mtd_check_bad(struct yaffs_dev *dev, int block_no)
-{
-	struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
-	int blocksize = dev->param.chunks_per_block * dev->param.total_bytes_per_chunk;
-	int retval;
-
-	yaffs_trace(YAFFS_TRACE_MTD, "checking block %d bad", block_no);
-
-	retval = mtd_block_isbad(mtd, (loff_t) blocksize * block_no);
-	return (retval) ? YAFFS_FAIL : YAFFS_OK;
-}
-
-static int yaffs_mtd_initialise(struct yaffs_dev *dev)
-{
-	return YAFFS_OK;
-}
-
-static int yaffs_mtd_deinitialise(struct yaffs_dev *dev)
-{
-	return YAFFS_OK;
-}
-
-
-void yaffs_mtd_drv_install(struct yaffs_dev *dev)
-{
-	struct yaffs_driver *drv = &dev->drv;
-
-	drv->drv_write_chunk_fn = yaffs_mtd_write;
-	drv->drv_read_chunk_fn = yaffs_mtd_read;
-	drv->drv_erase_fn = yaffs_mtd_erase;
-	drv->drv_mark_bad_fn = yaffs_mtd_mark_bad;
-	drv->drv_check_bad_fn = yaffs_mtd_check_bad;
-	drv->drv_initialise_fn = yaffs_mtd_initialise;
-	drv->drv_deinitialise_fn = yaffs_mtd_deinitialise;
-}
-
-
-struct mtd_info * yaffs_get_mtd_device(dev_t sdev)
-{
-	struct mtd_info *mtd;
-
-	mtd = yaffs_get_mtd_device(sdev);
-
-	/* Check it's an mtd device..... */
-	if (MAJOR(sdev) != MTD_BLOCK_MAJOR)
-		return NULL;	/* This isn't an mtd device */
-
-	/* Check it's NAND */
-	if (mtd->type != MTD_NANDFLASH && mtd->type != MTD_MLCNANDFLASH) {
-		yaffs_trace(YAFFS_TRACE_ALWAYS,
-			"yaffs: MTD device is not NAND it's type %d",
-			mtd->type);
-		return NULL;
-	}
-
-	yaffs_trace(YAFFS_TRACE_OS, " %s %d", WRITE_SIZE_STR, WRITE_SIZE(mtd));
-	yaffs_trace(YAFFS_TRACE_OS, " oobsize %d", mtd->oobsize);
-	yaffs_trace(YAFFS_TRACE_OS, " erasesize %d", mtd->erasesize);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29)
-	yaffs_trace(YAFFS_TRACE_OS, " size %u", mtd->size);
-#else
-	yaffs_trace(YAFFS_TRACE_OS, " size %lld", mtd->size);
-#endif
-
-	return mtd;
-}
-
-int yaffs_verify_mtd(struct mtd_info *mtd, int yaffs_version, int inband_tags)
-{
-	if (yaffs_version == 2) {
-		if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
-		     mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) &&
-		    !inband_tags) {
-			yaffs_trace(YAFFS_TRACE_ALWAYS,
-				"MTD device does not have the right page sizes"
-			);
-			return -1;
-		}
-	} else {
-		if (WRITE_SIZE(mtd) < YAFFS_BYTES_PER_CHUNK ||
-		    mtd->oobsize != YAFFS_BYTES_PER_SPARE) {
-			yaffs_trace(YAFFS_TRACE_ALWAYS,
-				"MTD device does not support have the right page sizes"
-			);
-			return -1;
-		}
-	}
-
-	return 0;
-}
-
-
-void yaffs_put_mtd_device(struct mtd_info *mtd)
-{
-	if(mtd)
-		put_mtd_device(mtd);
-}