mtd: resync with Linux-3.7.1

This patch is essentially an update of u-boot MTD subsystem to
the state of Linux-3.7.1 with exclusion of some bits:

- the update is concentrated on NAND, no onenand or CFI/NOR/SPI
flashes interfaces are updated EXCEPT for API changes.

- new large NAND chips support is there, though some updates
have got in Linux-3.8.-rc1, (which will follow on top of this patch).

To produce this update I used tag v3.7.1 of linux-stable repository.

The update was made using application of relevant patches,
with changes relevant to U-Boot-only stuff sticked together
to keep bisectability. Then all changes were grouped together
to this patch.

Signed-off-by: Sergey Lapin <slapin@ossfans.org>
[scottwood@freescale.com: some eccstrength and build fixes]
Signed-off-by: Scott Wood <scottwood@freescale.com>

6 files changed, 11 insertions, 11 deletions

diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index a708162..2588822 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -539,7 +539,7 @@ static int io_init(struct ubi_device *ubi)
 	ubi->peb_count  = mtd_div_by_eb(ubi->mtd->size, ubi->mtd);
 	ubi->flash_size = ubi->mtd->size;
 
-	if (ubi->mtd->block_isbad && ubi->mtd->block_markbad)
+	if (mtd_can_have_bb(ubi->mtd))
 		ubi->bad_allowed = 1;
 
 	ubi->min_io_size = ubi->mtd->writesize;
diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c
index d523c94..d2d3c9c 100644
--- a/drivers/mtd/ubi/eba.c
+++ b/drivers/mtd/ubi/eba.c
@@ -460,7 +460,7 @@ retry:
 		if (err == UBI_IO_BITFLIPS) {
 			scrub = 1;
 			err = 0;
-		} else if (err == -EBADMSG) {
+		} else if (mtd_is_eccerr(err)) {
 			if (vol->vol_type == UBI_DYNAMIC_VOLUME)
 				goto out_unlock;
 			scrub = 1;
diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
index 8423894..05de9ae 100644
--- a/drivers/mtd/ubi/io.c
+++ b/drivers/mtd/ubi/io.c
@@ -154,7 +154,7 @@ int ubi_io_read(const struct ubi_device *ubi, void *buf, int pnum, int offset,
 
 	addr = (loff_t)pnum * ubi->peb_size + offset;
 retry:
-	err = ubi->mtd->read(ubi->mtd, addr, len, &read, buf);
+	err = mtd_read(ubi->mtd, addr, len, &read, buf);
 	if (err) {
 		if (err == -EUCLEAN) {
 			/*
@@ -268,7 +268,7 @@ int ubi_io_write(struct ubi_device *ubi, const void *buf, int pnum, int offset,
 	}
 
 	addr = (loff_t)pnum * ubi->peb_size + offset;
-	err = ubi->mtd->write(ubi->mtd, addr, len, &written, buf);
+	err = mtd_write(ubi->mtd, addr, len, &written, buf);
 	if (err) {
 		ubi_err("error %d while writing %d bytes to PEB %d:%d, written"
 			" %zd bytes", err, len, pnum, offset, written);
@@ -318,7 +318,7 @@ retry:
 	ei.callback = erase_callback;
 	ei.priv     = (unsigned long)&wq;
 
-	err = ubi->mtd->erase(ubi->mtd, &ei);
+	err = mtd_erase(ubi->mtd, &ei);
 	if (err) {
 		if (retries++ < UBI_IO_RETRIES) {
 			dbg_io("error %d while erasing PEB %d, retry",
@@ -516,7 +516,7 @@ int ubi_io_is_bad(const struct ubi_device *ubi, int pnum)
 	if (ubi->bad_allowed) {
 		int ret;
 
-		ret = mtd->block_isbad(mtd, (loff_t)pnum * ubi->peb_size);
+		ret = mtd_block_isbad(mtd, (loff_t)pnum * ubi->peb_size);
 		if (ret < 0)
 			ubi_err("error %d while checking if PEB %d is bad",
 				ret, pnum);
@@ -551,7 +551,7 @@ int ubi_io_mark_bad(const struct ubi_device *ubi, int pnum)
 	if (!ubi->bad_allowed)
 		return 0;
 
-	err = mtd->block_markbad(mtd, (loff_t)pnum * ubi->peb_size);
+	err = mtd_block_markbad(mtd, (loff_t)pnum * ubi->peb_size);
 	if (err)
 		ubi_err("cannot mark PEB %d bad, error %d", pnum, err);
 	return err;
@@ -1242,7 +1242,7 @@ static int paranoid_check_all_ff(struct ubi_device *ubi, int pnum, int offset,
 	loff_t addr = (loff_t)pnum * ubi->peb_size + offset;
 
 	mutex_lock(&ubi->dbg_buf_mutex);
-	err = ubi->mtd->read(ubi->mtd, addr, len, &read, ubi->dbg_peb_buf);
+	err = mtd_read(ubi->mtd, addr, len, &read, ubi->dbg_peb_buf);
 	if (err && err != -EUCLEAN) {
 		ubi_err("error %d while reading %d bytes from PEB %d:%d, "
 			"read %zd bytes", err, len, pnum, offset, read);
diff --git a/drivers/mtd/ubi/kapi.c b/drivers/mtd/ubi/kapi.c
index 423d479..e553188 100644
--- a/drivers/mtd/ubi/kapi.c
+++ b/drivers/mtd/ubi/kapi.c
@@ -349,7 +349,7 @@ int ubi_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset,
 		return 0;
 
 	err = ubi_eba_read_leb(ubi, vol, lnum, buf, offset, len, check);
-	if (err && err == -EBADMSG && vol->vol_type == UBI_STATIC_VOLUME) {
+	if (err && mtd_is_eccerr(err) && vol->vol_type == UBI_STATIC_VOLUME) {
 		ubi_warn("mark volume %d as corrupted", vol_id);
 		vol->corrupted = 1;
 	}
diff --git a/drivers/mtd/ubi/misc.c b/drivers/mtd/ubi/misc.c
index a6410bf..e8660d9 100644
--- a/drivers/mtd/ubi/misc.c
+++ b/drivers/mtd/ubi/misc.c
@@ -82,7 +82,7 @@ int ubi_check_volume(struct ubi_device *ubi, int vol_id)
 
 		err = ubi_eba_read_leb(ubi, vol, i, buf, 0, size, 1);
 		if (err) {
-			if (err == -EBADMSG)
+			if (mtd_is_eccerr(err))
 				err = 1;
 			break;
 		}
diff --git a/drivers/mtd/ubi/vtbl.c b/drivers/mtd/ubi/vtbl.c
index f679f06..29d2320 100644
--- a/drivers/mtd/ubi/vtbl.c
+++ b/drivers/mtd/ubi/vtbl.c
@@ -388,7 +388,7 @@ static struct ubi_vtbl_record *process_lvol(struct ubi_device *ubi,
 
 		err = ubi_io_read_data(ubi, leb[seb->lnum], seb->pnum, 0,
 				       ubi->vtbl_size);
-		if (err == UBI_IO_BITFLIPS || err == -EBADMSG)
+		if (err == UBI_IO_BITFLIPS || mtd_is_eccerr(err))
 			/*
 			 * Scrub the PEB later. Note, -EBADMSG indicates an
 			 * uncorrectable ECC error, but we have our own CRC and