mtd: rawnand: remove ->legacy.erase and single_erase()

Now that the last user of this hook, denali.c, stopped using it,
we can remove the erase hook from nand_legacy.

I squashed single_erase() because only the difference between
single_erase() and nand_erase_op() is the number of bit shifts.

The status/ret conversion in nand_erase_nand() is unneeded since
commit eb94555e9e97 ("mtd: nand: use usual return values for the
->erase() hook"). Cleaned it up now.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Boris Brezillon <bbrezillon@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

1 files changed, 4 insertions, 27 deletions

diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index e05ecf2e4269..cf207d6e7a81 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -4122,23 +4122,6 @@ out:
 }
 
 /**
- * single_erase - [GENERIC] NAND standard block erase command function
- * @chip: NAND chip object
- * @page: the page address of the block which will be erased
- *
- * Standard erase command for NAND chips. Returns NAND status.
- */
-static int single_erase(struct nand_chip *chip, int page)
-{
-	unsigned int eraseblock;
-
-	/* Send commands to erase a block */
-	eraseblock = page >> (chip->phys_erase_shift - chip->page_shift);
-
-	return nand_erase_op(chip, eraseblock);
-}
-
-/**
  * nand_erase - [MTD Interface] erase block(s)
  * @mtd: MTD device structure
  * @instr: erase instruction
@@ -4161,7 +4144,7 @@ static int nand_erase(struct mtd_info *mtd, struct erase_info *instr)
 int nand_erase_nand(struct nand_chip *chip, struct erase_info *instr,
 		    int allowbbt)
 {
-	int page, status, pages_per_block, ret, chipnr;
+	int page, pages_per_block, ret, chipnr;
 	loff_t len;
 
 	pr_debug("%s: start = 0x%012llx, len = %llu\n",
@@ -4215,17 +4198,11 @@ int nand_erase_nand(struct nand_chip *chip, struct erase_info *instr,
 		    (page + pages_per_block))
 			chip->pagebuf = -1;
 
-		if (chip->legacy.erase)
-			status = chip->legacy.erase(chip,
-						    page & chip->pagemask);
-		else
-			status = single_erase(chip, page & chip->pagemask);
-
-		/* See if block erase succeeded */
-		if (status) {
+		ret = nand_erase_op(chip, (page & chip->pagemask) >>
+				    (chip->phys_erase_shift - chip->page_shift));
+		if (ret) {
 			pr_debug("%s: failed erase, page 0x%08x\n",
 					__func__, page);
-			ret = -EIO;
 			instr->fail_addr =
 				((loff_t)page << chip->page_shift);
 			goto erase_exit;