mtd: Stop updating erase_info->state and calling mtd_erase_callback()

MTD users are no longer checking erase_info->state to determine if the
erase operation failed or succeeded. Moreover, mtd_erase_callback() is
now a NOP.

We can safely get rid of all mtd_erase_callback() calls and all
erase_info->state assignments. While at it, get rid of the
erase_info->state field, all MTD_ERASE_XXX definitions and the
mtd_erase_callback() function.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Bert Kenward <bkenward@solarflare.com>
---
Changes in v2:
- Address a few coding style issues (reported by Miquel)
- Remove comments that are no longer valid (reported by Miquel)

4 files changed, 5 insertions, 42 deletions

diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index 5e1b68cbcd0a..d4c07b85f18e 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -1993,20 +1993,8 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
 
 static int cfi_intelext_erase_varsize(struct mtd_info *mtd, struct erase_info *instr)
 {
-	unsigned long ofs, len;
-	int ret;
-
-	ofs = instr->addr;
-	len = instr->len;
-
-	ret = cfi_varsize_frob(mtd, do_erase_oneblock, ofs, len, NULL);
-	if (ret)
-		return ret;
-
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
-
-	return 0;
+	return cfi_varsize_frob(mtd, do_erase_oneblock, instr->addr,
+				instr->len, NULL);
 }
 
 static void cfi_intelext_sync (struct mtd_info *mtd)
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
index 56aa6b75213d..668e2cbc155b 100644
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -2415,20 +2415,8 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
 
 static int cfi_amdstd_erase_varsize(struct mtd_info *mtd, struct erase_info *instr)
 {
-	unsigned long ofs, len;
-	int ret;
-
-	ofs = instr->addr;
-	len = instr->len;
-
-	ret = cfi_varsize_frob(mtd, do_erase_oneblock, ofs, len, NULL);
-	if (ret)
-		return ret;
-
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
-
-	return 0;
+	return cfi_varsize_frob(mtd, do_erase_oneblock, instr->addr,
+				instr->len, NULL);
 }
 
 
@@ -2436,7 +2424,6 @@ static int cfi_amdstd_erase_chip(struct mtd_info *mtd, struct erase_info *instr)
 {
 	struct map_info *map = mtd->priv;
 	struct cfi_private *cfi = map->fldrv_priv;
-	int ret = 0;
 
 	if (instr->addr != 0)
 		return -EINVAL;
@@ -2444,14 +2431,7 @@ static int cfi_amdstd_erase_chip(struct mtd_info *mtd, struct erase_info *instr)
 	if (instr->len != mtd->size)
 		return -EINVAL;
 
-	ret = do_erase_chip(map, &cfi->chips[0]);
-	if (ret)
-		return ret;
-
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
-
-	return 0;
+	return do_erase_chip(map, &cfi->chips[0]);
 }
 
 static int do_atmel_lock(struct map_info *map, struct flchip *chip,
diff --git a/drivers/mtd/chips/cfi_cmdset_0020.c b/drivers/mtd/chips/cfi_cmdset_0020.c
index 7d342965f392..7b7658a05036 100644
--- a/drivers/mtd/chips/cfi_cmdset_0020.c
+++ b/drivers/mtd/chips/cfi_cmdset_0020.c
@@ -965,9 +965,6 @@ static int cfi_staa_erase_varsize(struct mtd_info *mtd,
 		}
 	}
 
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
-
 	return 0;
 }
 
diff --git a/drivers/mtd/chips/map_ram.c b/drivers/mtd/chips/map_ram.c
index 1cd0fff0e940..c37fce926864 100644
--- a/drivers/mtd/chips/map_ram.c
+++ b/drivers/mtd/chips/map_ram.c
@@ -131,8 +131,6 @@ static int mapram_erase (struct mtd_info *mtd, struct erase_info *instr)
 	allff = map_word_ff(map);
 	for (i=0; i<instr->len; i += map_bankwidth(map))
 		map_write(map, allff, instr->addr + i);
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
 	return 0;
 }