[MTD] NAND remove write_byte/word function from nand_chip

The previous change of the command / hardware control allows to
remove the write_byte/word functions completely, as their only
user were nand_command and nand_command_lp.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 6 insertions, 5 deletions

diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c
index e4bb6b429f87..2ec9080e2b14 100644
--- a/drivers/mtd/nand/diskonchip.c
+++ b/drivers/mtd/nand/diskonchip.c
@@ -717,8 +717,12 @@ static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd,
                 /* 11.4.3 -- 4 NOPs after CSDNControl write */
                 DoC_Delay(doc, 4);
         }
-        if (cmd != NAND_CMD_NONE)
-                this->write_byte(mtd, cmd);
+        if (cmd != NAND_CMD_NONE) {
+                if (DoC_is_2000(doc))
+                        doc2000_write_byte(mtd, cmd);
+                else
+                        doc2001_write_byte(mtd, cmd);
+        }
 }
 
 static void doc2001plus_command(struct mtd_info *mtd, unsigned command, int column, int page_addr)
@@ -1435,7 +1439,6 @@ static inline int __init doc2000_init(struct mtd_info *mtd)
         struct nand_chip *this = mtd->priv;
         struct doc_priv *doc = this->priv;
 
-        this->write_byte = doc2000_write_byte;
         this->read_byte = doc2000_read_byte;
         this->write_buf = doc2000_writebuf;
         this->read_buf = doc2000_readbuf;
@@ -1453,7 +1456,6 @@ static inline int __init doc2001_init(struct mtd_info *mtd)
         struct nand_chip *this = mtd->priv;
         struct doc_priv *doc = this->priv;
 
-        this->write_byte = doc2001_write_byte;
         this->read_byte = doc2001_read_byte;
         this->write_buf = doc2001_writebuf;
         this->read_buf = doc2001_readbuf;
@@ -1485,7 +1487,6 @@ static inline int __init doc2001plus_init(struct mtd_info *mtd)
         struct nand_chip *this = mtd->priv;
         struct doc_priv *doc = this->priv;
 
-        this->write_byte = NULL;
         this->read_byte = doc2001plus_read_byte;
         this->write_buf = doc2001plus_writebuf;
         this->read_buf = doc2001plus_readbuf;