[MTD] [OneNAND] Consolidate OneNAND operation order

Consolidate OneNAND operation order as OneNAND Spec.
It also doesn't break previous operation order.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index 799bb1b..c79bc2e 100644 (file)
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -182,8 +182,7 @@ static int onenand_buffer_address(int dataram1, int sectors, int count)
 static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t len)
 {
        struct onenand_chip *this = mtd->priv;
-       int value, readcmd = 0, block_cmd = 0;
-       int block, page;
+       int value, block, page;
 
        /* Address translation */
        switch (cmd) {
@@ -198,7 +197,6 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t le
        case ONENAND_CMD_ERASE:
        case ONENAND_CMD_BUFFERRAM:
        case ONENAND_CMD_OTP_ACCESS:
-               block_cmd = 1;
                block = (int) (addr >> this->erase_shift);
                page = -1;
                break;
@@ -240,11 +238,9 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t le
                value = onenand_block_address(this, block);
                this->write_word(value, this->base + ONENAND_REG_START_ADDRESS1);
 
-               if (block_cmd) {
-                       /* Select DataRAM for DDP */
-                       value = onenand_bufferram_address(this, block);
-                       this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2);
-               }
+               /* Select DataRAM for DDP */
+               value = onenand_bufferram_address(this, block);
+               this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2);
        }
 
        if (page != -1) {
@@ -256,7 +252,6 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t le
                case ONENAND_CMD_READ:
                case ONENAND_CMD_READOOB:
                        dataram = ONENAND_SET_NEXT_BUFFERRAM(this);
-                       readcmd = 1;
                        break;
 
                default:
@@ -273,12 +268,6 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t le
                /* Write 'BSA, BSC' of DataRAM */
                value = onenand_buffer_address(dataram, sectors, count);
                this->write_word(value, this->base + ONENAND_REG_START_BUFFER);
-
-               if (readcmd) {
-                       /* Select DataRAM for DDP */
-                       value = onenand_bufferram_address(this, block);
-                       this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2);
-               }
        }
 
        /* Interrupt clear */