[PATCH 04/13] imx nand: remove unnecessary register write

[Sascha Hauer]

NFC_SP_EN is cleared in probe and never set again, so we do not
need to clear it in other functions again.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 drivers/mtd/nand/nand_imx.c |   13 +------------
 1 files changed, 1 insertions(+), 12 deletions(-)

diff --git a/drivers/mtd/nand/nand_imx.c b/drivers/mtd/nand/nand_imx.c
index b49b7db..4b74974 100644
--- a/drivers/mtd/nand/nand_imx.c
+++ b/drivers/mtd/nand/nand_imx.c
@@ -321,16 +321,10 @@ static void send_page(struct imx_nand_host *host,
 static void send_read_id(struct imx_nand_host *host)
 {
 	struct nand_chip *this = &host->nand;
-	u16 tmp;
 
 	/* NANDFC buffer 0 is used for device ID output */
 	writew(0x0, host->regs + NFC_BUF_ADDR);
 
-	/* Read ID into main buffer */
-	tmp = readw(host->regs + NFC_CONFIG1);
-	tmp &= ~NFC_SP_EN;
-	writew(tmp, host->regs + NFC_CONFIG1);
-
 	writew(NFC_ID, host->regs + NFC_CONFIG2);
 
 	/* Wait for operation to complete */
@@ -362,7 +356,7 @@ static u16 get_dev_status(struct imx_nand_host *host)
 {
 	void *main_buf = host->main_area0;
 	u32 store;
-	u16 ret, tmp;
+	u16 ret;
 
 	writew(0x0, host->regs + NFC_BUF_ADDR);
 
@@ -373,11 +367,6 @@ static u16 get_dev_status(struct imx_nand_host *host)
 	 */
 	store = readl(main_buf);
 
-	/* Read status into main buffer */
-	tmp = readw(host->regs + NFC_CONFIG1);
-	tmp &= ~NFC_SP_EN;
-	writew(tmp, host->regs + NFC_CONFIG1);
-
 	writew(NFC_STATUS, host->regs + NFC_CONFIG2);
 
 	/* Wait for operation to complete */
-- 
1.7.2.3