mxc_nand: disable sp_en bit only once

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index 4a69682..2e3f3fb 100644 (file)
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -274,16 +274,10 @@ static void send_page(struct mtd_info *mtd, unsigned int ops)
 static void send_read_id(struct mxc_nand_host *host)
 {
        struct nand_chip *this = &host->nand;
-       uint16_t 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 */
@@ -307,7 +301,7 @@ static uint16_t get_dev_status(struct mxc_nand_host *host)
 {
        void __iomem *main_buf = host->main_area1;
        uint32_t store;
-       uint16_t ret, tmp;
+       uint16_t ret;
        /* Issue status request to NAND device */
 
        /* store the main area1 first word, later do recovery */
@@ -316,11 +310,6 @@ static uint16_t get_dev_status(struct mxc_nand_host *host)
         * corruption of read/write buffer on status requests. */
        writew(1, host->regs + NFC_BUF_ADDR);
 
-       /* 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 */
@@ -739,8 +728,10 @@ static int __init mxcnd_probe(struct platform_device *pdev)
        } else
                BUG();
 
+       /* disable interrupt and spare enable */
        tmp = readw(host->regs + NFC_CONFIG1);
        tmp |= NFC_INT_MSK;
+       tmp &= ~NFC_SP_EN;
        writew(tmp, host->regs + NFC_CONFIG1);
 
        init_waitqueue_head(&host->irq_waitq);