pxa3xx_nand: disable nand irq in initialization

In some bootloader, IRQ is enabled. Writing nand triggers unexpected
interrupts. So disable nand irq in initialization. After nand
initialized and in working state, irq is controlled by nand driver.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index e75b1bf6df121cd134d47e58b307765c8c28bb91..11f32454fc77fbb4d2c64263ff1d6c6eddbb83ce 100644 (file)
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -1244,6 +1244,9 @@ static int pxa3xx_nand_probe(struct platform_device *pdev)
        if (ret)
                goto fail_free_io;
 
+       /* initialize all interrupts to be disabled */
+       disable_int(info, NDSR_MASK);
+
        ret = request_irq(irq, pxa3xx_nand_irq, IRQF_DISABLED,
                          pdev->name, info);
        if (ret < 0) {