From: Ofer Heifetz oferh@marvell.com
When the nand is first probe, and upon the first command start, the status bits should be cleared before the interrupts are unmasked.
This commit is taken from Linux: 'commit 0b14392db2e' ("mtd: nand: pxa3xx_nand: fix early spurious interrupt")
Signed-off-by: Chris Packham judge.packham@gmail.com Signed-off-by: Ofer Heifetz oferh@marvell.com Reviewed-by: Igal Liberman igall@marvell.com Cc: Stefan Roese sr@denx.de Cc: Simon Glass sjg@chromium.org --- drivers/mtd/nand/pxa3xx_nand.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index 8e450fb..7b1dcb2 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -481,8 +481,8 @@ static void pxa3xx_nand_start(struct pxa3xx_nand_info *info) ndcr |= NDCR_ND_RUN;
/* clear status bits and run */ - nand_writel(info, NDCR, 0); nand_writel(info, NDSR, NDSR_MASK); + nand_writel(info, NDCR, 0); nand_writel(info, NDCR, ndcr); }