[U-Boot] [PATCH 04/19] mtd: nand: pxa3xx_nand: fix early spurious interrupt

[kostap at marvell.com]

From: Ofer Heifetz <oferh at 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 at gmail.com>
Signed-off-by: Ofer Heifetz <oferh at marvell.com>
Reviewed-by: Igal Liberman <igall at marvell.com>
Cc: Stefan Roese <sr at denx.de>
Cc: Simon Glass <sjg at 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);
 }
 
-- 
2.7.4