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[U-Boot,RFC,v3,04/10] mtd: nand: pxa3xx_nand: fix early spurious interrupt

Message ID 1512543348-1673-5-git-send-email-oferh@marvell.com
State RFC
Headers show
Series pxa3xx_nand updates | expand

Commit Message

Ofer Heifetz Dec. 6, 2017, 6:55 a.m. UTC 
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.

[ Linux commit 0b14392db2e998157d924085d7913e537ec26121 ]

Cc: Robert Jarzmik <robert.jarzmik at free.fr>
Signed-off-by: Chris Packham <judge.packham at gmail.com>
Reviewed-by: Ofer Heifetz <oferh@marvell.com>
Tested-by: Ofer Heifetz <oferh@marvell.com>
---
 drivers/mtd/nand/pxa3xx_nand.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index 3feaf0c..5d37f22 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -482,8 +482,8 @@  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);
 }