linux-kernel - [PATCH 1/2] mtd: spi-nor: disable software protection for Macronix flash at startup

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Message-Id: <e4b01b739197bd4556617b70553093c58d3b1497.1463578353.git.mschiffer@universe-factory.net>
Date:	Wed, 18 May 2016 15:32:33 +0200
From:	Matthias Schiffer <mschiffer@...verse-factory.net>
To:	linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org
Cc:	Felix Fietkau <nbd@....name>
Subject: [PATCH 1/2] mtd: spi-nor: disable software protection for Macronix flash at startup

This patch has been tested in OpenWrt for a few months and seems to work
correctly.

Signed-off-by: Felix Fietkau <nbd@....name>
Signed-off-by: Matthias Schiffer <mschiffer@...verse-factory.net>
---
 drivers/mtd/spi-nor/spi-nor.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index 157841d..d681003 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -1304,6 +1304,7 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, enum read_mode mode)
 
 	if (JEDEC_MFR(info) == SNOR_MFR_ATMEL ||
 	    JEDEC_MFR(info) == SNOR_MFR_INTEL ||
+	    JEDEC_MFR(info) == SNOR_MFR_MACRONIX ||
 	    JEDEC_MFR(info) == SNOR_MFR_SST ||
 	    info->flags & SPI_NOR_HAS_LOCK) {
 		write_enable(nor);
-- 
2.8.2