linux-kernel - [PATCH 5.13 703/800] mtd: spi-nor: otp: fix access to security registers in 4 byte mode

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Date:   Mon, 12 Jul 2021 08:12:06 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Michael Walle <michael@...le.cc>,
        Vignesh Raghavendra <vigneshr@...com>,
        Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Pratyush Yadav <p.yadav@...com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.13 703/800] mtd: spi-nor: otp: fix access to security registers in 4 byte mode

From: Michael Walle <michael@...le.cc>

[ Upstream commit b97b1a769849beb6b40b740817b06f1a50e1c589 ]

The security registers either take a 3 byte or a 4 byte address offset,
depending on the address mode of the flash. Thus just leave the
nor->addr_width as is.

Fixes: cad3193fe9d1 ("mtd: spi-nor: implement OTP support for Winbond and similar flashes")
Signed-off-by: Michael Walle <michael@...le.cc>
Signed-off-by: Vignesh Raghavendra <vigneshr@...com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@...rochip.com>
Acked-by: Pratyush Yadav <p.yadav@...com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/mtd/spi-nor/otp.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/mtd/spi-nor/otp.c b/drivers/mtd/spi-nor/otp.c
index fcf38d260345..5c51a2c9be61 100644
--- a/drivers/mtd/spi-nor/otp.c
+++ b/drivers/mtd/spi-nor/otp.c
@@ -40,7 +40,6 @@ int spi_nor_otp_read_secr(struct spi_nor *nor, loff_t addr, size_t len, u8 *buf)
 	rdesc = nor->dirmap.rdesc;
 
 	nor->read_opcode = SPINOR_OP_RSECR;
-	nor->addr_width = 3;
 	nor->read_dummy = 8;
 	nor->read_proto = SNOR_PROTO_1_1_1;
 	nor->dirmap.rdesc = NULL;
@@ -84,7 +83,6 @@ int spi_nor_otp_write_secr(struct spi_nor *nor, loff_t addr, size_t len,
 	wdesc = nor->dirmap.wdesc;
 
 	nor->program_opcode = SPINOR_OP_PSECR;
-	nor->addr_width = 3;
 	nor->write_proto = SNOR_PROTO_1_1_1;
 	nor->dirmap.wdesc = NULL;
 
-- 
2.30.2