linux-kernel - [PATCH] mtd: spi-nor: core: Add an error message when failing to exit the 4-byte address mode

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 28 Jul 2022 06:01:59 +0300
From:   Tudor Ambarus <tudor.ambarus@...rochip.com>
To:     <pratyush@...nel.org>, <michael@...le.cc>
CC:     <miquel.raynal@...tlin.com>, <richard@....at>, <vigneshr@...com>,
        <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        "Tudor Ambarus" <tudor.ambarus@...rochip.com>,
        Pratyush Yadav <p.yadav@...com>
Subject: [PATCH] mtd: spi-nor: core: Add an error message when failing to exit the 4-byte address mode

Add an error message when failing to exit the 4-byte address mode. Do not
stop the execution and go through the spi_nor_soft_reset() method if used,
in the hope that the flash will default to 3-byte address mode after the
reset.

Suggested-by: Pratyush Yadav <p.yadav@...com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@...rochip.com>
---
 drivers/mtd/spi-nor/core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index f2c64006f8d7..1cdbdad97136 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -2841,7 +2841,8 @@ void spi_nor_restore(struct spi_nor *nor)
 	/* restore the addressing mode */
 	if (nor->addr_nbytes == 4 && !(nor->flags & SNOR_F_4B_OPCODES) &&
 	    nor->flags & SNOR_F_BROKEN_RESET)
-		nor->params->set_4byte_addr_mode(nor, false);
+		if (nor->params->set_4byte_addr_mode(nor, false))
+			dev_err(nor->dev, "Failed to exit 4-byte address mode\n");
 
 	if (nor->flags & SNOR_F_SOFT_RESET)
 		spi_nor_soft_reset(nor);
-- 
2.25.1