linux-kernel - [PATCH] mtd: spi-nor: Kill check with no effect

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Date:   Sun, 17 Sep 2017 16:13:52 +0200
From:   Richard Weinberger <richard@....at>
To:     linux-mtd@...ts.infradead.org
Cc:     linux-kernel@...r.kernel.org, boris.brezillon@...e-electrons.com,
        computersforpeace@...il.com, dwmw2@...radead.org,
        marek.vasut@...il.com, cyrille.pitchen@...ev4u.fr,
        Richard Weinberger <richard@....at>
Subject: [PATCH] mtd: spi-nor: Kill check with no effect

header.major is of type u8 and cannot be negative.

Detected by CoverityScan CID#1417858 ("Integer handling issues")

Fixes: f384b352cbf0 ("mtd: spi-nor: parse Serial Flash Discoverable
Parameters (SFDP) tables")
Signed-off-by: Richard Weinberger <richard@....at>
---
Cyrille,

I'm not sure what exactly you wanted to test.
Maybe it makes sense casting header.major to s8 before checking against < 0?

Thanks,
//richard
---
 drivers/mtd/spi-nor/spi-nor.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index d71765739a93..4b86decdf13e 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -2252,8 +2252,7 @@ static int spi_nor_parse_sfdp(struct spi_nor *nor,
 
 	/* Check the SFDP header version. */
 	if (le32_to_cpu(header.signature) != SFDP_SIGNATURE ||
-	    header.major != SFDP_JESD216_MAJOR ||
-	    header.minor < SFDP_JESD216_MINOR)
+	    header.major != SFDP_JESD216_MAJOR)
 		return -EINVAL;
 
 	/*
-- 
2.13.5