From: Christophe Kerello <christophe.kerello@st.com>
To: <miquel.raynal@bootlin.com>, <richard@nod.at>, <vigneshr@ti.com>
Cc: Christophe Kerello <christophe.kerello@st.com>,
linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org,
dan.carpenter@oracle.com,
linux-stm32@st-md-mailman.stormreply.com
Subject: [PATCH] mtd: rawnand: stm32_fmc2: fix a buffer overflow
Date: Tue, 21 Jul 2020 11:52:07 +0200 [thread overview]
Message-ID: <1595325127-32693-1-git-send-email-christophe.kerello@st.com> (raw)
This patch solves following static checker warning:
drivers/mtd/nand/raw/stm32_fmc2_nand.c:350 stm32_fmc2_nfc_select_chip()
error: buffer overflow 'nfc->data_phys_addr' 2 <= 2
The CS value can only be 0 or 1.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Fixes: 2cd457f328c1 ("mtd: rawnand: stm32_fmc2: add STM32 FMC2 NAND flash controller driver")
---
drivers/mtd/nand/raw/stm32_fmc2_nand.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
index a4140af..74fecde 100644
--- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
+++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
@@ -1791,7 +1791,7 @@ static int stm32_fmc2_nfc_parse_child(struct stm32_fmc2_nfc *nfc,
return ret;
}
- if (cs > FMC2_MAX_CE) {
+ if (cs >= FMC2_MAX_CE) {
dev_err(nfc->dev, "invalid reg value: %d\n", cs);
return -EINVAL;
}
--
1.9.1
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next reply other threads:[~2020-07-21 9:53 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-21 9:52 Christophe Kerello [this message]
2020-09-07 7:22 ` [PATCH] mtd: rawnand: stm32_fmc2: fix a buffer overflow Miquel Raynal
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