From e99e812e12909c32b236efb10c16598663236675 Mon Sep 17 00:00:00 2001
From: Christophe Kerello <christophe.kerello@st.com>
Date: Fri, 31 Jul 2020 09:53:34 +0200
Subject: [PATCH] mtd: rawnand: stm32_fmc2: fix a buffer overflow
The chip select defined in the device tree could only be 0 or 1.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
---
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 3306bd8ac9..2929acf66d 100644
--- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
+++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
@@ -846,7 +846,7 @@ static int stm32_fmc2_parse_child(struct stm32_fmc2_nfc *fmc2,
}
for (i = 0; i < nand->ncs; i++) {
- if (cs[i] > FMC2_MAX_CE) {
+ if (cs[i] >= FMC2_MAX_CE) {
pr_err("Invalid reg value: %d\n",
nand->cs_used[i]);
return -EINVAL;
--
2.39.5