[PATCH] mtd: rawnand: stm32_fmc2: fix a buffer overflow

[Christophe Kerello]

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.kere...@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