From 6b3d175928417f55537fe271df983f7ed52915f3 Mon Sep 17 00:00:00 2001
From: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Date: Thu, 2 Nov 2023 12:27:33 +0100
Subject: [PATCH] mtd: nand: complete nand_register() arguments check
The patch checks that the "mtd" parameter is accessible before
proceeding.
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Michael Trimarchi <michael@amarulasolutions.com>
Link: https://lore.kernel.org/all/20231102112743.57420-1-dario.binacchi@amarulasolutions.com
---
drivers/mtd/nand/raw/nand.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/nand/raw/nand.c b/drivers/mtd/nand/raw/nand.c
index 4c18861aa2..c1a0ebe648 100644
--- a/drivers/mtd/nand/raw/nand.c
+++ b/drivers/mtd/nand/raw/nand.c
@@ -52,7 +52,7 @@ int nand_mtd_to_devnum(struct mtd_info *mtd)
/* Register an initialized NAND mtd device with the U-Boot NAND command. */
int nand_register(int devnum, struct mtd_info *mtd)
{
- if (devnum >= CONFIG_SYS_MAX_NAND_DEVICE)
+ if (!mtd || devnum >= CONFIG_SYS_MAX_NAND_DEVICE)
return -EINVAL;
nand_info[devnum] = mtd;
--
2.39.5