From cbfff3b123a169e249c41b071e4065bce3a2e18a Mon Sep 17 00:00:00 2001 From: Dario Binacchi Date: Thu, 2 Nov 2023 12:38:22 +0100 Subject: [PATCH] mtd: nand: check nand_mtd_to_devnum() argument If the "mtd" parameter is NULL, the search will definitely yield a negative result. In that case, it's better to exit immediately. Signed-off-by: Dario Binacchi Reviewed-by: Michael Trimarchi Link: https://lore.kernel.org/all/20231102113829.58852-1-dario.binacchi@amarulasolutions.com --- drivers/mtd/nand/raw/nand.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/nand/raw/nand.c b/drivers/mtd/nand/raw/nand.c index c1a0ebe648..b591170346 100644 --- a/drivers/mtd/nand/raw/nand.c +++ b/drivers/mtd/nand/raw/nand.c @@ -41,8 +41,11 @@ int nand_mtd_to_devnum(struct mtd_info *mtd) { int i; + if (!mtd) + return -ENODEV; + for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) { - if (mtd && get_nand_dev_by_index(i) == mtd) + if (get_nand_dev_by_index(i) == mtd) return i; } -- 2.39.5