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mtd: nand: check nand_mtd_to_devnum() argument

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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 <dario.binacchi@amarulasolutions.com>
Reviewed-by: Michael Trimarchi <michael@amarulasolutions.com>
Link: https://lore.kernel.org/all/20231102113829.58852-1-dario.binacchi@amarulasolutions.com
This commit is contained in:
Dario Binacchi
2023-11-02 12:38:22 +01:00
parent 6b3d175928
commit cbfff3b123
1 changed files with 4 additions and 1 deletions
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5
drivers/mtd/nand/raw/nand.c
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@@ -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;
}