From 9b2152f96f4a243bdfb89027c0d920aa0af810e7 Mon Sep 17 00:00:00 2001 From: Yang Yingliang Date: Tue, 26 Apr 2022 16:49:13 +0800 Subject: mtd: rawnand: tmio: check return value after calling platform_get_resource() It will cause null-ptr-deref if platform_get_resource() returns NULL, we need check the return value. Signed-off-by: Yang Yingliang Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20220426084913.4021868-3-yangyingliang@huawei.com --- drivers/mtd/nand/raw/tmio_nand.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/raw/tmio_nand.c b/drivers/mtd/nand/raw/tmio_nand.c index de8e919d0ebe..8f1a42bf199c 100644 --- a/drivers/mtd/nand/raw/tmio_nand.c +++ b/drivers/mtd/nand/raw/tmio_nand.c @@ -390,6 +390,9 @@ static int tmio_probe(struct platform_device *dev) if (data == NULL) dev_warn(&dev->dev, "NULL platform data!\n"); + if (!ccr || !fcr) + return -EINVAL; + tmio = devm_kzalloc(&dev->dev, sizeof(*tmio), GFP_KERNEL); if (!tmio) return -ENOMEM; -- cgit v1.2.3