It will cause null-ptr-deref if platform_get_resource() returns NULL, we need check the return value. Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx> --- drivers/mtd/nand/raw/tmio_nand.c | 3 +++ 1 file changed, 3 insertions(+) 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; -- 2.25.1
