mtd: rawnand: meson: check return value of devm_kasprintf()

[ Upstream commit 5a985960a4dd041c21dbe9956958c1633d2da706 ]

devm_kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful by
checking the pointer validity.

Fixes: 1e4d3ba66888 ("mtd: rawnand: meson: fix the clock")
Signed-off-by: Yi Yang <yiyang13@huawei.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20231019065548.318443-1-yiyang13@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/mtd/nand/raw/meson_nand.c b/drivers/mtd/nand/raw/meson_nand.c
index ac4947f..0aeac8c 100644 (file)
--- a/drivers/mtd/nand/raw/meson_nand.c
+++ b/drivers/mtd/nand/raw/meson_nand.c
@@ -1021,6 +1021,9 @@ static int meson_nfc_clk_init(struct meson_nfc *nfc)
        init.name = devm_kasprintf(nfc->dev,
                                   GFP_KERNEL, "%s#div",
                                   dev_name(nfc->dev));
+       if (!init.name)
+               return -ENOMEM;
+
        init.ops = &clk_divider_ops;
        nfc_divider_parent_data[0].fw_name = "device";
        init.parent_data = nfc_divider_parent_data;