[PATCH 4.14 017/104] mtd: nand: qcom: Add a NULL check for devm_kasprintf()

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Fabio Estevam <fabio.este...@nxp.com>

commit 069f05346d01e7298939f16533953cdf52370be3 upstream.

devm_kasprintf() may fail, so we should better add a NULL check
and propagate an error on failure.

Signed-off-by: Fabio Estevam <fabio.este...@nxp.com>
Signed-off-by: Boris Brezillon <boris.brezil...@free-electrons.com>
Signed-off-by: Amit Pundir <amit.pun...@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/mtd/nand/qcom_nandc.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/mtd/nand/qcom_nandc.c
+++ b/drivers/mtd/nand/qcom_nandc.c
@@ -2544,6 +2544,9 @@ static int qcom_nand_host_init(struct qc
 
        nand_set_flash_node(chip, dn);
        mtd->name = devm_kasprintf(dev, GFP_KERNEL, "qcom_nand.%d", host->cs);
+       if (!mtd->name)
+               return -ENOMEM;
+
        mtd->owner = THIS_MODULE;
        mtd->dev.parent = dev;