From: Fabio Estevam <fabio.estevam@nxp.com>
Date: Fri, 5 Jan 2018 20:02:55 +0000 (-0200)
Subject: mtd: nand: qcom: Add a NULL check for devm_kasprintf()
X-Git-Tag: v4.14.63~93
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2424869e4cd1d2d08b0c23b709b116d48d1a42aa;p=platform%2Fkernel%2Flinux-rpi.git

mtd: nand: qcom: Add a NULL check for devm_kasprintf()

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.estevam@nxp.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/mtd/nand/qcom_nandc.c b/drivers/mtd/nand/qcom_nandc.c
index 3baddfc..b49ca02 100644
--- 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 qcom_nand_controller *nandc,
 
 	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;