[PATCH 4.9 020/107] mtd: nand: qcom: Add a NULL check for devm_kasprintf()

From: Greg Kroah-Hartman
Date: Tue Aug 14 2018 - 13:39:58 EST


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

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

From: Fabio Estevam <fabio.estevam@xxxxxxx>

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@xxxxxxx>
Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Amit Pundir <amit.pundir@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
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
@@ -2008,6 +2008,9 @@ 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;