[PATCH 5.15 158/691] mtd: powernv: Add check devm_kasprintf() returned value

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

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

From: Charles Han <hanchunchao@xxxxxxxxxx>

[ Upstream commit 395999829880a106bb95f0ce34e6e4c2b43c6a5d ]

devm_kasprintf() can return a NULL pointer on failure but this
returned value is not checked.

Fixes: acfe63ec1c59 ("mtd: Convert to using %pOFn instead of device_node.name")
Signed-off-by: Charles Han <hanchunchao@xxxxxxxxxx>
Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Link: https://lore.kernel.org/linux-mtd/20240828092427.128177-1-hanchunchao@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/mtd/devices/powernv_flash.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mtd/devices/powernv_flash.c b/drivers/mtd/devices/powernv_flash.c
index 6950a87648151..1277ca677becf 100644
--- a/drivers/mtd/devices/powernv_flash.c
+++ b/drivers/mtd/devices/powernv_flash.c
@@ -207,6 +207,9 @@ static int powernv_flash_set_driver_info(struct device *dev,
 	 * get them
 	 */
 	mtd->name = devm_kasprintf(dev, GFP_KERNEL, "%pOFP", dev->of_node);
+	if (!mtd->name)
+		return -ENOMEM;
+
 	mtd->type = MTD_NORFLASH;
 	mtd->flags = MTD_WRITEABLE;
 	mtd->size = size;
-- 
2.43.0







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