mtd: powernv: Add check devm_kasprintf() returned value

[ 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@inspur.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20240828092427.128177-1-hanchunchao@inspur.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/mtd/devices/powernv_flash.c b/drivers/mtd/devices/powernv_flash.c
index 0b757d9ba2f6ba03957bd6fe501ef3bf00e872b6..0ab64a1cec09e172bfd3d10f3f225f4a18d8efb1 100644 (file)
--- a/drivers/mtd/devices/powernv_flash.c
+++ b/drivers/mtd/devices/powernv_flash.c
@@ -204,6 +204,9 @@ 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;