media: i2c: tvp5150: check return value of devm_kasprintf()

[ Upstream commit 26ce7054d804be73935b9268d6e0ecf2fbbc8aef ]

devm_kasprintf() returns a pointer to dynamically allocated memory.
Pointer could be NULL in case allocation fails. Check pointer validity.
Identified with coccinelle (kmerr.cocci script).

Fixes: 0556f1d580d4 ("media: tvp5150: add input source selection of_graph support")
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c
index 859f1cb2fa7446b2df255409b37ded90ff8bbabe..84f87c016f9b5f3ed78842d1f8204e4276de1c67 100644 (file)
--- a/drivers/media/i2c/tvp5150.c
+++ b/drivers/media/i2c/tvp5150.c
@@ -2068,6 +2068,10 @@ static int tvp5150_parse_dt(struct tvp5150 *decoder, struct device_node *np)
                tvpc->ent.name = devm_kasprintf(dev, GFP_KERNEL, "%s %s",
                                                v4l2c->name, v4l2c->label ?
                                                v4l2c->label : "");
+               if (!tvpc->ent.name) {
+                       ret = -ENOMEM;
+                       goto err_free;
+               }
        }
 
        ep_np = of_graph_get_endpoint_by_regs(np, TVP5150_PAD_VID_OUT, 0);