net: dsa: vsc73xx: Add null pointer check to vsc73xx_gpio_probe

[ Upstream commit 776dac5 ] devm_kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure. Fixes: 05bd97f ("net: dsa: Add Vitesse VSC73xx DSA router driver") Signed-off-by: Kunwu Chan <[email protected]> Suggested-by: Jakub Kicinski <[email protected]> Reviewed-by: Simon Horman <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jakub Kicinski <[email protected]> Signed-off-by: Sasha Levin <[email protected]>
0lxb · Jan 25, 2024 · 91f9eca · 91f9eca
1 parent 1b500d5
commit 91f9eca
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/drivers/net/dsa/vitesse-vsc73xx-core.c b/drivers/net/dsa/vitesse-vsc73xx-core.c
@@ -1135,6 +1135,8 @@ static int vsc73xx_gpio_probe(struct vsc73xx *vsc)
 
 	vsc->gc.label = devm_kasprintf(vsc->dev, GFP_KERNEL, "VSC%04x",
 				       vsc->chipid);
+	if (!vsc->gc.label)
+		return -ENOMEM;
 	vsc->gc.ngpio = 4;
 	vsc->gc.owner = THIS_MODULE;
 	vsc->gc.parent = vsc->dev;