HID: uclogic: Add NULL check in uclogic_input_configured()

[ Upstream commit bd07f75 ]

devm_kasprintf() returns NULL when memory allocation fails. Currently,
uclogic_input_configured() does not check for this case, which results
in a NULL pointer dereference.

Add NULL check after devm_kasprintf() to prevent this issue.

Fixes: dd613a4 ("HID: uclogic: Correct devm device reference for hidinput input_dev name")
Signed-off-by: Henry Martin <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>

Author: Henry Martin

drivers/hid/hid-uclogic-core.c

@@ -142,11 +142,12 @@ static int uclogic_input_configured(struct hid_device *hdev,
 			suffix = "System Control";
 			break;
 		}
-	}
-
-	if (suffix)
+	} else {
 		hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
 						 "%s %s", hdev->name, suffix);
+		if (!hi->input->name)
+			return -ENOMEM;
+	}
 
 	return 0;
 }