--- zzzz-none-000/linux-4.9.279/drivers/gpio/gpiolib.c	2021-08-08 06:38:54.000000000 +0000
+++ puma7-atom-6591-750/linux-4.9.279/drivers/gpio/gpiolib.c	2023-02-08 11:43:42.000000000 +0000
@@ -1179,6 +1179,7 @@
 	if (chip->ngpio == 0) {
 		chip_err(chip, "tried to insert a GPIO chip with zero lines\n");
 		status = -EINVAL;
+	    printk("gpio base valid %d  max pin valid %d", gpio_is_valid(base), gpio_is_valid(base + chip->ngpio - 1));
 		goto err_free_descs;
 	}