74 	struct device_node *trng = NULL;  in ppc4xx_trng_probe()  local
78 	/* Find the TRNG device node and map it */  in ppc4xx_trng_probe()
79 	trng = of_find_matching_node(NULL, ppc4xx_trng_match);  in ppc4xx_trng_probe()
80 	if (!trng || !of_device_is_available(trng)) {  in ppc4xx_trng_probe()
81 		of_node_put(trng);  in ppc4xx_trng_probe()
85 	dev->trng_base = of_iomap(trng, 0);  in ppc4xx_trng_probe()
86 	of_node_put(trng);  in ppc4xx_trng_probe()
98 	core_dev->trng = rng;  in ppc4xx_trng_probe()
101 	err = devm_hwrng_register(core_dev->device, core_dev->trng);  in ppc4xx_trng_probe()
114 	core_dev->trng = NULL;  in ppc4xx_trng_probe()
119 	if (core_dev && core_dev->trng) {  in ppc4xx_trng_remove()
122 		devm_hwrng_unregister(core_dev->device, core_dev->trng);  in ppc4xx_trng_remove()
125 		kfree(core_dev->trng);  in ppc4xx_trng_remove()