Function unmap_memory

util/cbmem/devmem_drv.c:118–129

Returns 0 on success, < 0 on error. mapping is cleared if successful. */

/* Returns 0 on success, < 0 on error. mapping is cleared if successful. */
static int unmap_memory(struct mapping *mapping)
{
	if (mapping->virt == NULL)
		return -1;

	munmap(mapping->virt, mapping->virt_size);
	mapping->virt = NULL;
	mapping->offset = 0;
	mapping->virt_size = 0;

	return 0;
}

/*
 * Some architectures map /dev/mem memory in a way that doesn't support