devres使用不同的内核模块提供了对应的devm_xxx接口,如下(不仅仅这些): MEM devm_kmalloc() devm_kzalloc() devm_kcalloc(...) devm_kmalloc_array() devm_kstrdup() devm_kfree() IIO devm_iio_device_alloc() devm_iio_device_free...() devm_
priv->ulpi_reset = devm_gpiod_get_optional(dev->parent, "reset", GPIOD_ACTIVE_LOW); /* property is optional, don't return error! */ if (priv->ulpi_reset) { /* Toggle ulpi to reset the phy. */ rc = dm_gpio_set_value(priv->ulpi_reset, 1); ...