Re: [PATCH V6 net-next 11/11] ptp: Add a driver for InES time stamping IP core.

+static int ines_clock_init(struct ines_clock *clock, struct device_node *node,
+			   void __iomem *addr)
+{
+	unsigned long port_addr;
+	struct ines_port *port;
+	int i, j;
+
+	INIT_LIST_HEAD(&clock->list);
+	clock->node = node;
+	clock->base = addr;
+	clock->regs = clock->base;
+
+	for (i = 0; i < INES_N_PORTS; i++) {
+		port = &clock->port[i];
+		port_addr = (unsigned long) clock->base +
+			INES_PORT_OFFSET + i * INES_PORT_SIZE;
+		port->regs = (struct ines_port_registers *) port_addr;
+		port->clock = clock;
+		port->index = i;
+		INIT_DELAYED_WORK(&port->ts_work, ines_txtstamp_work);
+		spin_lock_init(&port->lock);
+		INIT_LIST_HEAD(&port->events);
+		INIT_LIST_HEAD(&port->pool);
+		for (j = 0; j < INES_MAX_EVENTS; j++)
+			list_add(&port->pool_data[j].list, &port->pool);
+	}
+
+	ines_write32(clock, 0xBEEF, test);
+	ines_write32(clock, 0xBEEF, test2);
+
+	pr_debug("ID      0x%x\n", ines_read32(clock, id));
+	pr_debug("TEST    0x%x\n", ines_read32(clock, test));
+	pr_debug("VERSION 0x%x\n", ines_read32(clock, version));
+	pr_debug("TEST2   0x%x\n", ines_read32(clock, test2));
+

Hi Richard

Using pr_ functions is frowned upon. You have a device, since this is
a platform driver, please use dev_debug() etc.

+	for (i = 0; i < INES_N_PORTS; i++) {
+		port = &clock->port[i];
+		ines_write32(port, PORT_CONF, port_conf);
+	}
+
+	return 0;
+}
+
+static void ines_dump_ts(char *label, struct ines_timestamp *ts)
+{
+#ifdef DEBUG
+	pr_err("%s timestamp, tag=0x%04hx t=%llu.%9llu c=0x%llx p=%hu s=%hu\n",
+	       label, ts->tag, ts->sec, ts->nsec,
+	       ts->clkid, ts->portnum, ts->seqid);
+#endif

DEBUG using pr_err() is a bit unusual. dev_dbg() would be normal.

+static int ines_ptp_ctrl_probe(struct platform_device *pld)
+{
+	struct ines_clock *clock;
+	struct resource *res;
+	void __iomem *addr;
+	int err = 0;
+
+	res = platform_get_resource(pld, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(&pld->dev, "missing memory resource\n");
+		return -EINVAL;
+	}
+	addr = devm_ioremap_resource(&pld->dev, res);
+	if (IS_ERR(addr)) {
+		err = PTR_ERR(addr);
+		goto out;
+	}
+	clock = kzalloc(sizeof(*clock), GFP_KERNEL);

Do the different memory life cycles allow devm_ to be used here?