Merge remote-tracking branch 'spi/topic/of' into spi-next

drivers/spi/spi.c

@@ -3398,20 +3398,23 @@ EXPORT_SYMBOL_GPL(spi_write_then_read);
 
 /*-------------------------------------------------------------------------*/
 
-#if IS_ENABLED(CONFIG_OF_DYNAMIC)
+#if IS_ENABLED(CONFIG_OF)
 static int __spi_of_device_match(struct device *dev, void *data)
 {
 	return dev->of_node == data;
 }
 
 /* must call put_device() when done with returned spi_device device */
-static struct spi_device *of_find_spi_device_by_node(struct device_node *node)
+struct spi_device *of_find_spi_device_by_node(struct device_node *node)
 {
 	struct device *dev = bus_find_device(&spi_bus_type, NULL, node,
 						__spi_of_device_match);
 	return dev ? to_spi_device(dev) : NULL;
 }
+EXPORT_SYMBOL_GPL(of_find_spi_device_by_node);
+#endif /* IS_ENABLED(CONFIG_OF) */
 
+#if IS_ENABLED(CONFIG_OF_DYNAMIC)
 static int __spi_of_controller_match(struct device *dev, const void *data)
 {
 	return dev->of_node == data;

include/linux/spi/spi.h

@@ -1272,7 +1272,6 @@ spi_register_board_info(struct spi_board_info const *info, unsigned n)
 	{ return 0; }
 #endif
 
-
 /* If you're hotplugging an adapter with devices (parport, usb, etc)
  * use spi_new_device() to describe each device.  You can also call
  * spi_unregister_device() to start making that device vanish, but
@@ -1304,6 +1303,22 @@ spi_transfer_is_last(struct spi_controller *ctlr, struct spi_transfer *xfer)
 	return list_is_last(&xfer->transfer_list, &ctlr->cur_msg->transfers);
 }
 
+/* OF support code */
+#if IS_ENABLED(CONFIG_OF)
+
+/* must call put_device() when done with returned spi_device device */
+extern struct spi_device *
+of_find_spi_device_by_node(struct device_node *node);
+
+#else
+
+static inline struct spi_device *
+of_find_spi_device_by_node(struct device_node *node)
+{
+	return NULL;
+}
+
+#endif /* IS_ENABLED(CONFIG_OF) */
 
 /* Compatibility layer */
 #define spi_master			spi_controller