rapidio: add shutdown notification for RapidIO devices

Add bus-specific callback to stop RapidIO devices during a system shutdown. Signed-off-by: Alexandre Bounine <[email protected]> Cc: Matt Porter <[email protected]> Cc: Aurelien Jacquiot <[email protected]> Cc: Andre van Herk <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
ambv · Mar 22, 2016 · 83dc2cb · 83dc2cb
1 parent dbe74af
commit 83dc2cb
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diff --git a/drivers/rapidio/rio-driver.c b/drivers/rapidio/rio-driver.c
@@ -131,6 +131,17 @@ static int rio_device_remove(struct device *dev)
 	return 0;
 }
 
+static void rio_device_shutdown(struct device *dev)
+{
+	struct rio_dev *rdev = to_rio_dev(dev);
+	struct rio_driver *rdrv = rdev->driver;
+
+	dev_dbg(dev, "RIO: %s\n", __func__);
+
+	if (rdrv && rdrv->shutdown)
+		rdrv->shutdown(rdev);
+}
+
 /**
  *  rio_register_driver - register a new RIO driver
  *  @rdrv: the RIO driver structure to register
@@ -229,6 +240,7 @@ struct bus_type rio_bus_type = {
 	.bus_groups = rio_bus_groups,
 	.probe = rio_device_probe,
 	.remove = rio_device_remove,
+	.shutdown = rio_device_shutdown,
 	.uevent	= rio_uevent,
 };
 

diff --git a/include/linux/rio.h b/include/linux/rio.h
@@ -423,6 +423,7 @@ struct rio_ops {
  * @id_table: RIO device ids to be associated with this driver
  * @probe: RIO device inserted
  * @remove: RIO device removed
+ * @shutdown: shutdown notification callback
  * @suspend: RIO device suspended
  * @resume: RIO device awakened
  * @enable_wake: RIO device enable wake event
@@ -437,6 +438,7 @@ struct rio_driver {
 	const struct rio_device_id *id_table;
 	int (*probe) (struct rio_dev * dev, const struct rio_device_id * id);
 	void (*remove) (struct rio_dev * dev);
+	void (*shutdown)(struct rio_dev *dev);
 	int (*suspend) (struct rio_dev * dev, u32 state);
 	int (*resume) (struct rio_dev * dev);
 	int (*enable_wake) (struct rio_dev * dev, u32 state, int enable);