firewire: introduce fw_driver.probe and .remove methods

FireWire upper layer drivers are converted from generic
    struct driver.probe() and .remove()
to bus-specific
    struct fw_driver.probe() and .remove().

The new .probe() adds a const struct ieee1394_device_id *id argument,
indicating the entry in the driver's device identifiers table which
matched the fw_unit to be probed.  This new argument is used by the
snd-firewire-speakers driver to look up device-specific parameters and
methods.  There is at least one other FireWire audio driver currently in
development in which this will be useful too.

The new .remove() drops the unused error return code.

Although all in-tree drivers are being converted to the new methods,
support for the old methods is left in place in this commit.  This
allows public developer trees to merge this commit and then move to the
new fw_driver methods.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Acked-by: Clemens Ladisch <clemens@ladisch.de> (for sound/firewire/)
Cc: Peter Hurley <peter@hurleysoftware.com> (for drivers/staging/fwserial/)

1 files changed, 24 insertions, 26 deletions

diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c
index 815b0fcbe91..6b895986dc2 100644
--- a/drivers/firewire/net.c
+++ b/drivers/firewire/net.c
@@ -1440,9 +1440,9 @@ static int fwnet_add_peer(struct fwnet_device *dev,
 	return 0;
 }
 
-static int fwnet_probe(struct device *_dev)
+static int fwnet_probe(struct fw_unit *unit,
+		       const struct ieee1394_device_id *id)
 {
-	struct fw_unit *unit = fw_unit(_dev);
 	struct fw_device *device = fw_parent_device(unit);
 	struct fw_card *card = device->card;
 	struct net_device *net;
@@ -1526,6 +1526,24 @@ static int fwnet_probe(struct device *_dev)
 	return ret;
 }
 
+/*
+ * FIXME abort partially sent fragmented datagrams,
+ * discard partially received fragmented datagrams
+ */
+static void fwnet_update(struct fw_unit *unit)
+{
+	struct fw_device *device = fw_parent_device(unit);
+	struct fwnet_peer *peer = dev_get_drvdata(&unit->device);
+	int generation;
+
+	generation = device->generation;
+
+	spin_lock_irq(&peer->dev->lock);
+	peer->node_id    = device->node_id;
+	peer->generation = generation;
+	spin_unlock_irq(&peer->dev->lock);
+}
+
 static void fwnet_remove_peer(struct fwnet_peer *peer, struct fwnet_device *dev)
 {
 	struct fwnet_partial_datagram *pd, *pd_next;
@@ -1542,9 +1560,9 @@ static void fwnet_remove_peer(struct fwnet_peer *peer, struct fwnet_device *dev)
 	kfree(peer);
 }
 
-static int fwnet_remove(struct device *_dev)
+static void fwnet_remove(struct fw_unit *unit)
 {
-	struct fwnet_peer *peer = dev_get_drvdata(_dev);
+	struct fwnet_peer *peer = dev_get_drvdata(&unit->device);
 	struct fwnet_device *dev = peer->dev;
 	struct net_device *net;
 	int i;
@@ -1569,26 +1587,6 @@ static int fwnet_remove(struct device *_dev)
 	}
 
 	mutex_unlock(&fwnet_device_mutex);
-
-	return 0;
-}
-
-/*
- * FIXME abort partially sent fragmented datagrams,
- * discard partially received fragmented datagrams
- */
-static void fwnet_update(struct fw_unit *unit)
-{
-	struct fw_device *device = fw_parent_device(unit);
-	struct fwnet_peer *peer = dev_get_drvdata(&unit->device);
-	int generation;
-
-	generation = device->generation;
-
-	spin_lock_irq(&peer->dev->lock);
-	peer->node_id    = device->node_id;
-	peer->generation = generation;
-	spin_unlock_irq(&peer->dev->lock);
 }
 
 static const struct ieee1394_device_id fwnet_id_table[] = {
@@ -1614,10 +1612,10 @@ static struct fw_driver fwnet_driver = {
 		.owner  = THIS_MODULE,
 		.name   = KBUILD_MODNAME,
 		.bus    = &fw_bus_type,
-		.probe  = fwnet_probe,
-		.remove = fwnet_remove,
 	},
+	.probe    = fwnet_probe,
 	.update   = fwnet_update,
+	.remove   = fwnet_remove,
 	.id_table = fwnet_id_table,
 };