Alter the behavior of sys/kern/subr_bus.c:device_print_child()

	- device_print_child() either lets the BUS_PRINT_CHILD
	  method produce the entire device announcement message or
	  it prints "foo0: not found\n"

Alter sys/kern/subr_bus.c:bus_generic_print_child() to take on
the previous behavior of device_print_child() (printing the
"foo0: <FooDevice 1.1>" bit of the announce message.)

Provide bus_print_child_header() and bus_print_child_footer()
to actually print the output for bus_generic_print_child().
These functions should be used whenever possible (unless you can
just use bus_generic_print_child())

The BUS_PRINT_CHILD method now returns int instead of void.

Modify everything else that defines or uses a BUS_PRINT_CHILD
method to comply with the above changes.

	- Devices are 'on' a bus, not 'at' it.
	- If a custom BUS_PRINT_CHILD method does the same thing
	  as bus_generic_print_child(), use bus_generic_print_child()
	- Use device_get_nameunit() instead of both
	  device_get_name() and device_get_unit()
	- All BUS_PRINT_CHILD methods return the number of
	  characters output.

Reviewed by: dfr, peter

4 files changed, 35 insertions, 23 deletions

diff --git a/sys/alpha/tlsb/gbus.c b/sys/alpha/tlsb/gbus.c
index 2d4ad30..4213df6 100644
--- a/sys/alpha/tlsb/gbus.c
+++ b/sys/alpha/tlsb/gbus.c
@@ -78,7 +78,7 @@ static devclass_t gbus_devclass;
  * Device methods
  */
 static int gbus_probe(device_t dev);
-static void gbus_print_child(device_t dev, device_t child);
+static int gbus_print_child(device_t dev, device_t child);
 static int gbus_read_ivar(device_t dev, device_t child, int which, u_long *result);;
 
 static device_method_t gbus_methods[] = {
@@ -128,14 +128,17 @@ gbus_probe(device_t dev)
 	return 0;
 }
 
-static void
+static int
 gbus_print_child(device_t bus, device_t dev)
 {
 	struct gbus_device* gdev = DEVTOGBUS(dev);
+	int retval = 0;
+
+	retval += bus_print_child_header(bus, dev);
+	retval += printf(" on %s offset 0x%x\n", device_get_nameunit(bus),
+			 gdev->gd_offset);
 
-	printf(" at %s%d offset 0x%x",
-	       device_get_name(bus), device_get_unit(bus),
-	       gdev->gd_offset);
+	return (retval);
 }
 
 static int
diff --git a/sys/alpha/tlsb/kftxx.c b/sys/alpha/tlsb/kftxx.c
index bfcd2e0..889f97d 100644
--- a/sys/alpha/tlsb/kftxx.c
+++ b/sys/alpha/tlsb/kftxx.c
@@ -1,4 +1,4 @@
-/* $Id: kftxx.c,v 1.4 1998/11/15 18:25:16 dfr Exp $ */
+/* $Id: kftxx.c,v 1.5 1999/05/08 21:58:53 dfr Exp $ */
 /* $NetBSD: kftxx.c,v 1.9 1998/05/14 00:01:32 thorpej Exp $ */
 
 /*
@@ -75,7 +75,7 @@ static devclass_t kft_devclass;
  * Device methods
  */
 static int kft_probe(device_t dev);
-static void kft_print_child(device_t dev, device_t child);
+static int kft_print_child(device_t dev, device_t child);
 static int kft_read_ivar(device_t dev, device_t child, int which, u_long *result);;
 
 static device_method_t kft_methods[] = {
@@ -151,14 +151,17 @@ kft_probe(device_t dev)
 	return 0;
 }
 
-static void
+static int
 kft_print_child(device_t bus, device_t dev)
 {
 	struct kft_device *kd = (struct kft_device*) device_get_ivars(dev);
+	int retval = 0;
+
+	retval += bus_print_child_header(bus, dev);
+	retval += printf(" on %s hose %d\n", device_get_nameunit(bus),
+			 kd->kd_hosenum);
 
-	printf(" at %s%d hose %d",
-	       device_get_name(bus), device_get_unit(bus),
-	       kd->kd_hosenum);
+	return (retval);
 }
 
 static int
diff --git a/sys/alpha/tlsb/tlsb.c b/sys/alpha/tlsb/tlsb.c
index f1097b2..8463ab1 100644
--- a/sys/alpha/tlsb/tlsb.c
+++ b/sys/alpha/tlsb/tlsb.c
@@ -93,7 +93,7 @@ static devclass_t		tlsb_devclass;
  * Device methods
  */
 static int tlsb_probe(device_t dev);
-static void tlsb_print_child(device_t dev, device_t child);
+static int tlsb_print_child(device_t dev, device_t child);
 static int tlsb_read_ivar(device_t dev, device_t child, int which, u_long* result);
 static int tlsb_setup_intr(device_t dev, device_t child,
 			   struct resource *irq, int flags,
@@ -230,15 +230,17 @@ tlsb_probe(device_t dev)
 	return 0;
 }
 
-static void
+static int
 tlsb_print_child(device_t dev, device_t child)
 {
 	struct tlsb_device* tdev = DEVTOTLSB(child);
+	int retval = 0;
+
+	retval += bus_print_child_header(dev, child);
+	retval += printf(" at %s node %d\n", device_get_nameunit(dev),
+			 tdev->td_node);
 
-	printf(" at %s%d node %d",
-	       device_get_name(dev),
-	       device_get_unit(dev),
-	       tdev->td_node);
+	return (retval);
 }
 
 static int
diff --git a/sys/alpha/tlsb/zs_tlsb.c b/sys/alpha/tlsb/zs_tlsb.c
index 55171a4..337706d 100644
--- a/sys/alpha/tlsb/zs_tlsb.c
+++ b/sys/alpha/tlsb/zs_tlsb.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: zs_tlsb.c,v 1.13 1999/05/30 16:50:54 phk Exp $
+ *	$Id: zs_tlsb.c,v 1.14 1999/07/04 14:58:04 phk Exp $
  */
 /*
  * This driver is a hopeless hack to get the SimOS console working.  A real
@@ -405,7 +405,7 @@ struct zsc_softc {
 
 static int zsc_tlsb_probe(device_t dev);
 static int zsc_tlsb_attach(device_t dev);
-static void zsc_tlsb_print_child(device_t dev, device_t child);
+static int zsc_tlsb_print_child(device_t dev, device_t child);
 static driver_intr_t zsc_tlsb_intr;
 
 
@@ -485,12 +485,16 @@ zsc_tlsb_attach(device_t dev)
 	return 0;
 }
 
-static void
+static int
 zsc_tlsb_print_child(device_t bus, device_t dev)
 {
-	printf(" at %s%d channel %c",
-	       device_get_name(bus), device_get_unit(bus),
-	       'A' + (device_get_unit(dev) & 1));
+	int retval = 0;
+
+	retval += bus_print_child_header(bus, dev);
+	retval += printf(" on %s channel %c\n", device_get_nameunit(bus),
+			 'A' + (device_get_unit(dev) & 1));
+
+	return (retval);
 }
 
 static void