sparc/vio: make remove callback return void

The driver core ignores the return value of struct bus_type::remove()
because there is only little that can be done. To simplify the quest to
make this function return void, let struct vio_driver::remove() return
void, too. All users already unconditionally return 0, this commit makes
it obvious that returning an error code is a bad idea and should prevent
that future driver authors consider returning an error code.

Note there are two nominally different implementations for a vio bus:
one in arch/sparc/kernel/vio.c and the other in
arch/powerpc/platforms/pseries/vio.c. This patch only addresses the
former.

Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20210505201449.195627-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 6 deletions

diff --git a/arch/sparc/kernel/ds.c b/arch/sparc/kernel/ds.c
index 522e5b51050c..4a5bdb0df779 100644
--- a/arch/sparc/kernel/ds.c
+++ b/arch/sparc/kernel/ds.c
@@ -1236,11 +1236,6 @@ out_err:
 	return err;
 }
 
-static int ds_remove(struct vio_dev *vdev)
-{
-	return 0;
-}
-
 static const struct vio_device_id ds_match[] = {
 	{
 		.type = "domain-services-port",
@@ -1251,7 +1246,6 @@ static const struct vio_device_id ds_match[] = {
 static struct vio_driver ds_driver = {
 	.id_table	= ds_match,
 	.probe		= ds_probe,
-	.remove		= ds_remove,
 	.name		= "ds",
 };