driver-core: Add device node pointer to struct device

Currently, platforms using CONFIG_OF add a 'struct device_node *of_node'
to dev->archdata.  However, with CONFIG_OF becoming generic for all
architectures, it makes sense for commonality to move it out of archdata
and into struct device proper.

This patch adds a struct device_node *of_node member to struct device
and updates all locations which currently write the device_node pointer
into archdata to also update dev->of_node.  Subsequent patches will
modify callers to use the archdata location and ultimately remove
the archdata member entirely.

Signed-off-by: Grant Likely <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
CC: Michal Simek <[email protected]>
CC: Greg Kroah-Hartman <[email protected]>
CC: Benjamin Herrenschmidt <[email protected]>
CC: "David S. Miller" <[email protected]>
CC: Stephen Rothwell <[email protected]>
CC: Jeremy Kerr <[email protected]>
CC: [email protected]
CC: [email protected]
CC: [email protected]
CC: [email protected]

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index 82237176a2a3..d6708da114ee 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -1230,7 +1230,8 @@ struct vio_dev *vio_register_device_node(struct device_node *of_node)
 		if (unit_address != NULL)
 			viodev->unit_address = *unit_address;
 	}
-	viodev->dev.archdata.of_node = of_node_get(of_node);
+	viodev->dev.of_node = of_node_get(of_node);
+	viodev->dev.archdata.of_node = viodev->dev.of_node;
 
 	if (firmware_has_feature(FW_FEATURE_CMO))
 		vio_cmo_set_dma_ops(viodev);