[PATCH v2 18/22] pinctrl: Probe pinctrl devices on demand

[Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>]

When looking up a pin controller through its firmware node, probe it if
it hasn't already.

The goal is to reduce deferred probes to a minimum, as it makes it very
cumbersome to find out why a device failed to probe, and can introduce
very big delays in when a critical device is probed.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>
---

Changes in v2: None

 drivers/pinctrl/devicetree.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pinctrl/devicetree.c b/drivers/pinctrl/devicetree.c
index fe04e748dfe4..490860f6374e 100644
--- a/drivers/pinctrl/devicetree.c
+++ b/drivers/pinctrl/devicetree.c
@@ -112,6 +112,7 @@ static int dt_to_map_one_config(struct pinctrl *p, const char *statename,
 
 	/* Find the pin controller containing np_config */
 	np_pctldev = of_node_get(np_config);
+	fwnode_ensure_device(&np_pctldev->fwnode);
 	for (;;) {
 		np_pctldev = of_get_next_parent(np_pctldev);
 		if (!np_pctldev || of_node_is_root(np_pctldev)) {
-- 
2.4.3

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