linux-kernel - [PATCH 18/21] pinctrl: Probe pinctrl devices on demand

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Message-Id: <1432565608-26036-19-git-send-email-tomeu.vizoso@collabora.com>
Date:	Mon, 25 May 2015 16:53:22 +0200
From:	Tomeu Vizoso <tomeu.vizoso@...labora.com>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Stéphane Marchesin 
	<stephane.marchesin@...il.com>,
	Thierry Reding <thierry.reding@...il.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Alexander Holler <holler@...oftware.de>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Tomeu Vizoso <tomeu.vizoso@...labora.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 18/21] pinctrl: Probe pinctrl devices on demand

When looking up a pin controller through its DT node, ensure that the
corresponding device has been registered.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@...labora.com>
---
 drivers/pinctrl/devicetree.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pinctrl/devicetree.c b/drivers/pinctrl/devicetree.c
index 0bbf7d7..17231ea 100644
--- a/drivers/pinctrl/devicetree.c
+++ b/drivers/pinctrl/devicetree.c
@@ -18,6 +18,7 @@
 
 #include <linux/device.h>
 #include <linux/of.h>
+#include <linux/of_platform.h>
 #include <linux/pinctrl/pinctrl.h>
 #include <linux/slab.h>
 
@@ -118,6 +119,7 @@ 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);
+	of_platform_device_ensure(np_pctldev);
 	for (;;) {
 		np_pctldev = of_get_next_parent(np_pctldev);
 		if (!np_pctldev || of_node_is_root(np_pctldev)) {
-- 
2.4.1

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