[PATCH 3/5] pinctrl: handle zero found dt pinconfig properties better

[Heiko Stübner]

This adds a shortcut when no valid pinconf properties are found
in the parsed dt node, to set the values immediately and return.

Suggested-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
Signed-off-by: Heiko Stuebner <heiko at sntech.de>
---
 drivers/pinctrl/pinconf-generic.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/pinctrl/pinconf-generic.c b/drivers/pinctrl/pinconf-generic.c
index dcf0371..ea9da17 100644
--- a/drivers/pinctrl/pinconf-generic.c
+++ b/drivers/pinctrl/pinconf-generic.c
@@ -208,6 +208,13 @@ int pinconf_generic_parse_dt_config(struct device_node *np,
 		ncfg++;
 	}
 
+	/* no configs found at all */
+	if (ncfg == 0) {
+		*configs = NULL;
+		*nconfigs = 0;
+		return 0;
+	}
+
 	/*
 	 * Now limit the number of configs to the real number of
 	 * found properties.
-- 
1.7.10.4