[PATCH v4 4/5] mfd: rn5t618: register power off callback optionally

From	Stefan Agner <stefan@agner.ch>
Newsgroups	linux.kernel
Subject	[PATCH v4 4/5] mfd: rn5t618: register power off callback optionally
Date	2016-06-28 08:30 +0200
Message-ID	<rOUGZ-39l-9@gated-at.bofh.it> (permalink)
References	<rOUGZ-39l-7@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Only register power off if the PMIC is defined as system power
controller (see Documentation/devicetree/bindings/power/
power-controller.txt).

Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
---
 drivers/mfd/rn5t618.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/mfd/rn5t618.c b/drivers/mfd/rn5t618.c
index c86160d..1831740 100644
--- a/drivers/mfd/rn5t618.c
+++ b/drivers/mfd/rn5t618.c
@@ -102,9 +102,13 @@ static int rn5t618_i2c_probe(struct i2c_client *i2c,
 		return ret;
 	}
 
-	if (!pm_power_off) {
-		rn5t618_pm_power_off = priv;
-		pm_power_off = rn5t618_power_off;
+	if (of_device_is_system_power_controller(i2c->dev.of_node)) {
+		if (!pm_power_off) {
+			rn5t618_pm_power_off = priv;
+			pm_power_off = rn5t618_power_off;
+		} else {
+			dev_warn(&i2c->dev, "Poweroff callback already assigned\n");
+		}
 	}
 
 	return 0;
-- 
2.8.3

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[PATCH v4 4/5] mfd: rn5t618: register power off callback optionally Stefan Agner <stefan@agner.ch> - 2016-06-28 08:30 +0200
  Re: [PATCH v4 4/5] mfd: rn5t618: register power off callback  optionally Lee Jones <lee.jones@linaro.org> - 2016-06-28 14:10 +0200

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