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

From	Stefan Agner <stefan@agner.ch>
Newsgroups	linux.kernel
Subject	[PATCH 4/5] mfd: rn5t618: register power off callback optionally
Date	2016-06-05 02:20 +0200
Message-ID	<rGtXk-7Xg-7@gated-at.bofh.it> (permalink)
References	<rGtXk-7Xg-3@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>
---
 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 7607ced..d9b4d40 100644
--- a/drivers/mfd/rn5t618.c
+++ b/drivers/mfd/rn5t618.c
@@ -103,9 +103,13 @@ 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_err(&i2c->dev, "Failed to set poweroff capability, already defined\n");
+		}
 	}
 
 	return 0;
-- 
2.8.3

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[PATCH 4/5] mfd: rn5t618: register power off callback optionally Stefan Agner <stefan@agner.ch> - 2016-06-05 02:20 +0200

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