[PATCH v4 4/5] mfd: rn5t618: register power off callback optionally
From: stefan@agner.ch (Stefan Agner)
Date: 2016-06-28 06:28:49
Also in:
linux-amlogic, linux-devicetree, lkml
Subsystem:
multifunction devices (mfd), the rest · Maintainers:
Lee Jones, Linus Torvalds
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 <redacted> --- 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