On 三, 2016-09-07 at 10:05 +0200, Mason wrote:

On 21/07/2016 12:43, Grzegorz Jaszczyk wrote:

quoted

There is no need to implement subroutine for suspend since there is
no
data to store before suspending.

Signed-off-by: Grzegorz Jaszczyk <redacted>
---
 drivers/thermal/armada_thermal.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/thermal/armada_thermal.c

b/drivers/thermal/armada_thermal.c
index ae75328..65f9838 100644

--- a/drivers/thermal/armada_thermal.c
+++ b/drivers/thermal/armada_thermal.c

@@ -304,12 +304,26 @@ static int armada_thermal_exit(struct

platform_device *pdev)
 	return 0;
 }
 
+static int armada_thermal_resume(struct device *dev)
+{
+	struct thermal_zone_device *thermal =
+		dev_get_drvdata(dev);
+	struct armada_thermal_priv *priv = thermal->devdata;
+
+	priv->data->init_sensor(to_platform_device(dev), priv);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(armada_thermal_pm_ops, NULL,
armada_thermal_resume);
+
 static struct platform_driver armada_thermal_driver = {
 	.probe = armada_thermal_probe,
 	.remove = armada_thermal_exit,
 	.driver = {
 		.name = "armada_thermal",
 		.of_match_table = armada_thermal_id_table,
+		.pm = &armada_thermal_pm_ops,
 	},
 };

gcc might warn about 'armada_thermal_resume' defined but not used
when CONFIG_PM_SLEEP is not defined, I think?

(I have a similar patch, Arnd suggested using __maybe_unused tag.)

right.
Grzegorz, you can use this one as a reference. https://patchwork.kernel
.org/patch/9318621/

thanks,
rui

Regards.

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