Thermal zone names must follow certain rules imposed by the framework.
They are limited in length and shall not have any hyphen '-'.
This is done in a separate function for future use in another location.
Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
---
drivers/thermal/armada_thermal.c | 36 +++++++++++++++++++++++++++++++++++-
1 file changed, 35 insertions(+), 1 deletion(-)
diff --git a/drivers/thermal/armada_thermal.c b/drivers/thermal/armada_thermal.c
index 4c275ec10ac5..077e8e562306 100644
--- a/drivers/thermal/armada_thermal.c
+++ b/drivers/thermal/armada_thermal.c
@@ -70,6 +70,7 @@ struct armada_thermal_priv {
void __iomem *status;
void __iomem *control0;
void __iomem *control1;
+ char zone_name[THERMAL_NAME_LENGTH];
struct armada_thermal_data *data;
};
@@ -353,6 +354,36 @@ static const struct of_device_id armada_thermal_id_table[] = {
};
MODULE_DEVICE_TABLE(of, armada_thermal_id_table);
+static void armada_set_sane_name(struct platform_device *pdev,
+ struct armada_thermal_priv *priv)
+{
+ const char *name = dev_name(&pdev->dev);
+ char *insane_char;
+
+ if (strlen(name) > THERMAL_NAME_LENGTH) {
+ /*
+ * When inside a system controller, the device name has the
+ * form: f06f8000.system-controller:ap-thermal so stripping
+ * after the ':' should give us a shorter but meaningful name.
+ */
+ name = strrchr(name, ':');
+ if (!name)
+ name = "armada_thermal";
+ else
+ name++;
+ }
+
+ /* Save the name locally */
+ strncpy(priv->zone_name, name, THERMAL_NAME_LENGTH);
+
+ /* Then check there are no '-' or hwmon core will complain */
+ do {
+ insane_char = strpbrk(priv->zone_name, "-");
+ if (insane_char)
+ *insane_char = '_';
+ } while (insane_char);
+}
+
static int armada_thermal_probe(struct platform_device *pdev)
{
void __iomem *control = NULL;
@@ -381,6 +412,9 @@ static int armada_thermal_probe(struct platform_device *pdev)
priv->data = (struct armada_thermal_data *)match->data;
+ /* Ensure device name is correct for the thermal core */
+ armada_set_sane_name(pdev, priv);
+
/*
* Legacy DT bindings only described "control1" register (also referred
* as "control MSB" on old documentation). New bindings cover
@@ -402,7 +436,7 @@ static int armada_thermal_probe(struct platform_device *pdev)
priv->data->init_sensor(pdev, priv);
- thermal = thermal_zone_device_register(dev_name(&pdev->dev), 0, 0, priv,
+ thermal = thermal_zone_device_register(priv->zone_name, 0, 0, priv,
&ops, NULL, 0, 0);
if (IS_ERR(thermal)) {
dev_err(&pdev->dev,
--
2.14.1
--
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