Nothing in the kernel (this driver) is using the callback to
read ohms directly. We always read a voltage and convert it
to a resistance. Drop this callback.
Cc: Peter Rosin <peda@xxxxxxxxxx>
Cc: Chris Lesiak <chris.lesiak@xxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
drivers/hwmon/ntc_thermistor.c | 21 ++-------------------
1 file changed, 2 insertions(+), 19 deletions(-)
diff --git a/drivers/hwmon/ntc_thermistor.c b/drivers/hwmon/ntc_thermistor.c
index 034ef55d0706..8a78e899fa12 100644
--- a/drivers/hwmon/ntc_thermistor.c
+++ b/drivers/hwmon/ntc_thermistor.c
@@ -28,10 +28,6 @@ enum ntc_thermistor_type {
struct ntc_thermistor_platform_data {
/*
- * One (not both) of read_uV and read_ohm should be provided and only
- * one of the two should be provided.
- * Both functions should return negative value for an error case.
- *
* pullup_uV, pullup_ohm, pulldown_ohm, and connect are required to use
* read_uV()
*
@@ -50,8 +46,6 @@ struct ntc_thermistor_platform_data {
unsigned int pulldown_ohm;
enum { NTC_CONNECTED_POSITIVE, NTC_CONNECTED_GROUND } connect;
struct iio_channel *chan;
-
- int (*read_ohm)(void);
};
struct ntc_compensation {
@@ -600,9 +594,6 @@ static int ntc_thermistor_get_ohm(struct ntc_data *data)
{
int read_uv;
- if (data->pdata->read_ohm)
- return data->pdata->read_ohm();
-
if (data->pdata->read_uv) {
read_uv = data->pdata->read_uv(data->pdata);
if (read_uv < 0)
@@ -690,19 +681,11 @@ static int ntc_thermistor_probe(struct platform_device *pdev)
return -ENODEV;
}
- /* Either one of the two is required. */
- if (!pdata->read_uv && !pdata->read_ohm) {
- dev_err(dev,
- "Both read_uv and read_ohm missing. Need either one of the two.\n");
+ if (!pdata->read_uv) {
+ dev_err(dev, "read_uv missing\n");
return -EINVAL;
}
- if (pdata->read_uv && pdata->read_ohm) {
- dev_warn(dev,
- "Only one of read_uv and read_ohm is needed; ignoring read_uv.\n");
- pdata->read_uv = NULL;
- }
-
if (pdata->read_uv && (pdata->pullup_uv == 0 ||
(pdata->pullup_ohm == 0 && pdata->connect ==
NTC_CONNECTED_GROUND) ||
--
2.31.1
