From: Maxim Kochetkov <fido_max@xxxxxxxx>
commit e71e6dbe96ac80ac2aebe71a6a942e7bd60e7596 upstream.
To stop conversion ads1015_set_power_state() function call unimplemented
function __pm_runtime_suspend() from pm_runtime_put_autosuspend()
if CONFIG_PM is not set.
In case of CONFIG_PM is not set: __pm_runtime_suspend() returns -ENOSYS,
so ads1015_read_raw() failed because ads1015_set_power_state() returns an
error.
If CONFIG_PM is disabled, there is no need to start/stop conversion.
Fix it by adding return 0 function variant if CONFIG_PM is not set.
Signed-off-by: Maxim Kochetkov <fido_max@xxxxxxxx>
Fixes: ecc24e72f437 ("iio: adc: Add TI ADS1015 ADC driver support")
Tested-by: Maxim Kiselev <bigunclemax@xxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Cc: <Stable@xxxxxxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/iio/adc/ti-ads1015.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/drivers/iio/adc/ti-ads1015.c
+++ b/drivers/iio/adc/ti-ads1015.c
@@ -316,6 +316,7 @@ static const struct iio_chan_spec ads111
IIO_CHAN_SOFT_TIMESTAMP(ADS1015_TIMESTAMP),
};
+#ifdef CONFIG_PM
static int ads1015_set_power_state(struct ads1015_data *data, bool on)
{
int ret;
@@ -333,6 +334,15 @@ static int ads1015_set_power_state(struc
return ret < 0 ? ret : 0;
}
+#else /* !CONFIG_PM */
+
+static int ads1015_set_power_state(struct ads1015_data *data, bool on)
+{
+ return 0;
+}
+
+#endif /* !CONFIG_PM */
+
static
int ads1015_get_adc_result(struct ads1015_data *data, int chan, int *val)
{
