From: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>
There is no need to manually track the runtime PM status in the driver.
The pm_runtime_force_suspend() and pm_runtime_force_resume() functions
already call pm_runtime_status_suspended() to check the runtime PM state.
Additionally, avoid calling pm_runtime_put_autosuspend() during the
suspend/resume path, as this would decrease the usage counter of a
potential user that had the ADC open before the suspend/resume cycle.
Fixes: cb164d7c1526 ("iio: adc: rzg2l_adc: Add suspend/resume support")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>
---
Changes in v2:
- none
drivers/iio/adc/rzg2l_adc.c | 29 ++++++++---------------------
1 file changed, 8 insertions(+), 21 deletions(-)
diff --git a/drivers/iio/adc/rzg2l_adc.c b/drivers/iio/adc/rzg2l_adc.c
index 4742a727a80c..99cb73347b18 100644
--- a/drivers/iio/adc/rzg2l_adc.c
+++ b/drivers/iio/adc/rzg2l_adc.c
@@ -89,7 +89,6 @@ struct rzg2l_adc {
struct mutex lock;
int irq;
u16 last_val[RZG2L_ADC_MAX_CHANNELS];
- bool was_rpm_active;
};
/**
@@ -580,14 +579,9 @@ static int rzg2l_adc_suspend(struct device *dev)
};
int ret;
- if (pm_runtime_suspended(dev)) {
- adc->was_rpm_active = false;
- } else {
- ret = pm_runtime_force_suspend(dev);
- if (ret)
- return ret;
- adc->was_rpm_active = true;
- }
+ ret = pm_runtime_force_suspend(dev);
+ if (ret)
+ return ret;
ret = reset_control_bulk_assert(ARRAY_SIZE(resets), resets);
if (ret)
@@ -596,9 +590,7 @@ static int rzg2l_adc_suspend(struct device *dev)
return 0;
rpm_restore:
- if (adc->was_rpm_active)
- pm_runtime_force_resume(dev);
-
+ pm_runtime_force_resume(dev);
return ret;
}
@@ -616,11 +608,9 @@ static int rzg2l_adc_resume(struct device *dev)
if (ret)
return ret;
- if (adc->was_rpm_active) {
- ret = pm_runtime_force_resume(dev);
- if (ret)
- goto resets_restore;
- }
+ ret = pm_runtime_force_resume(dev);
+ if (ret)
+ goto resets_restore;
ret = rzg2l_adc_hw_init(dev, adc);
if (ret)
@@ -629,10 +619,7 @@ static int rzg2l_adc_resume(struct device *dev)
return 0;
rpm_restore:
- if (adc->was_rpm_active) {
- pm_runtime_mark_last_busy(dev);
- pm_runtime_put_autosuspend(dev);
- }
+ pm_runtime_force_suspend(dev);
resets_restore:
reset_control_bulk_assert(ARRAY_SIZE(resets), resets);
return ret;
--
2.43.0
