Commit 264da512 authored by Jonathan Cameron's avatar Jonathan Cameron

iio: magn: bmc150: Balance runtime pm + use pm_runtime_resume_and_get()

probe() error paths after runtime pm is enabled, should disable it.
remove() should not call pm_runtime_put_noidle() as there is no
matching get() to have raised the reference count.  This case
has no affect a the runtime pm core protects against going negative.

Whilst here use pm_runtime_resume_and_get() to tidy things up a little.
coccicheck script didn't get this one due to complex code structure so
found by inspection.
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/20210509113354.660190-12-jic23@kernel.org
parent 9a20795c
...@@ -262,7 +262,7 @@ static int bmc150_magn_set_power_state(struct bmc150_magn_data *data, bool on) ...@@ -262,7 +262,7 @@ static int bmc150_magn_set_power_state(struct bmc150_magn_data *data, bool on)
int ret; int ret;
if (on) { if (on) {
ret = pm_runtime_get_sync(data->dev); ret = pm_runtime_resume_and_get(data->dev);
} else { } else {
pm_runtime_mark_last_busy(data->dev); pm_runtime_mark_last_busy(data->dev);
ret = pm_runtime_put_autosuspend(data->dev); ret = pm_runtime_put_autosuspend(data->dev);
...@@ -271,9 +271,6 @@ static int bmc150_magn_set_power_state(struct bmc150_magn_data *data, bool on) ...@@ -271,9 +271,6 @@ static int bmc150_magn_set_power_state(struct bmc150_magn_data *data, bool on)
if (ret < 0) { if (ret < 0) {
dev_err(data->dev, dev_err(data->dev,
"failed to change power state to %d\n", on); "failed to change power state to %d\n", on);
if (on)
pm_runtime_put_noidle(data->dev);
return ret; return ret;
} }
#endif #endif
...@@ -963,12 +960,14 @@ int bmc150_magn_probe(struct device *dev, struct regmap *regmap, ...@@ -963,12 +960,14 @@ int bmc150_magn_probe(struct device *dev, struct regmap *regmap,
ret = iio_device_register(indio_dev); ret = iio_device_register(indio_dev);
if (ret < 0) { if (ret < 0) {
dev_err(dev, "unable to register iio device\n"); dev_err(dev, "unable to register iio device\n");
goto err_buffer_cleanup; goto err_disable_runtime_pm;
} }
dev_dbg(dev, "Registered device %s\n", name); dev_dbg(dev, "Registered device %s\n", name);
return 0; return 0;
err_disable_runtime_pm:
pm_runtime_disable(dev);
err_buffer_cleanup: err_buffer_cleanup:
iio_triggered_buffer_cleanup(indio_dev); iio_triggered_buffer_cleanup(indio_dev);
err_free_irq: err_free_irq:
...@@ -992,7 +991,6 @@ int bmc150_magn_remove(struct device *dev) ...@@ -992,7 +991,6 @@ int bmc150_magn_remove(struct device *dev)
pm_runtime_disable(dev); pm_runtime_disable(dev);
pm_runtime_set_suspended(dev); pm_runtime_set_suspended(dev);
pm_runtime_put_noidle(dev);
iio_triggered_buffer_cleanup(indio_dev); iio_triggered_buffer_cleanup(indio_dev);
......
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