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iio: adc: rcar-gyroadc: Use pm_runtime_resume_and_get() and check in probe() 

1 instance found using coccicheck script under review at:
https://lore.kernel.org/lkml/20210427141946.2478411-1-Julia.Lawall@inria.fr/
The other instance changed did not check for failure of the
pm_runtime_get_sync() so that is added.

Note the remaining pm_runtime_get_sync() call is left alone because it
is not obvious what to do on failure to power up in remove()

This is a prequel to taking a closer look at the runtime pm in IIO drivers
in general.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Marek Vasut <marek.vasut@gmail.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/20210509113354.660190-29-jic23@kernel.org
This commit is contained in:
Jonathan Cameron 2021-05-09 12:33:54 +01:00
parent 66e748ae7f
commit db9c6c2ec4
1 changed files with 7 additions and 8 deletions
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15
drivers/iio/adc/rcar-gyroadc.c
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@ -162,18 +162,13 @@ static const struct iio_chan_spec rcar_gyroadc_iio_channels_3[] = {
static int rcar_gyroadc_set_power(struct rcar_gyroadc *priv, bool on)
{
struct device *dev = priv->dev;
int ret;
if (on) {
ret = pm_runtime_get_sync(dev);
if (ret < 0)
pm_runtime_put_noidle(dev);
return pm_runtime_resume_and_get(dev);
} else {
pm_runtime_mark_last_busy(dev);
ret = pm_runtime_put_autosuspend(dev);
return pm_runtime_put_autosuspend(dev);
}
return ret;
}
static int rcar_gyroadc_read_raw(struct iio_dev *indio_dev,
@ -535,7 +530,10 @@ static int rcar_gyroadc_probe(struct platform_device *pdev)
pm_runtime_use_autosuspend(dev);
pm_runtime_enable(dev);
pm_runtime_get_sync(dev);
ret = pm_runtime_resume_and_get(dev);
if (ret)
goto err_power_up;
rcar_gyroadc_hw_init(priv);
rcar_gyroadc_hw_start(priv);
@ -552,6 +550,7 @@ static int rcar_gyroadc_probe(struct platform_device *pdev)
err_iio_device_register:
rcar_gyroadc_hw_stop(priv);
pm_runtime_put_sync(dev);
err_power_up:
pm_runtime_disable(dev);
pm_runtime_set_suspended(dev);
clk_disable_unprepare(priv->clk);