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iio: pressure: icp10100: Balance runtime pm + use pm_runtime_resume_and_get()

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The devm_ handled runtime pm disable calls pm_runtime_put_sync_suspend()
which isn't balancing a matching get call.  It isn't a bug as such,
because the runtime pm core doesn't decrement the reference count below
zero, but it is missleading so let's drop it.

Using pm_runtime_resume_and_get() new call makes it easy to handle
failures in resume as it doesn't hold a reference count if it exits
with an error.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/20210516162103.1332291-7-jic23@kernel.org
This commit is contained in:
Jonathan Cameron 2021-05-16 17:21:03 +01:00
parent c2f89f4ccd
commit 64f9dc6a68
1 changed files with 3 additions and 2 deletions
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5
drivers/iio/pressure/icp10100.c
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@ -250,7 +250,9 @@ static int icp10100_get_measures(struct icp10100_state *st,
__be16 measures[3];
int ret;
pm_runtime_get_sync(&st->client->dev);
ret = pm_runtime_resume_and_get(&st->client->dev);
if (ret < 0)
return ret;
mutex_lock(&st->lock);
cmd = &icp10100_cmd_measure[st->mode];
@ -525,7 +527,6 @@ static void icp10100_pm_disable(void *data)
{
struct device *dev = data;
pm_runtime_put_sync_suspend(dev);
pm_runtime_disable(dev);
}