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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2021-05-16 19:21:03 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2021-06-16 16:53:13 +0300 |
| commit | 64f9dc6a68002fc3f1890cb90312a2ace19df99e (patch) | |
| tree | fb293b06a41a6d77fc925bdd7d0f58cf65d2b772 /drivers/iio | |
| parent | c2f89f4ccd7a155af2739300de712b8f96aa76a3 (diff) | |
| download | linux-64f9dc6a68002fc3f1890cb90312a2ace19df99e.tar.xz | |
iio: pressure: icp10100: Balance runtime pm + use pm_runtime_resume_and_get()
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
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/pressure/icp10100.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/iio/pressure/icp10100.c b/drivers/iio/pressure/icp10100.c index 48759fc4bf18..af4621eaa6b5 100644 --- a/drivers/iio/pressure/icp10100.c +++ b/drivers/iio/pressure/icp10100.c @@ -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); } |