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iio: proximity: srf04: Use pm_runtime_resume_and_get() and handle error 

Previously this driver used pm_runtime_sync_get() and did not handle any
errors that occurred.  Moving to the new pm_runtime_resume_and_get() +
handle errors.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Andreas Klinger <ak@it-klinger.de>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/20210509113354.660190-26-jic23@kernel.org
This commit is contained in:
Jonathan Cameron 2021-05-09 12:33:51 +01:00
parent db9c6c2ec4
commit 9009a732a8
1 changed files with 5 additions and 3 deletions
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8
drivers/iio/proximity/srf04.c
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@ -100,9 +100,11 @@ static int srf04_read(struct srf04_data *data)
u64 dt_ns;
u32 time_ns, distance_mm;
if (data->gpiod_power)
pm_runtime_get_sync(data->dev);
if (data->gpiod_power) {
ret = pm_runtime_resume_and_get(data->dev);
if (ret < 0)
return ret;
}
/*
* just one read-echo-cycle can take place at a time
* ==> lock against concurrent reading calls