From 64f9dc6a68002fc3f1890cb90312a2ace19df99e Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 16 May 2021 17:21:03 +0100 Subject: [PATCH] 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 Cc: Jean-Baptiste Maneyrol Reviewed-by: Mauro Carvalho Chehab Link: https://lore.kernel.org/r/20210516162103.1332291-7-jic23@kernel.org --- drivers/iio/pressure/icp10100.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/iio/pressure/icp10100.c b/drivers/iio/pressure/icp10100.c index 48759fc..af4621e 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); } -- 2.7.4