diff options
author | Leonard Crestez <leonard.crestez@nxp.com> | 2019-11-14 01:21:31 +0200 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-09 10:17:50 +0100 |
commit | b5f565ba27cbca21432d2cb8e2a2da905715ab7e (patch) | |
tree | b6af650f71eb868e35628c18f99910ed54d163ea /drivers/devfreq | |
parent | eb9723e635d9d3cd5ea76d599933de710b9251c2 (diff) |
PM / devfreq: Don't fail devfreq_dev_release if not in list
[ Upstream commit 42a6b25e67df6ee6675e8d1eaf18065bd73328ba ]
Right now devfreq_dev_release will print a warning and abort the rest of
the cleanup if the devfreq instance is not part of the global
devfreq_list. But this is a valid scenario, for example it can happen if
the governor can't be found or on any other init error that happens
after device_register.
Initialize devfreq->node to an empty list head in devfreq_add_device so
that list_del becomes a safe noop inside devfreq_dev_release and we can
continue the rest of the cleanup.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/devfreq')
-rw-r--r-- | drivers/devfreq/devfreq.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index dc9c0032c97b..7b510ef1d0dd 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -484,11 +484,6 @@ static void devfreq_dev_release(struct device *dev) struct devfreq *devfreq = to_devfreq(dev); mutex_lock(&devfreq_list_lock); - if (IS_ERR(find_device_devfreq(devfreq->dev.parent))) { - mutex_unlock(&devfreq_list_lock); - dev_warn(&devfreq->dev, "releasing devfreq which doesn't exist\n"); - return; - } list_del(&devfreq->node); mutex_unlock(&devfreq_list_lock); @@ -547,6 +542,7 @@ struct devfreq *devfreq_add_device(struct device *dev, devfreq->dev.parent = dev; devfreq->dev.class = devfreq_class; devfreq->dev.release = devfreq_dev_release; + INIT_LIST_HEAD(&devfreq->node); devfreq->profile = profile; strncpy(devfreq->governor_name, governor_name, DEVFREQ_NAME_LEN); devfreq->previous_freq = profile->initial_freq; |