From: Leonard Crestez <leonard.crestez@nxp.com>
To: MyungJoo Ham <myungjoo.ham@samsung.com>,
Kyungmin Park <kyungmin.park@samsung.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: "Chanwoo Choi" <cw00.choi@samsung.com>,
"Matthias Kaehlcke" <mka@chromium.org>,
"Artur Świgoń" <a.swigon@partner.samsung.com>,
"Saravana Kannan" <saravanak@google.com>,
"Krzysztof Kozlowski" <krzk@kernel.org>,
"Alexandre Bailon" <abailon@baylibre.com>,
"Georgi Djakov" <georgi.djakov@linaro.org>,
"Abel Vesa" <abel.vesa@nxp.com>, "Jacky Bai" <ping.bai@nxp.com>,
"Viresh Kumar" <viresh.kumar@linaro.org>,
"NXP Linux Team" <linux-imx@nxp.com>,
linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH v10 03/11] PM / devfreq: Split device_register usage
Date: Thu, 31 Oct 2019 23:34:20 +0200 [thread overview]
Message-ID: <369bcb0a87fb6fffa595e22fd085c6802a7c0281.1572556786.git.leonard.crestez@nxp.com> (raw)
In-Reply-To: <cover.1572556786.git.leonard.crestez@nxp.com>
In-Reply-To: <cover.1572556786.git.leonard.crestez@nxp.com>
Splitting device_register into device_initialize and device_add allows
devm-based allocations to be performed before device_add.
It also simplifies error paths in devfreq_add_device: just call
put_device instead of duplicating parts of devfreq_dev_release.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
---
drivers/devfreq/devfreq.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 715127f1cda5..603681f8cd73 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -639,10 +639,11 @@ struct devfreq *devfreq_add_device(struct device *dev,
mutex_init(&devfreq->lock);
mutex_lock(&devfreq->lock);
devfreq->dev.parent = dev;
devfreq->dev.class = devfreq_class;
devfreq->dev.release = devfreq_dev_release;
+ device_initialize(&devfreq->dev);
INIT_LIST_HEAD(&devfreq->node);
devfreq->profile = profile;
strncpy(devfreq->governor_name, governor_name, DEVFREQ_NAME_LEN);
devfreq->previous_freq = profile->initial_freq;
devfreq->last_status.current_frequency = profile->initial_freq;
@@ -676,15 +677,14 @@ struct devfreq *devfreq_add_device(struct device *dev,
devfreq->suspend_freq = dev_pm_opp_get_suspend_opp_freq(dev);
atomic_set(&devfreq->suspend_count, 0);
dev_set_name(&devfreq->dev, "devfreq%d",
atomic_inc_return(&devfreq_no));
- err = device_register(&devfreq->dev);
+ err = device_add(&devfreq->dev);
if (err) {
mutex_unlock(&devfreq->lock);
- put_device(&devfreq->dev);
- goto err_out;
+ goto err_dev;
}
devfreq->trans_table = devm_kzalloc(&devfreq->dev,
array3_size(sizeof(unsigned int),
devfreq->profile->max_state,
@@ -739,13 +739,13 @@ struct devfreq *devfreq_add_device(struct device *dev,
err_init:
mutex_unlock(&devfreq_list_lock);
err_devfreq:
devfreq_remove_device(devfreq);
- devfreq = NULL;
+ return ERR_PTR(err);
err_dev:
- kfree(devfreq);
+ put_device(&devfreq->dev);
err_out:
return ERR_PTR(err);
}
EXPORT_SYMBOL(devfreq_add_device);
--
2.17.1
next prev parent reply other threads:[~2019-10-31 21:34 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-31 21:34 [PATCH v10] PM / devfreq: Add dev_pm_qos support Leonard Crestez
2019-10-31 21:34 ` [PATCH v10 01/11] PM / devfreq: Fix devfreq_notifier_call returning errno Leonard Crestez
2019-11-11 5:55 ` Chanwoo Choi
2019-10-31 21:34 ` [PATCH v10 02/11] PM / devfreq: Set scaling_max_freq to max on OPP notifier error Leonard Crestez
2019-11-11 5:55 ` Chanwoo Choi
2019-10-31 21:34 ` Leonard Crestez [this message]
2019-10-31 21:34 ` [PATCH v10 04/11] PM / devfreq: Move more initialization before registration Leonard Crestez
2019-10-31 21:34 ` [PATCH v10 05/11] PM / devfreq: Don't take lock in devfreq_add_device Leonard Crestez
2019-10-31 21:34 ` [PATCH v10 06/11] PM / QoS: Reorder pm_qos/freq_qos/dev_pm_qos structs Leonard Crestez
2019-11-01 2:13 ` Chanwoo Choi
2019-11-01 14:45 ` Leonard Crestez
2019-11-11 5:52 ` Chanwoo Choi
2019-10-31 21:34 ` [PATCH v10 07/11] PM / QoS: Export _freq_qos_apply Leonard Crestez
2019-10-31 21:34 ` [PATCH v10 08/11] PM / QoS: Restore DEV_PM_QOS_MIN/MAX_FREQUENCY Leonard Crestez
2019-10-31 21:34 ` [PATCH v10 09/11] PM / devfreq: Introduce get_freq_range helper Leonard Crestez
2019-11-11 5:56 ` Chanwoo Choi
2019-11-11 14:37 ` Leonard Crestez
2019-10-31 21:34 ` [PATCH v10 10/11] PM / devfreq: Add PM QoS support Leonard Crestez
2019-10-31 21:34 ` [PATCH v10 11/11] PM / devfreq: Use PM QoS for sysfs min/max_freq Leonard Crestez
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