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Subject[RFC PATCH 2/7] extconn: Clean-up few drivers by using managed work init
Few drivers implement remove call-back only for ensuring a delayed
work gets cancelled prior driver removal. Clean-up these by switching
to use devm_delayed_work_autocancel() instead.

This change is compile-tested only. All testing is appreciated.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
---
drivers/extcon/extcon-gpio.c | 14 +++-----------
drivers/extcon/extcon-intel-int3496.c | 15 +++------------
drivers/extcon/extcon-palmas.c | 16 +++++-----------
drivers/extcon/extcon-qcom-spmi-misc.c | 16 +++++-----------
4 files changed, 16 insertions(+), 45 deletions(-)

diff --git a/drivers/extcon/extcon-gpio.c b/drivers/extcon/extcon-gpio.c
index c211222f5d0c..7a45610e6c59 100644
--- a/drivers/extcon/extcon-gpio.c
+++ b/drivers/extcon/extcon-gpio.c
@@ -112,7 +112,9 @@ static int gpio_extcon_probe(struct platform_device *pdev)
if (ret < 0)
return ret;

- INIT_DELAYED_WORK(&data->work, gpio_extcon_work);
+ ret = devm_delayed_work_autocancel(dev, &data->work, gpio_extcon_work);
+ if (ret)
+ return ret;

/*
* Request the interrupt of gpio to detect whether external connector
@@ -131,15 +133,6 @@ static int gpio_extcon_probe(struct platform_device *pdev)
return 0;
}

-static int gpio_extcon_remove(struct platform_device *pdev)
-{
- struct gpio_extcon_data *data = platform_get_drvdata(pdev);
-
- cancel_delayed_work_sync(&data->work);
-
- return 0;
-}
-
#ifdef CONFIG_PM_SLEEP
static int gpio_extcon_resume(struct device *dev)
{
@@ -158,7 +151,6 @@ static SIMPLE_DEV_PM_OPS(gpio_extcon_pm_ops, NULL, gpio_extcon_resume);

static struct platform_driver gpio_extcon_driver = {
.probe = gpio_extcon_probe,
- .remove = gpio_extcon_remove,
.driver = {
.name = "extcon-gpio",
.pm = &gpio_extcon_pm_ops,
diff --git a/drivers/extcon/extcon-intel-int3496.c b/drivers/extcon/extcon-intel-int3496.c
index 80c9abcc3f97..508a63dae3b4 100644
--- a/drivers/extcon/extcon-intel-int3496.c
+++ b/drivers/extcon/extcon-intel-int3496.c
@@ -101,7 +101,9 @@ static int int3496_probe(struct platform_device *pdev)
return -ENOMEM;

data->dev = dev;
- INIT_DELAYED_WORK(&data->work, int3496_do_usb_id);
+ ret = devm_delayed_work_autocancel(dev, &data->work, int3496_do_usb_id);
+ if (ret)
+ return ret;

data->gpio_usb_id = devm_gpiod_get(dev, "id", GPIOD_IN);
if (IS_ERR(data->gpio_usb_id)) {
@@ -155,16 +157,6 @@ static int int3496_probe(struct platform_device *pdev)
return 0;
}

-static int int3496_remove(struct platform_device *pdev)
-{
- struct int3496_data *data = platform_get_drvdata(pdev);
-
- devm_free_irq(&pdev->dev, data->usb_id_irq, data);
- cancel_delayed_work_sync(&data->work);
-
- return 0;
-}
-
static const struct acpi_device_id int3496_acpi_match[] = {
{ "INT3496" },
{ }
@@ -177,7 +169,6 @@ static struct platform_driver int3496_driver = {
.acpi_match_table = int3496_acpi_match,
},
.probe = int3496_probe,
- .remove = int3496_remove,
};

module_platform_driver(int3496_driver);
diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
index a2852bcc5f0d..1c48094bcf68 100644
--- a/drivers/extcon/extcon-palmas.c
+++ b/drivers/extcon/extcon-palmas.c
@@ -237,7 +237,11 @@ static int palmas_usb_probe(struct platform_device *pdev)
palmas_usb->sw_debounce_jiffies = msecs_to_jiffies(debounce);
}

- INIT_DELAYED_WORK(&palmas_usb->wq_detectid, palmas_gpio_id_detect);
+ status = devm_delayed_work_autocancel(&pdev->dev,
+ &palmas_usb->wq_detectid,
+ palmas_gpio_id_detect);
+ if (status)
+ return status;

palmas->usb = palmas_usb;
palmas_usb->palmas = palmas;
@@ -359,15 +363,6 @@ static int palmas_usb_probe(struct platform_device *pdev)
return 0;
}

-static int palmas_usb_remove(struct platform_device *pdev)
-{
- struct palmas_usb *palmas_usb = platform_get_drvdata(pdev);
-
- cancel_delayed_work_sync(&palmas_usb->wq_detectid);
-
- return 0;
-}
-
#ifdef CONFIG_PM_SLEEP
static int palmas_usb_suspend(struct device *dev)
{
@@ -422,7 +417,6 @@ static const struct of_device_id of_palmas_match_tbl[] = {

static struct platform_driver palmas_usb_driver = {
.probe = palmas_usb_probe,
- .remove = palmas_usb_remove,
.driver = {
.name = "palmas-usb",
.of_match_table = of_palmas_match_tbl,
diff --git a/drivers/extcon/extcon-qcom-spmi-misc.c b/drivers/extcon/extcon-qcom-spmi-misc.c
index 6b836ae62176..82a7498951d2 100644
--- a/drivers/extcon/extcon-qcom-spmi-misc.c
+++ b/drivers/extcon/extcon-qcom-spmi-misc.c
@@ -80,7 +80,11 @@ static int qcom_usb_extcon_probe(struct platform_device *pdev)
}

info->debounce_jiffies = msecs_to_jiffies(USB_ID_DEBOUNCE_MS);
- INIT_DELAYED_WORK(&info->wq_detcable, qcom_usb_extcon_detect_cable);
+
+ ret = devm_delayed_work_autocancel(dev, &info->wq_detcable,
+ qcom_usb_extcon_detect_cable);
+ if (ret)
+ return ret;

info->irq = platform_get_irq_byname(pdev, "usb_id");
if (info->irq < 0)
@@ -105,15 +109,6 @@ static int qcom_usb_extcon_probe(struct platform_device *pdev)
return 0;
}

-static int qcom_usb_extcon_remove(struct platform_device *pdev)
-{
- struct qcom_usb_extcon_info *info = platform_get_drvdata(pdev);
-
- cancel_delayed_work_sync(&info->wq_detcable);
-
- return 0;
-}
-
#ifdef CONFIG_PM_SLEEP
static int qcom_usb_extcon_suspend(struct device *dev)
{
@@ -149,7 +144,6 @@ MODULE_DEVICE_TABLE(of, qcom_usb_extcon_dt_match);

static struct platform_driver qcom_usb_extcon_driver = {
.probe = qcom_usb_extcon_probe,
- .remove = qcom_usb_extcon_remove,
.driver = {
.name = "extcon-pm8941-misc",
.pm = &qcom_usb_extcon_pm_ops,
--
2.25.4

--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND

~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]

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