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Message-Id: <20170217233152.31715-2-dmitry.torokhov@gmail.com>
Date: Fri, 17 Feb 2017 15:31:51 -0800
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: Michael Hennerich <michael.hennerich@...log.com>
Cc: linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [RFC/RFT PATCH 2/3] Input: ad7879 - use more devm interfaces
gpiochip_add now has a managed version, and we can remove sysfs attribute
group via devm_add_action_or_reset (at least until we have devm version of
sysfs_crreate_group). This allows us to get rid of ad7879_remove().
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
drivers/input/touchscreen/ad7879-i2c.c | 12 -------
drivers/input/touchscreen/ad7879-spi.c | 10 ------
drivers/input/touchscreen/ad7879.c | 60 ++++++++++++----------------------
drivers/input/touchscreen/ad7879.h | 1 -
4 files changed, 21 insertions(+), 62 deletions(-)
diff --git a/drivers/input/touchscreen/ad7879-i2c.c b/drivers/input/touchscreen/ad7879-i2c.c
index 25aa9b89a6aa..23e04e9f2dad 100644
--- a/drivers/input/touchscreen/ad7879-i2c.c
+++ b/drivers/input/touchscreen/ad7879-i2c.c
@@ -45,17 +45,6 @@ static int ad7879_i2c_probe(struct i2c_client *client,
if (IS_ERR(ts))
return PTR_ERR(ts);
- i2c_set_clientdata(client, ts);
-
- return 0;
-}
-
-static int ad7879_i2c_remove(struct i2c_client *client)
-{
- struct ad7879 *ts = i2c_get_clientdata(client);
-
- ad7879_remove(ts);
-
return 0;
}
@@ -81,7 +70,6 @@ static struct i2c_driver ad7879_i2c_driver = {
.of_match_table = of_match_ptr(ad7879_i2c_dt_ids),
},
.probe = ad7879_i2c_probe,
- .remove = ad7879_i2c_remove,
.id_table = ad7879_id,
};
diff --git a/drivers/input/touchscreen/ad7879-spi.c b/drivers/input/touchscreen/ad7879-spi.c
index e9535aacaabf..f2c06b5a75d0 100644
--- a/drivers/input/touchscreen/ad7879-spi.c
+++ b/drivers/input/touchscreen/ad7879-spi.c
@@ -62,15 +62,6 @@ static int ad7879_spi_probe(struct spi_device *spi)
return 0;
}
-static int ad7879_spi_remove(struct spi_device *spi)
-{
- struct ad7879 *ts = spi_get_drvdata(spi);
-
- ad7879_remove(ts);
-
- return 0;
-}
-
#ifdef CONFIG_OF
static const struct of_device_id ad7879_spi_dt_ids[] = {
{ .compatible = "adi,ad7879", },
@@ -86,7 +77,6 @@ static struct spi_driver ad7879_spi_driver = {
.of_match_table = of_match_ptr(ad7879_spi_dt_ids),
},
.probe = ad7879_spi_probe,
- .remove = ad7879_spi_remove,
};
module_spi_driver(ad7879_spi_driver);
diff --git a/drivers/input/touchscreen/ad7879.c b/drivers/input/touchscreen/ad7879.c
index 6465db7a1b20..b7ab7f9767ca 100644
--- a/drivers/input/touchscreen/ad7879.c
+++ b/drivers/input/touchscreen/ad7879.c
@@ -458,7 +458,7 @@ static int ad7879_gpio_add(struct ad7879 *ts,
mutex_init(&ts->mutex);
- if (pdata->gpio_export) {
+ if (pdata && pdata->gpio_export) {
ts->gc.direction_input = ad7879_gpio_direction_input;
ts->gc.direction_output = ad7879_gpio_direction_output;
ts->gc.get = ad7879_gpio_get_value;
@@ -470,7 +470,7 @@ static int ad7879_gpio_add(struct ad7879 *ts,
ts->gc.owner = THIS_MODULE;
ts->gc.parent = ts->dev;
- ret = gpiochip_add_data(&ts->gc, ts);
+ ret = devm_gpiochip_add_data(ts->dev, &ts->gc, ts);
if (ret)
dev_err(ts->dev, "failed to register gpio %d\n",
ts->gc.base);
@@ -478,25 +478,12 @@ static int ad7879_gpio_add(struct ad7879 *ts,
return ret;
}
-
-static void ad7879_gpio_remove(struct ad7879 *ts)
-{
- const struct ad7879_platform_data *pdata = dev_get_platdata(ts->dev);
-
- if (pdata && pdata->gpio_export)
- gpiochip_remove(&ts->gc);
-
-}
#else
-static inline int ad7879_gpio_add(struct ad7879 *ts,
- const struct ad7879_platform_data *pdata)
+static int ad7879_gpio_add(struct ad7879 *ts,
+ const struct ad7879_platform_data *pdata)
{
return 0;
}
-
-static inline void ad7879_gpio_remove(struct ad7879 *ts)
-{
-}
#endif
static int ad7879_parse_dt(struct device *dev, struct ad7879 *ts)
@@ -525,6 +512,13 @@ static int ad7879_parse_dt(struct device *dev, struct ad7879 *ts)
return 0;
}
+static void ad7879_cleanup_sysfs(void *_ts)
+{
+ struct ad7879 *ts = _ts;
+
+ sysfs_remove_group(&ts->dev->kobj, &ad7879_attr_group);
+}
+
struct ad7879 *ad7879_probe(struct device *dev, struct regmap *regmap,
int irq, u16 bustype, u8 devid)
{
@@ -660,36 +654,24 @@ struct ad7879 *ad7879_probe(struct device *dev, struct regmap *regmap,
err = sysfs_create_group(&dev->kobj, &ad7879_attr_group);
if (err)
- goto err_out;
+ return ERR_PTR(err);
- if (pdata) {
- err = ad7879_gpio_add(ts, pdata);
- if (err)
- goto err_remove_attr;
- }
+ err = devm_add_action_or_reset(dev, ad7879_cleanup_sysfs, ts);
+ if (err)
+ return ERR_PTR(err);
- err = input_register_device(input_dev);
+ err = ad7879_gpio_add(ts, pdata);
if (err)
- goto err_remove_gpio;
+ return ERR_PTR(err);
- return ts;
+ err = input_register_device(input_dev);
+ if (err)
+ return ERR_PTR(err);
-err_remove_gpio:
- ad7879_gpio_remove(ts);
-err_remove_attr:
- sysfs_remove_group(&dev->kobj, &ad7879_attr_group);
-err_out:
- return ERR_PTR(err);
+ return 0;
}
EXPORT_SYMBOL(ad7879_probe);
-void ad7879_remove(struct ad7879 *ts)
-{
- ad7879_gpio_remove(ts);
- sysfs_remove_group(&ts->dev->kobj, &ad7879_attr_group);
-}
-EXPORT_SYMBOL(ad7879_remove);
-
MODULE_AUTHOR("Michael Hennerich <hennerich@...ckfin.uclinux.org>");
MODULE_DESCRIPTION("AD7879(-1) touchscreen Driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/ad7879.h b/drivers/input/touchscreen/ad7879.h
index 1131f8aa118b..d3d2e9dc31ae 100644
--- a/drivers/input/touchscreen/ad7879.h
+++ b/drivers/input/touchscreen/ad7879.h
@@ -19,6 +19,5 @@ extern const struct dev_pm_ops ad7879_pm_ops;
struct ad7879 *ad7879_probe(struct device *dev, struct regmap *regmap,
int irq, u16 bustype, u8 devid);
-void ad7879_remove(struct ad7879 *);
#endif
--
2.11.0.483.g087da7b7c-goog
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