From 069b2e2cd7ef5b42e1ab8ee991347f9dbf9f51d1 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Fri, 17 Feb 2017 09:29:40 -0800 Subject: [PATCH] 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_create_group). This allows us to get rid of ad7879_remove(). Reviewed-by: Michael Hennerich Tested-by: Michael Hennerich Signed-off-by: Dmitry Torokhov --- 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 25aa9b8..23e04e9 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 8fb8ccd..b995891 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 6465db7..b7ab7f9 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 "); MODULE_DESCRIPTION("AD7879(-1) touchscreen Driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/input/touchscreen/ad7879.h b/drivers/input/touchscreen/ad7879.h index 1131f8a..d3d2e9d 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 -- 2.7.4