[PATCH v3 2/2] rtc: s5m: use devm_i2c_new_dummy_device()

From: Bartosz Golaszewski
Date: Thu Jan 07 2021 - 08:43:08 EST


From: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>

Use the managed variant of i2c_new_dummy_device() to shrink code and
remove the goto label. We can drop the remove callback now too.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>
---
v1 -> v2:
- remove the remove() callback

v2 -> v3:
- fix an error pointed out by the build robot

drivers/rtc/rtc-s5m.c | 34 ++++++++--------------------------
1 file changed, 8 insertions(+), 26 deletions(-)

diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c
index e0011d3cf61b..b492070afe6a 100644
--- a/drivers/rtc/rtc-s5m.c
+++ b/drivers/rtc/rtc-s5m.c
@@ -760,7 +760,8 @@ static int s5m_rtc_probe(struct platform_device *pdev)
return -ENODEV;
}

- info->i2c = i2c_new_dummy_device(s5m87xx->i2c->adapter, RTC_I2C_ADDR);
+ info->i2c = devm_i2c_new_dummy_device(&pdev->dev, s5m87xx->i2c->adapter,
+ RTC_I2C_ADDR);
if (IS_ERR(info->i2c)) {
dev_err(&pdev->dev, "Failed to allocate I2C for RTC\n");
return PTR_ERR(info->i2c);
@@ -768,10 +769,9 @@ static int s5m_rtc_probe(struct platform_device *pdev)

info->regmap = devm_regmap_init_i2c(info->i2c, regmap_cfg);
if (IS_ERR(info->regmap)) {
- ret = PTR_ERR(info->regmap);
dev_err(&pdev->dev, "Failed to allocate RTC register map: %d\n",
- ret);
- goto err;
+ PTR_ERR(info->regmap));
+ return PTR_ERR(info->regmap);
}

info->dev = &pdev->dev;
@@ -781,10 +781,9 @@ static int s5m_rtc_probe(struct platform_device *pdev)
if (s5m87xx->irq_data) {
info->irq = regmap_irq_get_virq(s5m87xx->irq_data, alarm_irq);
if (info->irq <= 0) {
- ret = -EINVAL;
dev_err(&pdev->dev, "Failed to get virtual IRQ %d\n",
alarm_irq);
- goto err;
+ return -EINVAL;
}
}

@@ -799,10 +798,8 @@ static int s5m_rtc_probe(struct platform_device *pdev)
info->rtc_dev = devm_rtc_device_register(&pdev->dev, "s5m-rtc",
&s5m_rtc_ops, THIS_MODULE);

- if (IS_ERR(info->rtc_dev)) {
- ret = PTR_ERR(info->rtc_dev);
- goto err;
- }
+ if (IS_ERR(info->rtc_dev))
+ return PTR_ERR(info->rtc_dev);

if (!info->irq) {
dev_info(&pdev->dev, "Alarm IRQ not available\n");
@@ -815,23 +812,9 @@ static int s5m_rtc_probe(struct platform_device *pdev)
if (ret < 0) {
dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
info->irq, ret);
- goto err;
+ return ret;
}

- return 0;
-
-err:
- i2c_unregister_device(info->i2c);
-
- return ret;
-}
-
-static int s5m_rtc_remove(struct platform_device *pdev)
-{
- struct s5m_rtc_info *info = platform_get_drvdata(pdev);
-
- i2c_unregister_device(info->i2c);
-
return 0;
}

@@ -876,7 +859,6 @@ static struct platform_driver s5m_rtc_driver = {
.pm = &s5m_rtc_pm_ops,
},
.probe = s5m_rtc_probe,
- .remove = s5m_rtc_remove,
.id_table = s5m_rtc_id,
};

--
2.29.1