Commit 4053e749 authored by Wolfram Sang's avatar Wolfram Sang Committed by Alexandre Belloni
Browse files

rtc: s35390a: convert to devm_i2c_new_dummy_device()



I was about to simplify the call to i2c_unregister_device() when I
realized that converting to devm_i2c_new_dummy_device() will simplify
the driver a lot. So I took this approach.

Signed-off-by: default avatarWolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20190830133124.21633-3-wsa+renesas@sang-engineering.com


Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
parent 59a7f24f
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+13 −41
Original line number Diff line number Diff line
@@ -434,37 +434,32 @@ static int s35390a_probe(struct i2c_client *client,
	char buf, status1;
	struct device *dev = &client->dev;

	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
		err = -ENODEV;
		goto exit;
	}
	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
		return -ENODEV;

	s35390a = devm_kzalloc(dev, sizeof(struct s35390a), GFP_KERNEL);
	if (!s35390a) {
		err = -ENOMEM;
		goto exit;
	}
	if (!s35390a)
		return -ENOMEM;

	s35390a->client[0] = client;
	i2c_set_clientdata(client, s35390a);

	/* This chip uses multiple addresses, use dummy devices for them */
	for (i = 1; i < 8; ++i) {
		s35390a->client[i] = i2c_new_dummy_device(client->adapter,
		s35390a->client[i] = devm_i2c_new_dummy_device(dev,
							       client->adapter,
							       client->addr + i);
		if (IS_ERR(s35390a->client[i])) {
			dev_err(dev, "Address %02x unavailable\n",
				client->addr + i);
			err = PTR_ERR(s35390a->client[i]);
			goto exit_dummy;
			return PTR_ERR(s35390a->client[i]);
		}
	}

	err_read = s35390a_read_status(s35390a, &status1);
	if (err_read < 0) {
		err = err_read;
		dev_err(dev, "error resetting chip\n");
		goto exit_dummy;
		return err_read;
	}

	if (status1 & S35390A_FLAG_24H)
@@ -478,13 +473,13 @@ static int s35390a_probe(struct i2c_client *client,
		err = s35390a_set_reg(s35390a, S35390A_CMD_STATUS2, &buf, 1);
		if (err < 0) {
			dev_err(dev, "error disabling alarm");
			goto exit_dummy;
			return err;
		}
	} else {
		err = s35390a_disable_test_mode(s35390a);
		if (err < 0) {
			dev_err(dev, "error disabling test mode\n");
			goto exit_dummy;
			return err;
		}
	}

@@ -493,10 +488,8 @@ static int s35390a_probe(struct i2c_client *client,
	s35390a->rtc = devm_rtc_device_register(dev, s35390a_driver.driver.name,
						&s35390a_rtc_ops, THIS_MODULE);

	if (IS_ERR(s35390a->rtc)) {
		err = PTR_ERR(s35390a->rtc);
		goto exit_dummy;
	}
	if (IS_ERR(s35390a->rtc))
		return PTR_ERR(s35390a->rtc);

	/* supports per-minute alarms only, therefore set uie_unsupported */
	s35390a->rtc->uie_unsupported = 1;
@@ -505,26 +498,6 @@ static int s35390a_probe(struct i2c_client *client,
		rtc_update_irq(s35390a->rtc, 1, RTC_AF);

	return 0;

exit_dummy:
	for (i = 1; i < 8; ++i)
		if (s35390a->client[i])
			i2c_unregister_device(s35390a->client[i]);

exit:
	return err;
}

static int s35390a_remove(struct i2c_client *client)
{
	unsigned int i;
	struct s35390a *s35390a = i2c_get_clientdata(client);

	for (i = 1; i < 8; ++i)
		if (s35390a->client[i])
			i2c_unregister_device(s35390a->client[i]);

	return 0;
}

static struct i2c_driver s35390a_driver = {
@@ -533,7 +506,6 @@ static struct i2c_driver s35390a_driver = {
		.of_match_table = of_match_ptr(s35390a_of_match),
	},
	.probe		= s35390a_probe,
	.remove		= s35390a_remove,
	.id_table	= s35390a_id,
};