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Commit edca66d2 authored by Jingoo Han's avatar Jingoo Han Committed by Linus Torvalds
Browse files

rtc: rtc-ds1307: use devm_*() functions 



Use devm_*() functions to make cleanup paths simpler.

Signed-off-by: default avatarJingoo Han <jg1.han@samsung.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 812f1478

drivers/rtc/rtc-ds1307.c

+17 −26
Original line number Diff line number Diff line
@@ -683,7 +683,7 @@ static int ds1307_probe(struct i2c_client *client, 
	    && !i2c_check_functionality(adapter, I2C_FUNC_SMBUS_I2C_BLOCK))

		return -EIO;



	ds1307 = kzalloc(sizeof(struct ds1307), GFP_KERNEL);

	ds1307 = devm_kzalloc(&client->dev, sizeof(struct ds1307), GFP_KERNEL);

	if (!ds1307)

		return -ENOMEM;
@@ -715,7 +715,7 @@ static int ds1307_probe(struct i2c_client *client, 
		if (tmp != 2) {

			dev_dbg(&client->dev, "read error %d\n", tmp);

			err = -EIO;

			goto exit_free;

			goto exit;

		}



		/* oscillator off?  turn it on, so clock can tick. */
@@ -754,7 +754,7 @@ static int ds1307_probe(struct i2c_client *client, 
		if (tmp != 2) {

			dev_dbg(&client->dev, "read error %d\n", tmp);

			err = -EIO;

			goto exit_free;

			goto exit;

		}



		/* oscillator off?  turn it on, so clock can tick. */
@@ -798,7 +798,7 @@ static int ds1307_probe(struct i2c_client *client, 
			if (tmp != 2) {

				dev_dbg(&client->dev, "read error %d\n", tmp);

				err = -EIO;

				goto exit_free;

				goto exit;

			}



			/* correct hour */
@@ -826,7 +826,7 @@ read_rtc: 
	if (tmp != 8) {

		dev_dbg(&client->dev, "read error %d\n", tmp);

		err = -EIO;

		goto exit_free;

		goto exit;

	}



	/*
@@ -868,7 +868,7 @@ read_rtc: 
		if (tmp < 0) {

			dev_dbg(&client->dev, "read error %d\n", tmp);

			err = -EIO;

			goto exit_free;

			goto exit;

		}



		/* oscillator fault?  clear flag, and warn */
@@ -927,13 +927,13 @@ read_rtc: 
				bin2bcd(tmp));

	}



	ds1307->rtc = rtc_device_register(client->name, &client->dev,

	ds1307->rtc = devm_rtc_device_register(&client->dev, client->name,

				&ds13xx_rtc_ops, THIS_MODULE);

	if (IS_ERR(ds1307->rtc)) {

		err = PTR_ERR(ds1307->rtc);

		dev_err(&client->dev,

			"unable to register the class device\n");

		goto exit_free;

		goto exit;

	}



	if (want_irq) {
@@ -942,7 +942,7 @@ read_rtc: 
		if (err) {

			dev_err(&client->dev,

				"unable to request IRQ!\n");

			goto exit_irq;

			goto exit;

		}



		device_set_wakeup_capable(&client->dev, 1);
@@ -951,11 +951,12 @@ read_rtc: 
	}



	if (chip->nvram_size) {

		ds1307->nvram = kzalloc(sizeof(struct bin_attribute),

		ds1307->nvram = devm_kzalloc(&client->dev,

					sizeof(struct bin_attribute),

					GFP_KERNEL);

		if (!ds1307->nvram) {

			err = -ENOMEM;

			goto exit_nvram;

			goto exit;

		}

		ds1307->nvram->attr.name = "nvram";

		ds1307->nvram->attr.mode = S_IRUGO | S_IWUSR;
@@ -965,21 +966,15 @@ read_rtc: 
		ds1307->nvram->size = chip->nvram_size;

		ds1307->nvram_offset = chip->nvram_offset;

		err = sysfs_create_bin_file(&client->dev.kobj, ds1307->nvram);

		if (err) {

			kfree(ds1307->nvram);

			goto exit_nvram;

		}

		if (err)

			goto exit;

		set_bit(HAS_NVRAM, &ds1307->flags);

		dev_info(&client->dev, "%zu bytes nvram\n", ds1307->nvram->size);

	}



	return 0;



exit_nvram:

exit_irq:

	rtc_device_unregister(ds1307->rtc);

exit_free:

	kfree(ds1307);

exit:

	return err;

}
@@ -992,13 +987,9 @@ static int ds1307_remove(struct i2c_client *client) 
		cancel_work_sync(&ds1307->work);

	}



	if (test_and_clear_bit(HAS_NVRAM, &ds1307->flags)) {

	if (test_and_clear_bit(HAS_NVRAM, &ds1307->flags))

		sysfs_remove_bin_file(&client->dev.kobj, ds1307->nvram);

		kfree(ds1307->nvram);

	}



	rtc_device_unregister(ds1307->rtc);

	kfree(ds1307);

	return 0;

}