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

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

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jingoo Han 2013-07-03 15:07:05 -07:00 committed by Linus Torvalds
parent 812f147853
commit edca66d2ce
1 changed files with 17 additions and 26 deletions
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43
drivers/rtc/rtc-ds1307.c
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@ -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 @@ static int ds1307_probe(struct i2c_client *client,
if (tmp != 8) {
dev_dbg(&client->dev, "read error %d\n", tmp);
err = -EIO;
goto exit_free;
goto exit;
}
/*
@ -868,7 +868,7 @@ static int ds1307_probe(struct i2c_client *client,
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 @@ static int ds1307_probe(struct i2c_client *client,
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 @@ static int ds1307_probe(struct i2c_client *client,
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 @@ static int ds1307_probe(struct i2c_client *client,
}
if (chip->nvram_size) {
ds1307->nvram = kzalloc(sizeof(struct bin_attribute),
GFP_KERNEL);
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 @@ static int ds1307_probe(struct i2c_client *client,
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;
}