rtc: rtc-rs5c372: use devm_*() functions

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>

diff --git a/drivers/rtc/rtc-rs5c372.c b/drivers/rtc/rtc-rs5c372.c
index 581739f40097320fda63db04fa044b29c114a702..224d634322b4f0abedf40d31b039ce9bb491a732 100644 (file)
--- a/drivers/rtc/rtc-rs5c372.c
+++ b/drivers/rtc/rtc-rs5c372.c
@@ -579,7 +579,9 @@ static int rs5c372_probe(struct i2c_client *client,
                }
        }
 
-       if (!(rs5c372 = kzalloc(sizeof(struct rs5c372), GFP_KERNEL))) {
+       rs5c372 = devm_kzalloc(&client->dev, sizeof(struct rs5c372),
+                               GFP_KERNEL);
+       if (!rs5c372) {
                err = -ENOMEM;
                goto exit;
        }
@@ -594,7 +596,7 @@ static int rs5c372_probe(struct i2c_client *client,
 
        err = rs5c_get_regs(rs5c372);
        if (err < 0)
-               goto exit_kfree;
+               goto exit;
 
        /* clock may be set for am/pm or 24 hr time */
        switch (rs5c372->type) {
@@ -617,7 +619,7 @@ static int rs5c372_probe(struct i2c_client *client,
                break;
        default:
                dev_err(&client->dev, "unknown RTC type\n");
-               goto exit_kfree;
+               goto exit;
        }
 
        /* if the oscillator lost power and no other software (like
@@ -629,7 +631,7 @@ static int rs5c372_probe(struct i2c_client *client,
        err = rs5c_oscillator_setup(rs5c372);
        if (unlikely(err < 0)) {
                dev_err(&client->dev, "setup error\n");
-               goto exit_kfree;
+               goto exit;
        }
 
        if (rs5c372_get_datetime(client, &tm) < 0)
@@ -648,38 +650,28 @@ static int rs5c372_probe(struct i2c_client *client,
                        );
 
        /* REVISIT use client->irq to register alarm irq ... */
-
-       rs5c372->rtc = rtc_device_register(rs5c372_driver.driver.name,
-                               &client->dev, &rs5c372_rtc_ops, THIS_MODULE);
+       rs5c372->rtc = devm_rtc_device_register(&client->dev,
+                                       rs5c372_driver.driver.name,
+                                       &rs5c372_rtc_ops, THIS_MODULE);
 
        if (IS_ERR(rs5c372->rtc)) {
                err = PTR_ERR(rs5c372->rtc);
-               goto exit_kfree;
+               goto exit;
        }
 
        err = rs5c_sysfs_register(&client->dev);
        if (err)
-               goto exit_devreg;
+               goto exit;
 
        return 0;
 
-exit_devreg:
-       rtc_device_unregister(rs5c372->rtc);
-
-exit_kfree:
-       kfree(rs5c372);
-
 exit:
        return err;
 }
 
 static int rs5c372_remove(struct i2c_client *client)
 {
-       struct rs5c372 *rs5c372 = i2c_get_clientdata(client);
-
-       rtc_device_unregister(rs5c372->rtc);
        rs5c_sysfs_unregister(&client->dev);
-       kfree(rs5c372);
        return 0;
 }