drivers/rtc/rtc-isl1208.c: use devm_* APIs

devm_* APIs are device managed and make code simpler.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Herbert Valerio Riedel <hvr@gnu.org>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 11 insertions, 25 deletions

diff --git a/drivers/rtc/rtc-isl1208.c b/drivers/rtc/rtc-isl1208.c
index 5a0bf7ce1033..c3c549d511b9 100644
--- a/drivers/rtc/rtc-isl1208.c
+++ b/drivers/rtc/rtc-isl1208.c
@@ -643,10 +643,11 @@ isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id)
                  "chip found, driver version " DRV_VERSION "\n");
 
         if (client->irq > 0) {
-                rc = request_threaded_irq(client->irq, NULL,
-                                          isl1208_rtc_interrupt,
-                                          IRQF_SHARED,
-                                          isl1208_driver.driver.name, client);
+                rc = devm_request_threaded_irq(&client->dev, client->irq, NULL,
+                                               isl1208_rtc_interrupt,
+                                               IRQF_SHARED,
+                                               isl1208_driver.driver.name,
+                                               client);
                 if (!rc) {
                         device_init_wakeup(&client->dev, 1);
                         enable_irq_wake(client->irq);
@@ -658,20 +659,18 @@ isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id)
                 }
         }
 
-        rtc = rtc_device_register(isl1208_driver.driver.name,
-                                  &client->dev, &isl1208_rtc_ops,
+        rtc = devm_rtc_device_register(&client->dev, isl1208_driver.driver.name,
+                                  &isl1208_rtc_ops,
                                   THIS_MODULE);
-        if (IS_ERR(rtc)) {
-                rc = PTR_ERR(rtc);
-                goto exit_free_irq;
-        }
+        if (IS_ERR(rtc))
+                return PTR_ERR(rtc);
 
         i2c_set_clientdata(client, rtc);
 
         rc = isl1208_i2c_get_sr(client);
         if (rc < 0) {
                 dev_err(&client->dev, "reading status failed\n");
-                goto exit_unregister;
+                return rc;
         }
 
         if (rc & ISL1208_REG_SR_RTCF)
@@ -680,28 +679,15 @@ isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id)
 
         rc = sysfs_create_group(&client->dev.kobj, &isl1208_rtc_sysfs_files);
         if (rc)
-                goto exit_unregister;
+                return rc;
 
         return 0;
-
-exit_unregister:
-        rtc_device_unregister(rtc);
-exit_free_irq:
-        if (client->irq)
-                free_irq(client->irq, client);
-
-        return rc;
 }
 
 static int
 isl1208_remove(struct i2c_client *client)
 {
-        struct rtc_device *rtc = i2c_get_clientdata(client);
-
         sysfs_remove_group(&client->dev.kobj, &isl1208_rtc_sysfs_files);
-        rtc_device_unregister(rtc);
-        if (client->irq)
-                free_irq(client->irq, client);
 
         return 0;
 }