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authorSachin Kamat <sachin.kamat@linaro.org>2013-04-30 03:20:29 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-30 05:28:35 +0400
commit0529bf4673a05ca688fa42a14917069278d88103 (patch)
tree7a7607a59ad8e32094503cad64bf5f31ec967c5a /drivers/rtc/rtc-ds1305.c
parentd64132ac0083d97f0a8b63f3c1759b2e9b5ed7b1 (diff)
downloadlinux-0529bf4673a05ca688fa42a14917069278d88103.tar.xz
drivers/rtc/rtc-ds1305.c: use devm_* APIs
devm_* functions are device managed and make cleanup code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.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>
Diffstat (limited to 'drivers/rtc/rtc-ds1305.c')
-rw-r--r--drivers/rtc/rtc-ds1305.c35
1 files changed, 12 insertions, 23 deletions
diff --git a/drivers/rtc/rtc-ds1305.c b/drivers/rtc/rtc-ds1305.c
index b05a6dc96405..bb5f13f63630 100644
--- a/drivers/rtc/rtc-ds1305.c
+++ b/drivers/rtc/rtc-ds1305.c
@@ -619,7 +619,7 @@ static int ds1305_probe(struct spi_device *spi)
return -EINVAL;
/* set up driver data */
- ds1305 = kzalloc(sizeof *ds1305, GFP_KERNEL);
+ ds1305 = devm_kzalloc(&spi->dev, sizeof(*ds1305), GFP_KERNEL);
if (!ds1305)
return -ENOMEM;
ds1305->spi = spi;
@@ -632,7 +632,7 @@ static int ds1305_probe(struct spi_device *spi)
if (status < 0) {
dev_dbg(&spi->dev, "can't %s, %d\n",
"read", status);
- goto fail0;
+ return status;
}
dev_dbg(&spi->dev, "ctrl %s: %3ph\n", "read", ds1305->ctrl);
@@ -644,8 +644,7 @@ static int ds1305_probe(struct spi_device *spi)
*/
if ((ds1305->ctrl[0] & 0x38) != 0 || (ds1305->ctrl[1] & 0xfc) != 0) {
dev_dbg(&spi->dev, "RTC chip is not present\n");
- status = -ENODEV;
- goto fail0;
+ return -ENODEV;
}
if (ds1305->ctrl[2] == 0)
dev_dbg(&spi->dev, "chip may not be present\n");
@@ -664,7 +663,7 @@ static int ds1305_probe(struct spi_device *spi)
dev_dbg(&spi->dev, "clear WP --> %d\n", status);
if (status < 0)
- goto fail0;
+ return status;
}
/* on DS1305, maybe start oscillator; like most low power
@@ -718,7 +717,7 @@ static int ds1305_probe(struct spi_device *spi)
if (status < 0) {
dev_dbg(&spi->dev, "can't %s, %d\n",
"write", status);
- goto fail0;
+ return status;
}
dev_dbg(&spi->dev, "ctrl %s: %3ph\n", "write", ds1305->ctrl);
@@ -730,7 +729,7 @@ static int ds1305_probe(struct spi_device *spi)
&value, sizeof value);
if (status < 0) {
dev_dbg(&spi->dev, "read HOUR --> %d\n", status);
- goto fail0;
+ return status;
}
ds1305->hr12 = (DS1305_HR_12 & value) != 0;
@@ -738,12 +737,12 @@ static int ds1305_probe(struct spi_device *spi)
dev_dbg(&spi->dev, "AM/PM\n");
/* register RTC ... from here on, ds1305->ctrl needs locking */
- ds1305->rtc = rtc_device_register("ds1305", &spi->dev,
+ ds1305->rtc = devm_rtc_device_register(&spi->dev, "ds1305",
&ds1305_ops, THIS_MODULE);
if (IS_ERR(ds1305->rtc)) {
status = PTR_ERR(ds1305->rtc);
dev_dbg(&spi->dev, "register rtc --> %d\n", status);
- goto fail0;
+ return status;
}
/* Maybe set up alarm IRQ; be ready to handle it triggering right
@@ -754,12 +753,12 @@ static int ds1305_probe(struct spi_device *spi)
*/
if (spi->irq) {
INIT_WORK(&ds1305->work, ds1305_work);
- status = request_irq(spi->irq, ds1305_irq,
+ status = devm_request_irq(&spi->dev, spi->irq, ds1305_irq,
0, dev_name(&ds1305->rtc->dev), ds1305);
if (status < 0) {
dev_dbg(&spi->dev, "request_irq %d --> %d\n",
spi->irq, status);
- goto fail1;
+ return status;
}
device_set_wakeup_capable(&spi->dev, 1);
@@ -769,18 +768,10 @@ static int ds1305_probe(struct spi_device *spi)
status = sysfs_create_bin_file(&spi->dev.kobj, &nvram);
if (status < 0) {
dev_dbg(&spi->dev, "register nvram --> %d\n", status);
- goto fail2;
+ return status;
}
return 0;
-
-fail2:
- free_irq(spi->irq, ds1305);
-fail1:
- rtc_device_unregister(ds1305->rtc);
-fail0:
- kfree(ds1305);
- return status;
}
static int ds1305_remove(struct spi_device *spi)
@@ -792,13 +783,11 @@ static int ds1305_remove(struct spi_device *spi)
/* carefully shut down irq and workqueue, if present */
if (spi->irq) {
set_bit(FLAG_EXITING, &ds1305->flags);
- free_irq(spi->irq, ds1305);
+ devm_free_irq(&spi->dev, spi->irq, ds1305);
cancel_work_sync(&ds1305->work);
}
- rtc_device_unregister(ds1305->rtc);
spi_set_drvdata(spi, NULL);
- kfree(ds1305);
return 0;
}