rtc: fix potential race condition
RTC drivers must not return an error after device registration.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Reported-by: Ales Novak <alnovak@suse.cz>
Cc: Alexander Shiyan <shc_work@mail.ru>
Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Srikanth Srinivasan <srikanth.srinivasan@freescale.com>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.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-ds1511.c b/drivers/rtc/rtc-ds1511.c
index bc7b4fc..4ff20f9 100644
--- a/drivers/rtc/rtc-ds1511.c
+++ b/drivers/rtc/rtc-ds1511.c
@@ -473,7 +473,6 @@
static int ds1511_rtc_probe(struct platform_device *pdev)
{
- struct rtc_device *rtc;
struct resource *res;
struct rtc_plat_data *pdata;
int ret = 0;
@@ -512,6 +511,12 @@
spin_lock_init(&pdata->lock);
platform_set_drvdata(pdev, pdata);
+
+ pdata->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
+ &ds1511_rtc_ops, THIS_MODULE);
+ if (IS_ERR(pdata->rtc))
+ return PTR_ERR(pdata->rtc);
+
/*
* if the platform has an interrupt in mind for this device,
* then by all means, set it
@@ -526,15 +531,12 @@
}
}
- rtc = devm_rtc_device_register(&pdev->dev, pdev->name, &ds1511_rtc_ops,
- THIS_MODULE);
- if (IS_ERR(rtc))
- return PTR_ERR(rtc);
- pdata->rtc = rtc;
-
ret = sysfs_create_bin_file(&pdev->dev.kobj, &ds1511_nvram_attr);
+ if (ret)
+ dev_err(&pdev->dev, "Unable to create sysfs entry: %s\n",
+ ds1511_nvram_attr.attr.name);
- return ret;
+ return 0;
}
static int ds1511_rtc_remove(struct platform_device *pdev)