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>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/rtc/rtc-ds1742.c b/drivers/rtc/rtc-ds1742.c
index 5a1f3b2a8f1e..942103dac30f 100644
--- a/drivers/rtc/rtc-ds1742.c
+++ b/drivers/rtc/rtc-ds1742.c
@@ -204,8 +204,11 @@ static int ds1742_rtc_probe(struct platform_device *pdev)
                 return PTR_ERR(rtc);
 
         ret = sysfs_create_bin_file(&pdev->dev.kobj, &pdata->nvram_attr);
+        if (ret)
+                dev_err(&pdev->dev, "Unable to create sysfs entry: %s\n",
+                        pdata->nvram_attr.attr.name);
 
-        return ret;
+        return 0;
 }
 
 static int ds1742_rtc_remove(struct platform_device *pdev)