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authorAlessandro Zummo <a.zummo@towertech.it>2014-04-04 01:49:36 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-04 03:21:16 +0400
commit4071ea25cc08d41002746cca2d69ac700d67a2ac (patch)
tree43cf44f8265b885c8c1e4e81f0ced5c6babb53c7 /drivers/rtc/rtc-ds1672.c
parenta68b31080912dae377bee4994716b357dc74286d (diff)
downloadlinux-4071ea25cc08d41002746cca2d69ac700d67a2ac.tar.xz
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>
Diffstat (limited to 'drivers/rtc/rtc-ds1672.c')
-rw-r--r--drivers/rtc/rtc-ds1672.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/rtc/rtc-ds1672.c b/drivers/rtc/rtc-ds1672.c
index 18e2d8471472..a4888dbca2e1 100644
--- a/drivers/rtc/rtc-ds1672.c
+++ b/drivers/rtc/rtc-ds1672.c
@@ -177,8 +177,9 @@ static int ds1672_probe(struct i2c_client *client,
/* read control register */
err = ds1672_get_control(client, &control);
- if (err)
- goto exit_devreg;
+ if (err) {
+ dev_warn(&client->dev, "Unable to read the control register\n");
+ }
if (control & DS1672_REG_CONTROL_EOSC)
dev_warn(&client->dev, "Oscillator not enabled. "
@@ -187,12 +188,10 @@ static int ds1672_probe(struct i2c_client *client,
/* Register sysfs hooks */
err = device_create_file(&client->dev, &dev_attr_control);
if (err)
- goto exit_devreg;
+ dev_err(&client->dev, "Unable to create sysfs entry: %s\n",
+ dev_attr_control.attr.name);
return 0;
-
- exit_devreg:
- return err;
}
static struct i2c_device_id ds1672_id[] = {