From: Axel Lin <axel.lin@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: Yong Shen <yong.shen@linaro.org>,
Fabio Estevam <fabio.estevam@freescale.com>,
Liam Girdwood <lrg@ti.com>,
Mark Brown <broonie@opensource.wolfsonmicro.com>
Subject: [PATCH] regulator: Fix unbalanced lock/unlock in mc13892_regulator_probe error path
Date: Thu, 15 Mar 2012 12:49:09 +0800 [thread overview]
Message-ID: <1331786949.4709.1.camel@phoenix> (raw)
We do not hold a lock while registering regulator, thus should not call unlock
if regulator_register fails.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
---
drivers/regulator/mc13892-regulator.c | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/regulator/mc13892-regulator.c b/drivers/regulator/mc13892-regulator.c
index e8cfc99..845aa22 100644
--- a/drivers/regulator/mc13892-regulator.c
+++ b/drivers/regulator/mc13892-regulator.c
@@ -552,7 +552,7 @@ static int __devinit mc13892_regulator_probe(struct platform_device *pdev)
mc13xxx_lock(mc13892);
ret = mc13xxx_reg_read(mc13892, MC13892_REVISION, &val);
if (ret)
- goto err_free;
+ goto err_unlock;
/* enable switch auto mode */
if ((val & 0x0000FFFF) == 0x45d0) {
@@ -562,7 +562,7 @@ static int __devinit mc13892_regulator_probe(struct platform_device *pdev)
MC13892_SWITCHERS4_SW1MODE_AUTO |
MC13892_SWITCHERS4_SW2MODE_AUTO);
if (ret)
- goto err_free;
+ goto err_unlock;
ret = mc13xxx_reg_rmw(mc13892, MC13892_SWITCHERS5,
MC13892_SWITCHERS5_SW3MODE_M |
@@ -570,7 +570,7 @@ static int __devinit mc13892_regulator_probe(struct platform_device *pdev)
MC13892_SWITCHERS5_SW3MODE_AUTO |
MC13892_SWITCHERS5_SW4MODE_AUTO);
if (ret)
- goto err_free;
+ goto err_unlock;
}
mc13xxx_unlock(mc13892);
@@ -612,10 +612,10 @@ static int __devinit mc13892_regulator_probe(struct platform_device *pdev)
err:
while (--i >= 0)
regulator_unregister(priv->regulators[i]);
+ return ret;
-err_free:
+err_unlock:
mc13xxx_unlock(mc13892);
-
return ret;
}
--
1.7.5.4
next reply other threads:[~2012-03-15 4:49 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-15 4:49 Axel Lin [this message]
2012-03-26 17:32 ` [PATCH] regulator: Fix unbalanced lock/unlock in mc13892_regulator_probe error path Mark Brown
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