linux-kernel - [PATCH] PM / Domains: Fix memory leak on error path in pm_genpd_attach

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Date:	Sat, 13 Oct 2012 10:58:31 +0900
From:	Jonghwan Choi <jhbird.choi@...sung.com>
To:	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	'Pavel Machek' <pavel@....cz>, "'Rafael J. Wysocki'" <rjw@...k.pl>
Subject: [PATCH] PM / Domains: Fix memory leak on error path in
 pm_genpd_attach_cpuidle

If pm_genpd_attach_cpudidle failed we leak memory stored in 'cpu_data'.

Signed-off-by: Jonghwan Choi <jhbird.choi@...sung.com>
---
 drivers/base/power/domain.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index c22b869..96b71b6 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1862,7 +1862,7 @@ int pm_genpd_attach_cpuidle(struct generic_pm_domain
*genpd, int state)
        cpuidle_drv = cpuidle_driver_ref();
        if (!cpuidle_drv) {
                ret = -ENODEV;
-               goto out;
+               goto err_drv;
        }
        if (cpuidle_drv->state_count <= state) {
                ret = -EINVAL;
@@ -1884,6 +1884,9 @@ int pm_genpd_attach_cpuidle(struct generic_pm_domain
*genpd, int state)

  err:
        cpuidle_driver_unref();
+
+ err_drv:
+       kfree(cpu_data);
        goto out;
 }

--
1.7.1

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