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authorZumeng Chen <zumeng.chen@gmail.com>2017-09-27 15:08:17 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-10-03 02:54:03 +0200
commit05829d9431df1bf6de98679fbcfbad282c1c55a4 (patch)
tree9acb1516ff6eb28336e2e109f742de4e362cd718
parent699b52528eff8863e2c104d22d444d229236ce62 (diff)
downloadlinux-05829d9431df1bf6de98679fbcfbad282c1c55a4.tar.gz
cpufreq: ti-cpufreq: kfree opp_data when failure
memory leakage was found by kmemleak. opp_data needs to be freed when failure, including fail_put_node. unreferenced object 0xccdd4c40 (size 64): comm "swapper", pid 1, jiffies 4294938465 (age 888.520s) hex dump (first 32 bytes): 00 7c 00 c1 98 69 d8 ce 00 24 03 ce 00 24 03 ce .|...i...$...$.. 20 35 23 c1 00 00 00 00 00 00 00 00 00 00 00 00 5#............. backtrace: [<c028fb64>] kmem_cache_alloc_trace+0x2c4/0x3cc [<c076d5f0>] ti_cpufreq_probe+0x6c/0x334 [<c068d6e4>] platform_drv_probe+0x60/0xc0 [<c068b384>] driver_probe_device+0x218/0x2c4 [<c068b5a4>] __device_attach_driver+0xa8/0xdc [<c0689340>] bus_for_each_drv+0x70/0xa4 [<c068b020>] __device_attach+0xc0/0x124 [<c068b634>] device_initial_probe+0x1c/0x20 [<c068a3b8>] bus_probe_device+0x94/0x9c [<c0688300>] device_add+0x404/0x590 [<c068d408>] platform_device_add+0x11c/0x230 [<c068df40>] platform_device_register_full+0x10c/0x128 [<c076d578>] ti_cpufreq_init+0x44/0x50 [<c01017c4>] do_one_initcall+0x54/0x180 [<c0e00fe0>] kernel_init_freeable+0x270/0x33c [<c093f2bc>] kernel_init+0x18/0x124 Signed-off-by: Zumeng Chen <zumeng.chen@gmail.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-rw-r--r--drivers/cpufreq/ti-cpufreq.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/cpufreq/ti-cpufreq.c b/drivers/cpufreq/ti-cpufreq.c
index 4bf47de..ffcddcd 100644
--- a/drivers/cpufreq/ti-cpufreq.c
+++ b/drivers/cpufreq/ti-cpufreq.c
@@ -217,7 +217,8 @@ static int ti_cpufreq_init(void)
opp_data->cpu_dev = get_cpu_device(0);
if (!opp_data->cpu_dev) {
pr_err("%s: Failed to get device for CPU0\n", __func__);
- return -ENODEV;
+ ret = ENODEV;
+ goto free_opp_data;
}
opp_data->opp_node = dev_pm_opp_of_get_opp_desc_node(opp_data->cpu_dev);
@@ -262,6 +263,8 @@ register_cpufreq_dt:
fail_put_node:
of_node_put(opp_data->opp_node);
+free_opp_data:
+ kfree(opp_data);
return ret;
}