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authorAxel Lin <axel.lin@gmail.com>2011-07-06 23:40:51 +0800
committerMatthew Garrett <mjg@redhat.com>2011-08-05 14:46:11 -0400
commit03f8952cf63b6059e56074be6ed450dc7739cdee (patch)
treefbbd5410b36f457d4446ba77e2cff7fae5da3ff6
parent94ee48b9287c5c22c90754a48dbcf80b2df99d5f (diff)
platform-drivers-x86: intel_mid_thermal: fix memory leak
The memory for td_info which is allocated in initialize_sensor() should be properly kfreed in mid_thermal_probe() error patch and mid_thermal_remove(). Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Matthew Garrett <mjg@redhat.com>
-rw-r--r--drivers/platform/x86/intel_mid_thermal.c26
1 files changed, 19 insertions, 7 deletions
diff --git a/drivers/platform/x86/intel_mid_thermal.c b/drivers/platform/x86/intel_mid_thermal.c
index 3a578323122b..ccd7b1f83519 100644
--- a/drivers/platform/x86/intel_mid_thermal.c
+++ b/drivers/platform/x86/intel_mid_thermal.c
@@ -493,20 +493,30 @@ static int mid_thermal_probe(struct platform_device *pdev)
/* Register each sensor with the generic thermal framework*/
for (i = 0; i < MSIC_THERMAL_SENSORS; i++) {
+ struct thermal_device_info *td_info = initialize_sensor(i);
+
+ if (!td_info) {
+ ret = -ENOMEM;
+ goto err;
+ }
pinfo->tzd[i] = thermal_zone_device_register(name[i],
- 0, initialize_sensor(i), &tzd_ops, 0, 0, 0, 0);
- if (IS_ERR(pinfo->tzd[i]))
- goto reg_fail;
+ 0, td_info, &tzd_ops, 0, 0, 0, 0);
+ if (IS_ERR(pinfo->tzd[i])) {
+ kfree(td_info);
+ ret = PTR_ERR(pinfo->tzd[i]);
+ goto err;
+ }
}
pinfo->pdev = pdev;
platform_set_drvdata(pdev, pinfo);
return 0;
-reg_fail:
- ret = PTR_ERR(pinfo->tzd[i]);
- while (--i >= 0)
+err:
+ while (--i >= 0) {
+ kfree(pinfo->tzd[i]->devdata);
thermal_zone_device_unregister(pinfo->tzd[i]);
+ }
configure_adc(0);
kfree(pinfo);
return ret;
@@ -524,8 +534,10 @@ static int mid_thermal_remove(struct platform_device *pdev)
int i;
struct platform_info *pinfo = platform_get_drvdata(pdev);
- for (i = 0; i < MSIC_THERMAL_SENSORS; i++)
+ for (i = 0; i < MSIC_THERMAL_SENSORS; i++) {
+ kfree(pinfo->tzd[i]->devdata);
thermal_zone_device_unregister(pinfo->tzd[i]);
+ }
kfree(pinfo);
platform_set_drvdata(pdev, NULL);