3.16.42-rc1 review patch. If anyone has any objections, please let me know.
------------------ From: Axel Lin <[email protected]> commit 0f376c9cd86c23f37312d37748b233660ef9d9af upstream. Use devfreq_list_lock around list_del() to prevent list corruption. Signed-off-by: Axel Lin <[email protected]> Acked-by: MyungJoo Ham <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]> Signed-off-by: Ben Hutchings <[email protected]> --- drivers/devfreq/devfreq.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -507,17 +507,19 @@ struct devfreq *devfreq_add_device(struc if (devfreq->governor) err = devfreq->governor->event_handler(devfreq, DEVFREQ_GOV_START, NULL); - mutex_unlock(&devfreq_list_lock); if (err) { dev_err(dev, "%s: Unable to start governor for the device\n", __func__); goto err_init; } + mutex_unlock(&devfreq_list_lock); return devfreq; err_init: list_del(&devfreq->node); + mutex_unlock(&devfreq_list_lock); + device_unregister(&devfreq->dev); err_dev: kfree(devfreq);
