Hi Chanwoo, On 11 April 2016 at 07:46, Chanwoo Choi <cw00.choi@xxxxxxxxxxx> wrote: > Hi Anand, > > On 2016년 04월 09일 03:24, Chanwoo Choi wrote: >> Hi Anand, >> >> On Sat, Apr 9, 2016 at 3:11 AM, Anand Moon <linux.amoon@xxxxxxxxx> wrote: >>> Hi Chanwoo, >>> > > [snip] > >>>> >>> >>> I am observing following deadlock. Both on Odroid U3 and Odroid XU4. >> >> Thanks for your test. I'll test it again and fix it. > > This possible recursive locking is fixed with following diff: > > Thanks for your report. I'll fix it on next patchset[1] (v9). > [1] https://lkml.org/lkml/2016/4/8/14 > > > diff --git a/drivers/devfreq/governor_passive.c b/drivers/devfreq/governor_passive.c > index 28a9ae32d330..a4b0b02ee797 100644 > --- a/drivers/devfreq/governor_passive.c > +++ b/drivers/devfreq/governor_passive.c > @@ -102,7 +102,7 @@ static int update_devfreq_passive(struct devfreq *devfreq, unsigned long freq) > if (!devfreq->governor) > return -EINVAL; > > - mutex_lock(&devfreq->lock); > + mutex_lock_nested(&devfreq->lock, SINGLE_DEPTH_NESTING); > > ret = devfreq->governor->get_target_freq(devfreq, &freq); > if (ret < 0) > > Best Regards, > Chanwoo Choi > Thanks you for these patches on devfreq. These changes fix the warning. Tested-by: Anand Moon <linux.amoon@xxxxxxxxx> Tested on Odroid XU4 and Odroid U3. Best Regards -Anand Moon -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
