On Mon 2015-01-26 13:07:03, Fu, Zhonghui wrote: > >From f9c841d1f943d81b5ab0aac7483e794a7f966296 Mon Sep 17 00:00:00 2001 > From: Zhonghui Fu <[email protected]> > Date: Mon, 26 Jan 2015 11:27:08 +0800 > Subject: [PATCH] PM/Trace: get rid of synchronous resume limit during PM trace > > There are some kind of dependency between devices in some > hardware platforms. So, asynchronous resuming devices may > hang system due to wrong resume order. As a result, should > not fore synchronously resuming devices during tracing > PM events. > > Signed-off-by: Zhonghui Fu <[email protected]> > --- > drivers/base/power/main.c | 3 +-- > include/linux/resume-trace.h | 7 ------- > 2 files changed, 1 insertions(+), 9 deletions(-) > > diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c > index 9717d5f..5df148b 100644 > --- a/drivers/base/power/main.c > +++ b/drivers/base/power/main.c > @@ -517,8 +517,7 @@ static int device_resume_noirq(struct device *dev, > pm_message_t state, bool asyn > > static bool is_async(struct device *dev) > { > - return dev->power.async_suspend && pm_async_enabled > - && !pm_trace_is_enabled(); > + return dev->power.async_suspend && pm_async_enabled; > } >
Actually... whoever did the original patch was evil person. Changing behaviour when tracing is requested is evil, evil, evil. Git blame tells me Signed-off-by: Chuansheng Liu <[email protected]> went to the dark side. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
