From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Fu, Zhonghui" Subject: Re: [PATCH] PM/Trace: get rid of synchronous resume limit during PM trace Date: Mon, 26 Jan 2015 15:59:59 +0800 Message-ID: <54C5F3FF.6030600@linux.intel.com> References: <54C5CB77.4000109@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <54C5CB77.4000109@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org To: "Rafael J. Wysocki" , len.brown@intel.com, pavel@ucw.cz, Greg Kroah-Hartman , linux-pm@vger.kernel.org, "linux-kernel@vger.kernel.org" List-Id: linux-pm@vger.kernel.org This is a incorrect patch , please ignore it. Thanks, Zhonghui On 2015/1/26 13:07, Fu, Zhonghui wrote: > From f9c841d1f943d81b5ab0aac7483e794a7f966296 Mon Sep 17 00:00:00 2001 > From: Zhonghui Fu > 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 > --- > 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; > } > > static void async_resume_noirq(void *data, async_cookie_t cookie) > diff --git a/include/linux/resume-trace.h b/include/linux/resume-trace.h > index f31db23..fd0866e 100644 > --- a/include/linux/resume-trace.h > +++ b/include/linux/resume-trace.h > @@ -7,11 +7,6 @@ > > extern int pm_trace_enabled; > > -static inline int pm_trace_is_enabled(void) > -{ > - return pm_trace_enabled; > -} > - > struct device; > extern void set_trace_device(struct device *); > extern void generate_resume_trace(const void *tracedata, unsigned int user); > @@ -24,8 +19,6 @@ extern int show_trace_dev_match(char *buf, size_t size); > > #else > > -static inline int pm_trace_is_enabled(void) { return 0; } > - > #define TRACE_DEVICE(dev) do { } while (0) > #define TRACE_RESUME(dev) do { } while (0) > > -- 1.7.1 >