From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ulf Hansson Subject: [PATCH 1/2] PM / Domains: Remove redundant pm_runtime_get|put*() in pm_genpd_prepare() Date: Fri, 22 Apr 2016 10:15:54 +0200 Message-ID: <1461312955-8547-2-git-send-email-ulf.hansson@linaro.org> References: <1461312955-8547-1-git-send-email-ulf.hansson@linaro.org> Return-path: Received: from mail-lf0-f41.google.com ([209.85.215.41]:36637 "EHLO mail-lf0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751681AbcDVIQI (ORCPT ); Fri, 22 Apr 2016 04:16:08 -0400 Received: by mail-lf0-f41.google.com with SMTP id g184so74885597lfb.3 for ; Fri, 22 Apr 2016 01:16:07 -0700 (PDT) In-Reply-To: <1461312955-8547-1-git-send-email-ulf.hansson@linaro.org> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: "Rafael J. Wysocki" , Kevin Hilman , Ulf Hansson , linux-pm@vger.kernel.org Cc: Len Brown , Pavel Machek , Geert Uytterhoeven , Lina Iyer , Axel Haslam , Marek Szyprowski , Jon Hunter , Andy Gross , Laurent Pinchart The PM core increases the runtime PM usage count in the system PM prepare phase. This makes some of the pm_runtime_get|put*() calls in pm_gendp_prepare() redundant, so let's remove them. Signed-off-by: Ulf Hansson --- drivers/base/power/domain.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 4ce4ce0..60a3573 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -730,14 +730,11 @@ static int pm_genpd_prepare(struct device *dev) * at this point and a system wakeup event should be reported if it's * set up to wake up the system from sleep states. */ - pm_runtime_get_noresume(dev); if (pm_runtime_barrier(dev) && device_may_wakeup(dev)) pm_wakeup_event(dev, 0); - if (pm_wakeup_pending()) { - pm_runtime_put(dev); + if (pm_wakeup_pending()) return -EBUSY; - } if (resume_needed(dev, genpd)) pm_runtime_resume(dev); @@ -751,10 +748,8 @@ static int pm_genpd_prepare(struct device *dev) mutex_unlock(&genpd->lock); - if (genpd->suspend_power_off) { - pm_runtime_put_noidle(dev); + if (genpd->suspend_power_off) return 0; - } /* * The PM domain must be in the GPD_STATE_ACTIVE state at this point, @@ -776,7 +771,6 @@ static int pm_genpd_prepare(struct device *dev) pm_runtime_enable(dev); } - pm_runtime_put(dev); return ret; } -- 1.9.1