From mboxrd@z Thu Jan 1 00:00:00 1970 From: Aaron Lu Subject: [PATCH v4 5/7] scsi: pm: use runtime resume callback if available Date: Fri, 27 Jul 2012 17:00:48 +0800 Message-ID: <1343379650-2867-6-git-send-email-aaron.lu@amd.com> References: <1343379650-2867-1-git-send-email-aaron.lu@amd.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from ch1ehsobe005.messaging.microsoft.com ([216.32.181.185]:27491 "EHLO ch1outboundpool.messaging.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752181Ab2G0JCO (ORCPT ); Fri, 27 Jul 2012 05:02:14 -0400 In-Reply-To: <1343379650-2867-1-git-send-email-aaron.lu@amd.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: James Bottomley , Jeff Garzik , Alan Stern , Sergei Shtylyov , Oliver Neukum Cc: Jeff Wu , Lin Ming , linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org, Aaron Lu , Aaron Lu When runtime resume a scsi device, if the device's driver has implemented runtime resume callback, use that. sr driver needs this to do different things for system resume and runtime resume. Signed-off-by: Aaron Lu --- drivers/scsi/scsi_pm.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/drivers/scsi/scsi_pm.c b/drivers/scsi/scsi_pm.c index 83edb93..690136c 100644 --- a/drivers/scsi/scsi_pm.c +++ b/drivers/scsi/scsi_pm.c @@ -34,14 +34,19 @@ static int scsi_dev_type_suspend(struct device *dev, pm_message_t msg) return err; } -static int scsi_dev_type_resume(struct device *dev) +static int scsi_dev_type_resume(struct device *dev, bool runtime) { struct device_driver *drv; int err = 0; + int (*resume)(struct device *); drv = dev->driver; - if (drv && drv->resume) - err = drv->resume(dev); + if (runtime && drv && drv->pm && drv->pm->runtime_resume) + resume = drv->pm->runtime_resume; + else + resume = drv ? drv->resume : NULL; + if (resume) + err = resume(dev); scsi_device_resume(to_scsi_device(dev)); dev_dbg(dev, "scsi resume: %d\n", err); return err; @@ -85,7 +90,7 @@ static int scsi_bus_resume_common(struct device *dev) pm_runtime_get_sync(dev->parent); if (scsi_is_sdev_device(dev)) - err = scsi_dev_type_resume(dev); + err = scsi_dev_type_resume(dev, false); if (err == 0) { pm_runtime_disable(dev); pm_runtime_set_active(dev); @@ -160,7 +165,7 @@ static int scsi_runtime_resume(struct device *dev) dev_dbg(dev, "scsi_runtime_resume\n"); if (scsi_is_sdev_device(dev)) - err = scsi_dev_type_resume(dev); + err = scsi_dev_type_resume(dev, true); /* Insert hooks here for targets, hosts, and transport classes */ -- 1.7.11.3