ata: add ata port hibernate callbacks (33574d68) · Commits · e / devices / android_kernel_teracube_2e

drivers/ata/libata-core.c

+36 −4

Original line number	Diff line number	Diff line
		@@ -5281,12 +5281,24 @@ static int ata_port_request_pm(struct ata_port *ap, pm_message_t mesg,

		#define to_ata_port(d) container_of(d, struct ata_port, tdev)

		static int ata_port_suspend_common(struct device *dev)
		static int ata_port_suspend_common(struct device *dev, pm_message_t mesg)
		{
		struct ata_port *ap = to_ata_port(dev);
		unsigned int ehi_flags = ATA_EHI_QUIET;
		int rc;

		rc = ata_port_request_pm(ap, PMSG_SUSPEND, 0, ATA_EHI_QUIET, 1);
		/*
		* On some hardware, device fails to respond after spun down
		* for suspend. As the device won't be used before being
		* resumed, we don't need to touch the device. Ask EH to skip
		* the usual stuff and proceed directly to suspend.
		*
		* http://thread.gmane.org/gmane.linux.ide/46764
		*/
		if (mesg.event == PM_EVENT_SUSPEND)
		ehi_flags \|= ATA_EHI_NO_AUTOPSY \| ATA_EHI_NO_RECOVERY;

		rc = ata_port_request_pm(ap, mesg, 0, ehi_flags, 1);
		return rc;
		}

		@@ -5295,7 +5307,23 @@ static int ata_port_suspend(struct device *dev)
		if (pm_runtime_suspended(dev))
		return 0;

		return ata_port_suspend_common(dev);
		return ata_port_suspend_common(dev, PMSG_SUSPEND);
		}

		static int ata_port_do_freeze(struct device *dev)
		{
		if (pm_runtime_suspended(dev))
		pm_runtime_resume(dev);

		return ata_port_suspend_common(dev, PMSG_FREEZE);
		}

		static int ata_port_poweroff(struct device *dev)
		{
		if (pm_runtime_suspended(dev))
		return 0;

		return ata_port_suspend_common(dev, PMSG_HIBERNATE);
		}

		static int ata_port_resume_common(struct device *dev)
		@@ -5330,8 +5358,12 @@ static int ata_port_runtime_idle(struct device *dev)
		static const struct dev_pm_ops ata_port_pm_ops = {
		.suspend = ata_port_suspend,
		.resume = ata_port_resume,
		.freeze = ata_port_do_freeze,
		.thaw = ata_port_resume,
		.poweroff = ata_port_poweroff,
		.restore = ata_port_resume,

		.runtime_suspend = ata_port_suspend_common,
		.runtime_suspend = ata_port_suspend,
		.runtime_resume = ata_port_resume_common,
		.runtime_idle = ata_port_runtime_idle,
		};