On Sun, 18 Jan 2015, vichy wrote: > after tracing the source, I only can find the ehci_suspend is called > when system hibernate/suspend. > rpm_suspend use below method to find out suspend callback > if (dev->pm_domain) > callback = dev->pm_domain->ops.runtime_suspend; > else if (dev->type && dev->type->pm) > callback = dev->type->pm->runtime_suspend; > else if (dev->class && dev->class->pm) > callback = dev->class->pm->runtime_suspend; > else if (dev->bus && dev->bus->pm) > callback = dev->bus->pm->runtime_suspend; > else > callback = NULL; > > ehci_suspend doesn't register any one of above function. ehci_pci_init() in ehci_pci.c stores ehci_suspend in ehci_pci_hc_driver.pci_suspend. That pointer is called by suspend_common() in hcd-pci.c, which is called by both hcd_pci_suspend() and hcd_pci_runtime_suspend(). Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
