| Message ID | 20180906155020.51700-8-mika.westerberg@linux.intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
| Series | PCI: Allow D3cold for PCIe hierarchies | expand |
On Thursday, September 6, 2018 5:50:17 PM CEST Mika Westerberg wrote: > Basically we need to do the same thing when runtime suspending than with > system sleep so re-use those operations here. This makes sure hotplug > interrupt does not trigger immediately when the link goes down. > > Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> > --- > drivers/pci/hotplug/pciehp_core.c | 19 +++++++++++++++++++ > 1 file changed, 19 insertions(+) > > diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c > index c9cf9c3b5f7f..25b2ea9f9242 100644 > --- a/drivers/pci/hotplug/pciehp_core.c > +++ b/drivers/pci/hotplug/pciehp_core.c > @@ -349,6 +349,23 @@ static int pciehp_resume(struct pcie_device *dev) > > return 0; > } > + > +static int pciehp_runtime_resume(struct pcie_device *dev) > +{ > + struct controller *ctrl = get_service_data(dev); > + struct slot *slot = ctrl->slot; > + > + /* pci_restore_state() just wrote to the Slot Control register */ > + ctrl->cmd_started = jiffies; > + ctrl->cmd_busy = true; > + > + /* clear spurious events from rediscovery of inserted card */ > + if ((slot->state == ON_STATE || slot->state == BLINKINGOFF_STATE) && > + pme_is_native(dev)) > + pcie_clear_hotplug_events(ctrl); > + > + return pciehp_resume(dev); > +} > #endif /* PM */ > > static struct pcie_port_service_driver hpdriver_portdrv = { > @@ -363,6 +380,8 @@ static struct pcie_port_service_driver hpdriver_portdrv = { > .suspend = pciehp_suspend, > .resume_noirq = pciehp_resume_noirq, > .resume = pciehp_resume, > + .runtime_suspend = pciehp_suspend, > + .runtime_resume = pciehp_runtime_resume, > #endif /* PM */ > }; > > Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c index c9cf9c3b5f7f..25b2ea9f9242 100644 --- a/drivers/pci/hotplug/pciehp_core.c +++ b/drivers/pci/hotplug/pciehp_core.c @@ -349,6 +349,23 @@ static int pciehp_resume(struct pcie_device *dev) return 0; } + +static int pciehp_runtime_resume(struct pcie_device *dev) +{ + struct controller *ctrl = get_service_data(dev); + struct slot *slot = ctrl->slot; + + /* pci_restore_state() just wrote to the Slot Control register */ + ctrl->cmd_started = jiffies; + ctrl->cmd_busy = true; + + /* clear spurious events from rediscovery of inserted card */ + if ((slot->state == ON_STATE || slot->state == BLINKINGOFF_STATE) && + pme_is_native(dev)) + pcie_clear_hotplug_events(ctrl); + + return pciehp_resume(dev); +} #endif /* PM */ static struct pcie_port_service_driver hpdriver_portdrv = { @@ -363,6 +380,8 @@ static struct pcie_port_service_driver hpdriver_portdrv = { .suspend = pciehp_suspend, .resume_noirq = pciehp_resume_noirq, .resume = pciehp_resume, + .runtime_suspend = pciehp_suspend, + .runtime_resume = pciehp_runtime_resume, #endif /* PM */ };
Basically we need to do the same thing when runtime suspending than with system sleep so re-use those operations here. This makes sure hotplug interrupt does not trigger immediately when the link goes down. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> --- drivers/pci/hotplug/pciehp_core.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)