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PCI: pciehp: Implement runtime PM callbacks

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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>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Mika Westerberg 2018-09-27 16:41:49 -05:00 • committed by Bjorn Helgaas
parent 94c7993fb5
commit 9c62f0bfb8
1 changed files with 18 additions and 0 deletions
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18
drivers/pci/hotplug/pciehp_core.c
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@ -288,6 +288,22 @@ static int pciehp_resume(struct pcie_device *dev)
return 0; return 0;
} }
static int pciehp_runtime_resume(struct pcie_device *dev)
{
struct controller *ctrl = get_service_data(dev);
/* 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 ((ctrl->state == ON_STATE || ctrl->state == BLINKINGOFF_STATE) &&
pme_is_native(dev))
pcie_clear_hotplug_events(ctrl);
return pciehp_resume(dev);
}
#endif /* PM */ #endif /* PM */
static struct pcie_port_service_driver hpdriver_portdrv = { static struct pcie_port_service_driver hpdriver_portdrv = {
@ -302,6 +318,8 @@ static struct pcie_port_service_driver hpdriver_portdrv = {
.suspend = pciehp_suspend, .suspend = pciehp_suspend,
.resume_noirq = pciehp_resume_noirq, .resume_noirq = pciehp_resume_noirq,
.resume = pciehp_resume, .resume = pciehp_resume,
.runtime_suspend = pciehp_suspend,
.runtime_resume = pciehp_runtime_resume,
#endif /* PM */ #endif /* PM */
}; };