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PCI/LINK: Disable bandwidth notification interrupt during suspend

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If the bandwidth notification interrupt is left unmasked when entering
suspend to idle, it triggers immediately bringing the system back to
working state.

To keep that from happening, disable the interrupt when entering system
sleep and enable it again during resume.

Reported-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Mika Westerberg 2019-04-15 11:41:42 +03:00 committed by Bjorn Helgaas
parent 9e98c678c2
commit 6056bed93b
1 changed files with 14 additions and 0 deletions
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14
drivers/pci/pcie/bw_notification.c
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@ -96,11 +96,25 @@ static void pcie_bandwidth_notification_remove(struct pcie_device *srv)
free_irq(srv->irq, srv);
}
static int pcie_bandwidth_notification_suspend(struct pcie_device *srv)
{
pcie_disable_link_bandwidth_notification(srv->port);
return 0;
}
static int pcie_bandwidth_notification_resume(struct pcie_device *srv)
{
pcie_enable_link_bandwidth_notification(srv->port);
return 0;
}
static struct pcie_port_service_driver pcie_bandwidth_notification_driver = {
.name = "pcie_bw_notification",
.port_type = PCIE_ANY_PORT,
.service = PCIE_PORT_SERVICE_BWNOTIF,
.probe = pcie_bandwidth_notification_probe,
.suspend = pcie_bandwidth_notification_suspend,
.resume = pcie_bandwidth_notification_resume,
.remove = pcie_bandwidth_notification_remove,
};