From: Mika Westerberg Date: Mon, 15 Apr 2019 08:41:42 +0000 (+0300) Subject: PCI/LINK: Disable bandwidth notification interrupt during suspend X-Git-Tag: v5.2-rc1~70^2~18^2 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6056bed93b4f93707b0564aa418b9c06b613ff04;p=thirdparty%2Fkernel%2Flinux.git PCI/LINK: Disable bandwidth notification interrupt during suspend 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 Signed-off-by: Mika Westerberg Signed-off-by: Bjorn Helgaas --- diff --git a/drivers/pci/pcie/bw_notification.c b/drivers/pci/pcie/bw_notification.c index d2eae3b7cc0f7..971eb7e90fb09 100644 --- a/drivers/pci/pcie/bw_notification.c +++ b/drivers/pci/pcie/bw_notification.c @@ -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, };