From e2b1820bd5d0962d6f271b0d47c3a0e38647df2f Mon Sep 17 00:00:00 2001 From: Scott Bauer Date: Fri, 11 Aug 2017 14:54:32 -0600 Subject: [PATCH] PCI: vmd: Free up IRQs on suspend path Free up the IRQs we request on the suspend path and reallocate them on the resume path. Fixes this error: CPU 111 disable failed: CPU has 9 vectors assigned and there are only 0 available. Error taking CPU111 down: -34 Non-boot CPUs are not disabled Enabling non-boot CPUs ... Signed-off-by: Scott Bauer Signed-off-by: Bjorn Helgaas Acked-by: Keith Busch --- drivers/pci/host/vmd.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/pci/host/vmd.c b/drivers/pci/host/vmd.c index 7e967a8784b2..4fe1756af010 100644 --- a/drivers/pci/host/vmd.c +++ b/drivers/pci/host/vmd.c @@ -763,6 +763,11 @@ static void vmd_remove(struct pci_dev *dev) static int vmd_suspend(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); + struct vmd_dev *vmd = pci_get_drvdata(pdev); + int i; + + for (i = 0; i < vmd->msix_count; i++) + devm_free_irq(dev, pci_irq_vector(pdev, i), &vmd->irqs[i]); pci_save_state(pdev); return 0; @@ -771,6 +776,16 @@ static int vmd_suspend(struct device *dev) static int vmd_resume(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); + struct vmd_dev *vmd = pci_get_drvdata(pdev); + int err, i; + + for (i = 0; i < vmd->msix_count; i++) { + err = devm_request_irq(dev, pci_irq_vector(pdev, i), + vmd_irq, IRQF_NO_THREAD, + "vmd", &vmd->irqs[i]); + if (err) + return err; + } pci_restore_state(pdev); return 0; -- 2.20.1