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authorScott Bauer <scott.bauer@intel.com>2017-08-11 14:54:32 -0600
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-02-12 19:45:02 +0100
commitb6666764b6a0a99308a126a8314523763d31978b (patch)
treeb36559ed9f6480b06c7b71e22b79c7a41e9399a5
parent7f3829912e0ca5cfdca0fe6164fca4142ad87a9e (diff)
downloadlinux-linaro-stable-b6666764b6a0a99308a126a8314523763d31978b.tar.gz
PCI: vmd: Free up IRQs on suspend path
commit e2b1820bd5d0962d6f271b0d47c3a0e38647df2f upstream. 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 <scott.bauer@intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jon Derrick <jonathan.derrick@intel.com> Signed-off-by: Sushma Kalakota <sushmax.kalakota@intel.com>
-rw-r--r--drivers/pci/host/vmd.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/pci/host/vmd.c b/drivers/pci/host/vmd.c
index 0e7f8f319fe3..9a60098f7b7d 100644
--- a/drivers/pci/host/vmd.c
+++ b/drivers/pci/host/vmd.c
@@ -731,6 +731,11 @@ 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;
@@ -739,6 +744,16 @@ 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;