4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Scott Bauer <scott.bauer@xxxxxxxxx>
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@xxxxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Acked-by: Keith Busch <keith.busch@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Reviewed-by: Jon Derrick <jonathan.derrick@xxxxxxxxx>
Signed-off-by: Sushma Kalakota <sushmax.kalakota@xxxxxxxxx>
---
drivers/pci/host/vmd.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
--- a/drivers/pci/host/vmd.c
+++ b/drivers/pci/host/vmd.c
@@ -731,6 +731,11 @@ static void vmd_remove(struct pci_dev *d
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 *de
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;
