msi: Fix msi_remove_pci_irq_vectors.

Since msi_remove_pci_irq_vectors is designed to be called during
hotplug remove it is actively wrong to query the hardware and expect
meaningful results back.

To that end remove the pci_find_capability calls.  Testing
dev->msi_enabled and dev->msix_enabled gives us all of the information
we need.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 2 insertions, 6 deletions

diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 0df626cf47d8..529113dc3e22 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -854,13 +854,10 @@ void pci_disable_msix(struct pci_dev* dev)
  **/
 void msi_remove_pci_irq_vectors(struct pci_dev* dev)
 {
-        int pos;
-
         if (!pci_msi_enable || !dev)
                 return;
 
-        pos = pci_find_capability(dev, PCI_CAP_ID_MSI);
-        if (pos > 0 && dev->msi_enabled) {
+        if (dev->msi_enabled) {
                 if (irq_has_action(dev->first_msi_irq)) {
                         printk(KERN_WARNING "PCI: %s: msi_remove_pci_irq_vectors() "
                                "called without free_irq() on MSI irq %d\n",
@@ -869,8 +866,7 @@ void msi_remove_pci_irq_vectors(struct pci_dev* dev)
                 } else /* Release MSI irq assigned to this device */
                         msi_free_irq(dev, dev->first_msi_irq);
         }
-        pos = pci_find_capability(dev, PCI_CAP_ID_MSIX);
-        if (pos > 0 && dev->msix_enabled) {
+        if (dev->msix_enabled) {
                 int irq, head, tail = 0, warning = 0;
                 void __iomem *base = NULL;