powerpc/MSI: Fix race condition in tearing down MSI interrupts

[pandora-kernel.git] / arch / powerpc / platforms / powernv / pci.c

diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
index bc6d4e0..f2dd772 100644 (file)
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -99,6 +99,7 @@ void pnv_teardown_msi_irqs(struct pci_dev *pdev)
        struct pci_controller *hose = pci_bus_to_host(pdev->bus);
        struct pnv_phb *phb = hose->private_data;
        struct msi_desc *entry;
+       irq_hw_number_t hwirq;
 
        if (WARN_ON(!phb))
                return;
@@ -106,10 +107,10 @@ void pnv_teardown_msi_irqs(struct pci_dev *pdev)
        for_each_pci_msi_entry(entry, pdev) {
                if (entry->irq == NO_IRQ)
                        continue;
+               hwirq = virq_to_hw(entry->irq);
                irq_set_msi_desc(entry->irq, NULL);
-               msi_bitmap_free_hwirqs(&phb->msi_bmp,
-                       virq_to_hw(entry->irq) - phb->msi_base, 1);
                irq_dispose_mapping(entry->irq);
+               msi_bitmap_free_hwirqs(&phb->msi_bmp, hwirq - phb->msi_base, 1);
        }
 }
 #endif /* CONFIG_PCI_MSI */
@@ -761,17 +762,6 @@ void pnv_pci_dma_dev_setup(struct pci_dev *pdev)
                phb->dma_dev_setup(phb, pdev);
 }
 
-u64 pnv_pci_dma_get_required_mask(struct pci_dev *pdev)
-{
-       struct pci_controller *hose = pci_bus_to_host(pdev->bus);
-       struct pnv_phb *phb = hose->private_data;
-
-       if (phb && phb->dma_get_required_mask)
-               return phb->dma_get_required_mask(phb, pdev);
-
-       return __dma_get_required_mask(&pdev->dev);
-}
-
 void pnv_pci_shutdown(void)
 {
        struct pci_controller *hose;