On 07/16/2012 09:35 PM, Shengzhou Liu wrote: > On some platforms, root port has neither MSI/MSI-X nor INTx interrupt > generated in RC mode. In this case, we have to use other interrupt(i.e. > system shared interrupt) for port service irq to have AER, Hot-plug, etc, > services to work. > > Signed-off-by: Shengzhou Liu <Shengzhou.Liu@xxxxxxxxxxxxx> > --- > drivers/pci/pcie/portdrv_core.c | 9 +++++++-- > 1 files changed, 7 insertions(+), 2 deletions(-) > > diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c > index 75915b3..a855254 100644 > --- a/drivers/pci/pcie/portdrv_core.c > +++ b/drivers/pci/pcie/portdrv_core.c > @@ -212,8 +212,13 @@ static int init_service_irqs(struct pci_dev *dev, int *irqs, int mask) > if (!pcie_port_enable_msix(dev, irqs, mask)) > return 0; > > - /* We're not going to use MSI-X, so try MSI and fall back to INTx */ > - if (!pci_enable_msi(dev) || dev->pin) > + /* > + * We're not going to use MSI-X, so try MSI and fall back to INTx. > + * If neither MSI/MSI-X nor INTx available, try other interrupt. (On > + * some platforms, root port doesn't support generating MSI/MSI-X/INTx > + * in RC mode) > + */ > + if (!pci_enable_msi(dev) || dev->irq) > irq = dev->irq; What about the other usage of dev->pin a few lines up? -Scott -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
