It's possible that device got IRQ 0 before initialized. Then IRQ 0 would be disabled by pci_reset_function()... Reviewed-by: Matthew Wilcox <willy@xxxxxxxxxxxxxxx> Signed-off-by: Sheng Yang <sheng@xxxxxxxxxxxxxxx> --- drivers/pci/pci.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 21f2ac6..28af496 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1832,7 +1832,7 @@ int pci_reset_function(struct pci_dev *dev) if (!(cap & PCI_EXP_DEVCAP_FLR)) return -ENOTTY; - if (!dev->msi_enabled && !dev->msix_enabled) + if (!dev->msi_enabled && !dev->msix_enabled && dev->irq != 0) disable_irq(dev->irq); pci_save_state(dev); @@ -1841,7 +1841,7 @@ int pci_reset_function(struct pci_dev *dev) r = pci_execute_reset_function(dev); pci_restore_state(dev); - if (!dev->msi_enabled && !dev->msix_enabled) + if (!dev->msi_enabled && !dev->msix_enabled && dev->irq != 0) enable_irq(dev->irq); return r; -- 1.5.4.5 -- 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
