diff options
| -rw-r--r-- | drivers/pci/quirks.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index e7292065a1b1..bc8ebd945612 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3333,6 +3333,22 @@ int pci_dev_specific_reset(struct pci_dev *dev, int probe) return -ENOTTY; } +static void quirk_dma_func0_alias(struct pci_dev *dev) +{ + if (PCI_FUNC(dev->devfn) != 0) { + dev->dma_alias_devfn = PCI_DEVFN(PCI_SLOT(dev->devfn), 0); + dev->dev_flags |= PCI_DEV_FLAGS_DMA_ALIAS_DEVFN; + } +} + +/* + * https://bugzilla.redhat.com/show_bug.cgi?id=605888 + * + * Some Ricoh devices use function 0 as the PCIe requester ID for DMA. + */ +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe832, quirk_dma_func0_alias); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe476, quirk_dma_func0_alias); + static struct pci_dev *pci_func_0_dma_source(struct pci_dev *dev) { if (!PCI_FUNC(dev->devfn)) |