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Message-ID: <562B378D.10903@huawei.com> Date: Sat, 24 Oct 2015 15:47:25 +0800 From: Hanjun Guo <guohanjun@...wei.com> To: Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>, <bhelgaas@...gle.com>, <rjw@...ysocki.net>, <lenb@...nel.org>, <catalin.marinas@....com>, <will.deacon@....com> CC: <hanjun.guo@...aro.org>, <thomas.lendacky@....com>, <herbert@...dor.apana.org.au>, <davem@...emloft.net>, <linux-acpi@...r.kernel.org>, <linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>, "Rob Herring" <robh+dt@...nel.org>, Murali Karicheri <m-karicheri2@...com> Subject: Re: [PATCH V4 8/8] PCI: ACPI: Add support for PCI device DMA coherency On 2015/10/21 23:52, Suravee Suthikulpanit wrote: > This patch adds support for setting up PCI device DMA coherency from > ACPI _CCA object that should normally be specified in the DSDT node > of its PCI host bridge. > > Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@....com> > CC: Bjorn Helgaas <bhelgaas@...gle.com> > CC: Catalin Marinas <catalin.marinas@....com> > CC: Rob Herring <robh+dt@...nel.org> > CC: Will Deacon <will.deacon@....com> > CC: Rafael J. Wysocki <rjw@...ysocki.net> > CC: Murali Karicheri <m-karicheri2@...com> > --- > drivers/pci/probe.c | 19 ++++++++++++++----- > 1 file changed, 14 insertions(+), 5 deletions(-) > > diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c > index 09264f8..6e9f7e6 100644 > --- a/drivers/pci/probe.c > +++ b/drivers/pci/probe.c > @@ -1642,17 +1642,26 @@ static void pci_set_msi_domain(struct pci_dev *dev) > * @dev: ptr to pci_dev struct of the PCI device > * > * Function to update PCI devices's DMA configuration using the same > - * info from the OF node of host bridge's parent (if any). > + * info from the OF node or ACPI node of host bridge's parent (if any). > */ > static void pci_dma_configure(struct pci_dev *dev) > { > struct device *bridge = pci_get_host_bridge_device(dev); > > if (IS_ENABLED(CONFIG_OF) && dev->dev.of_node) { > - if (!bridge->parent) > - return; > - > - of_dma_configure(&dev->dev, bridge->parent->of_node); > + if (bridge->parent) > + of_dma_configure(&dev->dev, > + bridge->parent->of_node); > + } else if (has_acpi_companion(bridge)) { > + struct acpi_device *adev = to_acpi_node(bridge->fwnode); It's to_acpi_device_node() now in Rafael's tree. Thanks Hanjun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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