diff options
| author | Suthikulpanit, Suravee <Suravee.Suthikulpanit@amd.com> | 2015-10-28 15:50:53 -0700 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-11-07 01:29:22 +0100 |
| commit | 50230713b63941f4b6b562eea0834f751aa0801e (patch) | |
| tree | 6f76ae7c4bab2736323c3404e6bf292e559d466d /drivers/pci | |
| parent | 37efbe20fb19cee43d95b7ba9e54d5d0b00c0d67 (diff) | |
| download | linux-50230713b63941f4b6b562eea0834f751aa0801e.tar.bz2 | |
PCI: OF: Move of_pci_dma_configure() to pci_dma_configure()
This patch move of_pci_dma_configure() to a more generic
pci_dma_configure(), which can be extended by non-OF code (e.g. ACPI).
This has no functional change.
Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Acked-by: Rob Herring <robh+dt@kernel.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/probe.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 8361d27e5eca..d35f83d80b15 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -6,6 +6,7 @@ #include <linux/delay.h> #include <linux/init.h> #include <linux/pci.h> +#include <linux/of_device.h> #include <linux/of_pci.h> #include <linux/pci_hotplug.h> #include <linux/slab.h> @@ -1633,6 +1634,25 @@ static void pci_set_msi_domain(struct pci_dev *dev) dev_get_msi_domain(&dev->bus->dev)); } +/** + * pci_dma_configure - Setup DMA configuration + * @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). + */ +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) + of_dma_configure(&dev->dev, bridge->parent->of_node); + } + + pci_put_host_bridge_device(bridge); +} + void pci_device_add(struct pci_dev *dev, struct pci_bus *bus) { int ret; @@ -1646,7 +1666,7 @@ void pci_device_add(struct pci_dev *dev, struct pci_bus *bus) dev->dev.dma_mask = &dev->dma_mask; dev->dev.dma_parms = &dev->dma_parms; dev->dev.coherent_dma_mask = 0xffffffffull; - of_pci_dma_configure(dev); + pci_dma_configure(dev); pci_set_dma_max_seg_size(dev, 65536); pci_set_dma_seg_boundary(dev, 0xffffffff); |