ioat/dca: Use dev_is_pci() to check whether it is pci device

Use PCI standard marco dev_is_pci() instead of directly compare
pci_bus_type to check whether it is pci device.

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --git a/drivers/dma/ioat/dca.c b/drivers/dma/ioat/dca.c
index 9e84d5b..7900963 100644 (file)
--- a/drivers/dma/ioat/dca.c
+++ b/drivers/dma/ioat/dca.c
@@ -147,7 +147,7 @@ static int ioat_dca_add_requester(struct dca_provider *dca, struct device *dev)
        u16 id;
 
        /* This implementation only supports PCI-Express */
-       if (dev->bus != &pci_bus_type)
+       if (!dev_is_pci(dev))
                return -ENODEV;
        pdev = to_pci_dev(dev);
        id = dcaid_from_pcidev(pdev);
@@ -179,7 +179,7 @@ static int ioat_dca_remove_requester(struct dca_provider *dca,
        int i;
 
        /* This implementation only supports PCI-Express */
-       if (dev->bus != &pci_bus_type)
+       if (!dev_is_pci(dev))
                return -ENODEV;
        pdev = to_pci_dev(dev);
 
@@ -320,7 +320,7 @@ static int ioat2_dca_add_requester(struct dca_provider *dca, struct device *dev)
        u16 global_req_table;
 
        /* This implementation only supports PCI-Express */
-       if (dev->bus != &pci_bus_type)
+       if (!dev_is_pci(dev))
                return -ENODEV;
        pdev = to_pci_dev(dev);
        id = dcaid_from_pcidev(pdev);
@@ -354,7 +354,7 @@ static int ioat2_dca_remove_requester(struct dca_provider *dca,
        u16 global_req_table;
 
        /* This implementation only supports PCI-Express */
-       if (dev->bus != &pci_bus_type)
+       if (!dev_is_pci(dev))
                return -ENODEV;
        pdev = to_pci_dev(dev);
 
@@ -496,7 +496,7 @@ static int ioat3_dca_add_requester(struct dca_provider *dca, struct device *dev)
        u16 global_req_table;
 
        /* This implementation only supports PCI-Express */
-       if (dev->bus != &pci_bus_type)
+       if (!dev_is_pci(dev))
                return -ENODEV;
        pdev = to_pci_dev(dev);
        id = dcaid_from_pcidev(pdev);
@@ -530,7 +530,7 @@ static int ioat3_dca_remove_requester(struct dca_provider *dca,
        u16 global_req_table;
 
        /* This implementation only supports PCI-Express */
-       if (dev->bus != &pci_bus_type)
+       if (!dev_is_pci(dev))
                return -ENODEV;
        pdev = to_pci_dev(dev);