PCI: mvebu: Save MSI controller in pci_sys_data

Save MSI controller in pci_sys_data instead of assigning MSI controller
pointer to every PCI bus in .add_bus().

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

1 files changed, 4 insertions, 7 deletions

diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/host/pci-mvebu.c
index cf907fec0652..9aa810b733a8 100644
--- a/drivers/pci/host/pci-mvebu.c
+++ b/drivers/pci/host/pci-mvebu.c
@@ -774,12 +774,6 @@ static struct pci_bus *mvebu_pcie_scan_bus(int nr, struct pci_sys_data *sys)
         return bus;
 }
 
-static void mvebu_pcie_add_bus(struct pci_bus *bus)
-{
-        struct mvebu_pcie *pcie = sys_to_pcie(bus->sysdata);
-        bus->msi = pcie->msi;
-}
-
 static resource_size_t mvebu_pcie_align_resource(struct pci_dev *dev,
                                                  const struct resource *res,
                                                  resource_size_t start,
@@ -816,6 +810,10 @@ static void mvebu_pcie_enable(struct mvebu_pcie *pcie)
 
         memset(&hw, 0, sizeof(hw));
 
+#ifdef CONFIG_PCI_MSI
+        hw.msi_ctrl = pcie->msi;
+#endif
+
         hw.nr_controllers = 1;
         hw.private_data   = (void **)&pcie;
         hw.setup          = mvebu_pcie_setup;
@@ -823,7 +821,6 @@ static void mvebu_pcie_enable(struct mvebu_pcie *pcie)
         hw.map_irq        = of_irq_parse_and_map_pci;
         hw.ops            = &mvebu_pcie_ops;
         hw.align_resource = mvebu_pcie_align_resource;
-        hw.add_bus        = mvebu_pcie_add_bus;
 
         pci_common_init(&hw);
 }