diff options
Diffstat (limited to 'drivers/pci/host/pci-layerscape.c')
| -rw-r--r-- | drivers/pci/host/pci-layerscape.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/pci/host/pci-layerscape.c b/drivers/pci/host/pci-layerscape.c index 0f6dd4456409..3923bed93c7e 100644 --- a/drivers/pci/host/pci-layerscape.c +++ b/drivers/pci/host/pci-layerscape.c @@ -150,14 +150,37 @@ static void ls_pcie_host_init(struct pcie_port *pp) iowrite32(0, pcie->dbi + PCIE_DBI_RO_WR_EN); } +static int ls_pcie_msi_host_init(struct pcie_port *pp, + struct msi_controller *chip) +{ + struct device_node *msi_node; + struct device_node *np = pp->dev->of_node; + + /* + * The MSI domain is set by the generic of_msi_configure(). This + * .msi_host_init() function keeps us from doing the default MSI + * domain setup in dw_pcie_host_init() and also enforces the + * requirement that "msi-parent" exists. + */ + msi_node = of_parse_phandle(np, "msi-parent", 0); + if (!msi_node) { + dev_err(pp->dev, "failed to find msi-parent\n"); + return -EINVAL; + } + + return 0; +} + static struct pcie_host_ops ls1021_pcie_host_ops = { .link_up = ls1021_pcie_link_up, .host_init = ls1021_pcie_host_init, + .msi_host_init = ls_pcie_msi_host_init, }; static struct pcie_host_ops ls_pcie_host_ops = { .link_up = ls_pcie_link_up, .host_init = ls_pcie_host_init, + .msi_host_init = ls_pcie_msi_host_init, }; static struct ls_pcie_drvdata ls1021_drvdata = { |