PCI: dra7xx: Pass device-specific struct to internal functions

Only interfaces used from outside the driver, e.g., those called by the
DesignWare core, need to accept pointers to the generic struct pcie_port.
Internal interfaces can accept pointers to the device-specific struct,
which makes them more straightforward.  No functional change intended.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/drivers/pci/host/pci-dra7xx.c b/drivers/pci/host/pci-dra7xx.c
index 66077d0..efb24b8 100644 (file)
--- a/drivers/pci/host/pci-dra7xx.c
+++ b/drivers/pci/host/pci-dra7xx.c
@@ -91,9 +91,9 @@ static int dra7xx_pcie_link_up(struct pcie_port *pp)
        return !!(reg & LINK_UP);
 }
 
-static int dra7xx_pcie_establish_link(struct pcie_port *pp)
+static int dra7xx_pcie_establish_link(struct dra7xx_pcie *dra7xx)
 {
-       struct dra7xx_pcie *dra7xx = to_dra7xx_pcie(pp);
+       struct pcie_port *pp = &dra7xx->pp;
        struct device *dev = pp->dev;
        u32 reg;
 
@@ -109,10 +109,8 @@ static int dra7xx_pcie_establish_link(struct pcie_port *pp)
        return dw_pcie_wait_for_link(pp);
 }
 
-static void dra7xx_pcie_enable_interrupts(struct pcie_port *pp)
+static void dra7xx_pcie_enable_interrupts(struct dra7xx_pcie *dra7xx)
 {
-       struct dra7xx_pcie *dra7xx = to_dra7xx_pcie(pp);
-
        dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQSTATUS_MAIN,
                           ~INTERRUPTS);
        dra7xx_pcie_writel(dra7xx,
@@ -131,6 +129,8 @@ static void dra7xx_pcie_enable_interrupts(struct pcie_port *pp)
 
 static void dra7xx_pcie_host_init(struct pcie_port *pp)
 {
+       struct dra7xx_pcie *dra7xx = to_dra7xx_pcie(pp);
+
        pp->io_base &= DRA7XX_CPU_TO_BUS_ADDR;
        pp->mem_base &= DRA7XX_CPU_TO_BUS_ADDR;
        pp->cfg0_base &= DRA7XX_CPU_TO_BUS_ADDR;
@@ -138,10 +138,10 @@ static void dra7xx_pcie_host_init(struct pcie_port *pp)
 
        dw_pcie_setup_rc(pp);
 
-       dra7xx_pcie_establish_link(pp);
+       dra7xx_pcie_establish_link(dra7xx);
        if (IS_ENABLED(CONFIG_PCI_MSI))
                dw_pcie_msi_init(pp);
-       dra7xx_pcie_enable_interrupts(pp);
+       dra7xx_pcie_enable_interrupts(dra7xx);
 }
 
 static struct pcie_host_ops dra7xx_pcie_host_ops = {
@@ -185,8 +185,8 @@ static int dra7xx_pcie_init_irq_domain(struct pcie_port *pp)
 
 static irqreturn_t dra7xx_pcie_msi_irq_handler(int irq, void *arg)
 {
-       struct pcie_port *pp = arg;
-       struct dra7xx_pcie *dra7xx = to_dra7xx_pcie(pp);
+       struct dra7xx_pcie *dra7xx = arg;
+       struct pcie_port *pp = &dra7xx->pp;
        u32 reg;
 
        reg = dra7xx_pcie_readl(dra7xx, PCIECTRL_DRA7XX_CONF_IRQSTATUS_MSI);
@@ -283,7 +283,7 @@ static int __init dra7xx_add_pcie_port(struct dra7xx_pcie *dra7xx,
 
        ret = devm_request_irq(dev, pp->irq, dra7xx_pcie_msi_irq_handler,
                               IRQF_SHARED | IRQF_NO_THREAD,
-                              "dra7-pcie-msi", pp);
+                              "dra7-pcie-msi", dra7xx);
        if (ret) {
                dev_err(dev, "failed to request irq\n");
                return ret;