From ffe82fa66afb19c2d5a4b8a0da6d05df2b5a6dc5 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Thu, 6 Oct 2016 13:42:08 -0500 Subject: [PATCH] PCI: spear: 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 --- drivers/pci/host/pcie-spear13xx.c | 29 ++++++++++++++++------------- 1 file changed, 16 insertions(+), 13 deletions(-) diff --git a/drivers/pci/host/pcie-spear13xx.c b/drivers/pci/host/pcie-spear13xx.c index 73f17dac1364..26e905d8922c 100644 --- a/drivers/pci/host/pcie-spear13xx.c +++ b/drivers/pci/host/pcie-spear13xx.c @@ -72,11 +72,11 @@ struct pcie_app_reg { #define to_spear13xx_pcie(x) container_of(x, struct spear13xx_pcie, pp) -static int spear13xx_pcie_establish_link(struct pcie_port *pp) +static int spear13xx_pcie_establish_link(struct spear13xx_pcie *spear13xx_pcie) { - u32 val; - struct spear13xx_pcie *spear13xx_pcie = to_spear13xx_pcie(pp); + struct pcie_port *pp = &spear13xx_pcie->pp; struct pcie_app_reg *app_reg = spear13xx_pcie->app_base; + u32 val; u32 exp_cap_off = EXP_CAP_ID_OFFSET; if (dw_pcie_link_up(pp)) { @@ -133,9 +133,9 @@ static int spear13xx_pcie_establish_link(struct pcie_port *pp) static irqreturn_t spear13xx_pcie_irq_handler(int irq, void *arg) { - struct pcie_port *pp = arg; - struct spear13xx_pcie *spear13xx_pcie = to_spear13xx_pcie(pp); + struct spear13xx_pcie *spear13xx_pcie = arg; struct pcie_app_reg *app_reg = spear13xx_pcie->app_base; + struct pcie_port *pp = &spear13xx_pcie->pp; unsigned int status; status = readl(&app_reg->int_sts); @@ -150,9 +150,9 @@ static irqreturn_t spear13xx_pcie_irq_handler(int irq, void *arg) return IRQ_HANDLED; } -static void spear13xx_pcie_enable_interrupts(struct pcie_port *pp) +static void spear13xx_pcie_enable_interrupts(struct spear13xx_pcie *spear13xx_pcie) { - struct spear13xx_pcie *spear13xx_pcie = to_spear13xx_pcie(pp); + struct pcie_port *pp = &spear13xx_pcie->pp; struct pcie_app_reg *app_reg = spear13xx_pcie->app_base; /* Enable MSI interrupt */ @@ -176,8 +176,10 @@ static int spear13xx_pcie_link_up(struct pcie_port *pp) static void spear13xx_pcie_host_init(struct pcie_port *pp) { - spear13xx_pcie_establish_link(pp); - spear13xx_pcie_enable_interrupts(pp); + struct spear13xx_pcie *spear13xx_pcie = to_spear13xx_pcie(pp); + + spear13xx_pcie_establish_link(spear13xx_pcie); + spear13xx_pcie_enable_interrupts(spear13xx_pcie); } static struct pcie_host_ops spear13xx_pcie_host_ops = { @@ -185,9 +187,10 @@ static struct pcie_host_ops spear13xx_pcie_host_ops = { .host_init = spear13xx_pcie_host_init, }; -static int spear13xx_add_pcie_port(struct pcie_port *pp, - struct platform_device *pdev) +static int spear13xx_add_pcie_port(struct spear13xx_pcie *spear13xx_pcie, + struct platform_device *pdev) { + struct pcie_port *pp = &spear13xx_pcie->pp; struct device *dev = &pdev->dev; int ret; @@ -198,7 +201,7 @@ static int spear13xx_add_pcie_port(struct pcie_port *pp, } ret = devm_request_irq(dev, pp->irq, spear13xx_pcie_irq_handler, IRQF_SHARED | IRQF_NO_THREAD, - "spear1340-pcie", pp); + "spear1340-pcie", spear13xx_pcie); if (ret) { dev_err(dev, "failed to request irq %d\n", pp->irq); return ret; @@ -268,7 +271,7 @@ static int spear13xx_pcie_probe(struct platform_device *pdev) if (of_property_read_bool(np, "st,pcie-is-gen1")) spear13xx_pcie->is_gen1 = true; - ret = spear13xx_add_pcie_port(pp, pdev); + ret = spear13xx_add_pcie_port(spear13xx_pcie, pdev); if (ret < 0) goto fail_clk;