PCI: rcar: Add local struct device pointers

Use a local "struct device *dev" for brevity and consistency with other
drivers.  No functional change intended.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/host/pcie-rcar.c
index e06b1d3b4dea60e145d563ce87d463d1831e1b93..821d38a0e1ff83536fe8445657cde708d25cd69b 100644 (file)
--- a/drivers/pci/host/pcie-rcar.c
+++ b/drivers/pci/host/pcie-rcar.c
@@ -397,6 +397,7 @@ static int rcar_pcie_setup(struct list_head *resource, struct rcar_pcie *pci)
 
 static void rcar_pcie_force_speedup(struct rcar_pcie *pcie)
 {
+       struct device *dev = pcie->dev;
        unsigned int timeout = 1000;
        u32 macsr;
 
@@ -404,7 +405,7 @@ static void rcar_pcie_force_speedup(struct rcar_pcie *pcie)
                return;
 
        if (rcar_pci_read_reg(pcie, MACCTLR) & SPEED_CHANGE) {
-               dev_err(pcie->dev, "Speed change already in progress\n");
+               dev_err(dev, "Speed change already in progress\n");
                return;
        }
 
@@ -433,7 +434,7 @@ static void rcar_pcie_force_speedup(struct rcar_pcie *pcie)
                        rcar_pci_write_reg(pcie, macsr, MACSR);
 
                        if (macsr & SPCHGFAIL)
-                               dev_err(pcie->dev, "Speed change failed\n");
+                               dev_err(dev, "Speed change failed\n");
 
                        goto done;
                }
@@ -441,15 +442,16 @@ static void rcar_pcie_force_speedup(struct rcar_pcie *pcie)
                msleep(1);
        };
 
-       dev_err(pcie->dev, "Speed change timed out\n");
+       dev_err(dev, "Speed change timed out\n");
 
 done:
-       dev_info(pcie->dev, "Current link speed is %s GT/s\n",
+       dev_info(dev, "Current link speed is %s GT/s\n",
                 (macsr & LINK_SPEED) == LINK_SPEED_5_0GTS ? "5" : "2.5");
 }
 
 static int rcar_pcie_enable(struct rcar_pcie *pcie)
 {
+       struct device *dev = pcie->dev;
        struct pci_bus *bus, *child;
        LIST_HEAD(res);
 
@@ -461,14 +463,14 @@ static int rcar_pcie_enable(struct rcar_pcie *pcie)
        pci_add_flags(PCI_REASSIGN_ALL_RSRC | PCI_REASSIGN_ALL_BUS);
 
        if (IS_ENABLED(CONFIG_PCI_MSI))
-               bus = pci_scan_root_bus_msi(pcie->dev, pcie->root_bus_nr,
+               bus = pci_scan_root_bus_msi(dev, pcie->root_bus_nr,
                                &rcar_pcie_ops, pcie, &res, &pcie->msi.chip);
        else
-               bus = pci_scan_root_bus(pcie->dev, pcie->root_bus_nr,
+               bus = pci_scan_root_bus(dev, pcie->root_bus_nr,
                                &rcar_pcie_ops, pcie, &res);
 
        if (!bus) {
-               dev_err(pcie->dev, "Scanning rootbus failed");
+               dev_err(dev, "Scanning rootbus failed");
                return -ENODEV;
        }
 
@@ -487,6 +489,7 @@ static int rcar_pcie_enable(struct rcar_pcie *pcie)
 
 static int phy_wait_for_ack(struct rcar_pcie *pcie)
 {
+       struct device *dev = pcie->dev;
        unsigned int timeout = 100;
 
        while (timeout--) {
@@ -496,7 +499,7 @@ static int phy_wait_for_ack(struct rcar_pcie *pcie)
                udelay(100);
        }
 
-       dev_err(pcie->dev, "Access to PCIe phy timed out\n");
+       dev_err(dev, "Access to PCIe phy timed out\n");
 
        return -ETIMEDOUT;
 }
@@ -697,6 +700,7 @@ static irqreturn_t rcar_pcie_msi_irq(int irq, void *data)
 {
        struct rcar_pcie *pcie = data;
        struct rcar_msi *msi = &pcie->msi;
+       struct device *dev = pcie->dev;
        unsigned long reg;
 
        reg = rcar_pci_read_reg(pcie, PCIEMSIFR);
@@ -717,10 +721,10 @@ static irqreturn_t rcar_pcie_msi_irq(int irq, void *data)
                        if (test_bit(index, msi->used))
                                generic_handle_irq(irq);
                        else
-                               dev_info(pcie->dev, "unhandled MSI\n");
+                               dev_info(dev, "unhandled MSI\n");
                } else {
                        /* Unknown MSI, just clear it */
-                       dev_dbg(pcie->dev, "unexpected MSI\n");
+                       dev_dbg(dev, "unexpected MSI\n");
                }
 
                /* see if there's any more pending in this vector */
@@ -843,22 +847,22 @@ static const struct irq_domain_ops msi_domain_ops = {
 
 static int rcar_pcie_enable_msi(struct rcar_pcie *pcie)
 {
-       struct platform_device *pdev = to_platform_device(pcie->dev);
+       struct device *dev = pcie->dev;
        struct rcar_msi *msi = &pcie->msi;
        unsigned long base;
        int err, i;
 
        mutex_init(&msi->lock);
 
-       msi->chip.dev = pcie->dev;
+       msi->chip.dev = dev;
        msi->chip.setup_irq = rcar_msi_setup_irq;
        msi->chip.setup_irqs = rcar_msi_setup_irqs;
        msi->chip.teardown_irq = rcar_msi_teardown_irq;
 
-       msi->domain = irq_domain_add_linear(pcie->dev->of_node, INT_PCI_MSI_NR,
+       msi->domain = irq_domain_add_linear(dev->of_node, INT_PCI_MSI_NR,
                                            &msi_domain_ops, &msi->chip);
        if (!msi->domain) {
-               dev_err(&pdev->dev, "failed to create IRQ domain\n");
+               dev_err(dev, "failed to create IRQ domain\n");
                return -ENOMEM;
        }
 
@@ -866,19 +870,19 @@ static int rcar_pcie_enable_msi(struct rcar_pcie *pcie)
                irq_create_mapping(msi->domain, i);
 
        /* Two irqs are for MSI, but they are also used for non-MSI irqs */
-       err = devm_request_irq(&pdev->dev, msi->irq1, rcar_pcie_msi_irq,
+       err = devm_request_irq(dev, msi->irq1, rcar_pcie_msi_irq,
                               IRQF_SHARED | IRQF_NO_THREAD,
                               rcar_msi_irq_chip.name, pcie);
        if (err < 0) {
-               dev_err(&pdev->dev, "failed to request IRQ: %d\n", err);
+               dev_err(dev, "failed to request IRQ: %d\n", err);
                goto err;
        }
 
-       err = devm_request_irq(&pdev->dev, msi->irq2, rcar_pcie_msi_irq,
+       err = devm_request_irq(dev, msi->irq2, rcar_pcie_msi_irq,
                               IRQF_SHARED | IRQF_NO_THREAD,
                               rcar_msi_irq_chip.name, pcie);
        if (err < 0) {
-               dev_err(&pdev->dev, "failed to request IRQ: %d\n", err);
+               dev_err(dev, "failed to request IRQ: %d\n", err);
                goto err;
        }
 
@@ -902,29 +906,30 @@ err:
 static int rcar_pcie_get_resources(struct platform_device *pdev,
                                   struct rcar_pcie *pcie)
 {
+       struct device *dev = pcie->dev;
        struct resource res;
        int err, i;
 
-       err = of_address_to_resource(pdev->dev.of_node, 0, &res);
+       err = of_address_to_resource(dev->of_node, 0, &res);
        if (err)
                return err;
 
-       pcie->base = devm_ioremap_resource(&pdev->dev, &res);
+       pcie->base = devm_ioremap_resource(dev, &res);
        if (IS_ERR(pcie->base))
                return PTR_ERR(pcie->base);
 
-       pcie->clk = devm_clk_get(&pdev->dev, "pcie");
+       pcie->clk = devm_clk_get(dev, "pcie");
        if (IS_ERR(pcie->clk)) {
-               dev_err(pcie->dev, "cannot get platform clock\n");
+               dev_err(dev, "cannot get platform clock\n");
                return PTR_ERR(pcie->clk);
        }
        err = clk_prepare_enable(pcie->clk);
        if (err)
                return err;
 
-       pcie->bus_clk = devm_clk_get(&pdev->dev, "pcie_bus");
+       pcie->bus_clk = devm_clk_get(dev, "pcie_bus");
        if (IS_ERR(pcie->bus_clk)) {
-               dev_err(pcie->dev, "cannot get pcie bus clock\n");
+               dev_err(dev, "cannot get pcie bus clock\n");
                err = PTR_ERR(pcie->bus_clk);
                goto fail_clk;
        }
@@ -932,17 +937,17 @@ static int rcar_pcie_get_resources(struct platform_device *pdev,
        if (err)
                goto fail_clk;
 
-       i = irq_of_parse_and_map(pdev->dev.of_node, 0);
+       i = irq_of_parse_and_map(dev->of_node, 0);
        if (!i) {
-               dev_err(pcie->dev, "cannot get platform resources for msi interrupt\n");
+               dev_err(dev, "cannot get platform resources for msi interrupt\n");
                err = -ENOENT;
                goto err_map_reg;
        }
        pcie->msi.irq1 = i;
 
-       i = irq_of_parse_and_map(pdev->dev.of_node, 1);
+       i = irq_of_parse_and_map(dev->of_node, 1);
        if (!i) {
-               dev_err(pcie->dev, "cannot get platform resources for msi interrupt\n");
+               dev_err(dev, "cannot get platform resources for msi interrupt\n");
                err = -ENOENT;
                goto err_map_reg;
        }
@@ -1119,17 +1124,18 @@ out_release_res:
 
 static int rcar_pcie_probe(struct platform_device *pdev)
 {
+       struct device *dev = &pdev->dev;
        struct rcar_pcie *pcie;
        unsigned int data;
        const struct of_device_id *of_id;
        int err;
        int (*hw_init_fn)(struct rcar_pcie *);
 
-       pcie = devm_kzalloc(&pdev->dev, sizeof(*pcie), GFP_KERNEL);
+       pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
        if (!pcie)
                return -ENOMEM;
 
-       pcie->dev = &pdev->dev;
+       pcie->dev = dev;
        platform_set_drvdata(pdev, pcie);
 
        INIT_LIST_HEAD(&pcie->resources);
@@ -1138,41 +1144,41 @@ static int rcar_pcie_probe(struct platform_device *pdev)
 
        err = rcar_pcie_get_resources(pdev, pcie);
        if (err < 0) {
-               dev_err(&pdev->dev, "failed to request resources: %d\n", err);
+               dev_err(dev, "failed to request resources: %d\n", err);
                return err;
        }
 
-       err = rcar_pcie_parse_map_dma_ranges(pcie, pdev->dev.of_node);
+       err = rcar_pcie_parse_map_dma_ranges(pcie, dev->of_node);
        if (err)
                return err;
 
-       of_id = of_match_device(rcar_pcie_of_match, pcie->dev);
+       of_id = of_match_device(rcar_pcie_of_match, dev);
        if (!of_id || !of_id->data)
                return -EINVAL;
        hw_init_fn = of_id->data;
 
-       pm_runtime_enable(pcie->dev);
-       err = pm_runtime_get_sync(pcie->dev);
+       pm_runtime_enable(dev);
+       err = pm_runtime_get_sync(dev);
        if (err < 0) {
-               dev_err(pcie->dev, "pm_runtime_get_sync failed\n");
+               dev_err(dev, "pm_runtime_get_sync failed\n");
                goto err_pm_disable;
        }
 
        /* Failure to get a link might just be that no cards are inserted */
        err = hw_init_fn(pcie);
        if (err) {
-               dev_info(&pdev->dev, "PCIe link down\n");
+               dev_info(dev, "PCIe link down\n");
                err = 0;
                goto err_pm_put;
        }
 
        data = rcar_pci_read_reg(pcie, MACSR);
-       dev_info(&pdev->dev, "PCIe x%d: link up\n", (data >> 20) & 0x3f);
+       dev_info(dev, "PCIe x%d: link up\n", (data >> 20) & 0x3f);
 
        if (IS_ENABLED(CONFIG_PCI_MSI)) {
                err = rcar_pcie_enable_msi(pcie);
                if (err < 0) {
-                       dev_err(&pdev->dev,
+                       dev_err(dev,
                                "failed to enable MSI support: %d\n",
                                err);
                        goto err_pm_put;
@@ -1186,10 +1192,10 @@ static int rcar_pcie_probe(struct platform_device *pdev)
        return 0;
 
 err_pm_put:
-       pm_runtime_put(pcie->dev);
+       pm_runtime_put(dev);
 
 err_pm_disable:
-       pm_runtime_disable(pcie->dev);
+       pm_runtime_disable(dev);
        return err;
 }