Merge branches 'pci/host-aardvark', 'pci/host-altera', 'pci/host-iproc',...

Merge branches 'pci/host-aardvark', 'pci/host-altera', 'pci/host-iproc', 'pci/host-mvebu', 'pci/host-rcar', 'pci/host-rockchip', 'pci/host-tegra', 'pci/host-xgene' and 'pci/host-xilinx' into next

* pci/host-aardvark:
  MAINTAINERS: Add DT binding to the Aardvark PCIe driver maintainer
  PCI: aardvark: Remove unused platform data
  PCI: aardvark: Add local struct device pointers

* pci/host-altera:
  PCI: altera: Simplify TLP_CFG_DW1 usage
  PCI: altera: Simplify TLB_CFG_DW0 usage
  PCI: altera: Rename altera_pcie_valid_config() to altera_pcie_valid_device()
  PCI: altera: Remove redundant platform_get_resource() return value check
  PCI: altera: Remove unused platform data
  PCI: altera: Add local struct device pointers

* pci/host-iproc:
  PCI: iproc: Hard-code PCIe capability offset instead of searching
  PCI: iproc: Remove redundant null pointer checking
  PCI: iproc: Validate CSR base in BCMA setup code
  PCI: iproc: Set drvdata at end of probe function
  PCI: iproc: Add local struct device pointers

* pci/host-mvebu:
  PCI: mvebu: Use existing of_node pointer
  PCI: mvebu: Add local struct device pointers

* pci/host-rcar:
  PCI: rcar-gen2: Add local struct device pointers
  PCI: rcar: Remove DRV_NAME macro
  PCI: rcar: Remove unused rcar_pcie_get_resources() platform_device arg
  PCI: rcar: Remove unused platform data
  PCI: rcar: Add local struct device pointers

* pci/host-rockchip:
  PCI: rockchip: Indent "if" statement body
  PCI: rockchip: Remove unused platform data

* pci/host-tegra:
  PCI: tegra: Remove unused platform data
  PCI: tegra: Add local struct device pointers
  PCI: tegra: Fix argument order in tegra_pcie_phy_disable()

* pci/host-xgene:
  PCI: xgene: Add register accessors
  PCI: xgene: Pass struct xgene_pcie_port to setup functions
  PCI: xgene: Remove unused platform data
  PCI: xgene: Add local struct device pointers

* pci/host-xilinx:
  PCI: xilinx-nwl: Remove unused platform data
  PCI: xilinx-nwl: Add local struct device pointers
  PCI: xilinx: Removed unused xilinx_pcie_assign_msi() argument
  PCI: xilinx: Remove unused platform data
  PCI: xilinx: Add local struct device pointers

MAINTAINERS

@@ -8982,6 +8982,7 @@ M:	Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
 L:	linux-pci@vger.kernel.org
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
+F:	Documentation/devicetree/bindings/pci/aardvark-pci.txt
 F:	drivers/pci/host/pci-aardvark.c
 
 PCI DRIVER FOR NVIDIA TEGRA

drivers/pci/host/pci-aardvark.c

@@ -230,20 +230,20 @@ static int advk_pcie_link_up(struct advk_pcie *pcie)
 
 static int advk_pcie_wait_for_link(struct advk_pcie *pcie)
 {
+	struct device *dev = &pcie->pdev->dev;
 	int retries;
 
 	/* check if the link is up or not */
 	for (retries = 0; retries < LINK_WAIT_MAX_RETRIES; retries++) {
 		if (advk_pcie_link_up(pcie)) {
-			dev_info(&pcie->pdev->dev, "link up\n");
+			dev_info(dev, "link up\n");
 			return 0;
 		}
 
 		usleep_range(LINK_WAIT_USLEEP_MIN, LINK_WAIT_USLEEP_MAX);
 	}
 
-	dev_err(&pcie->pdev->dev, "link never came up\n");
-
+	dev_err(dev, "link never came up\n");
 	return -ETIMEDOUT;
 }
 
@@ -376,6 +376,7 @@ static void advk_pcie_setup_hw(struct advk_pcie *pcie)
 
 static void advk_pcie_check_pio_status(struct advk_pcie *pcie)
 {
+	struct device *dev = &pcie->pdev->dev;
 	u32 reg;
 	unsigned int status;
 	char *strcomp_status, *str_posted;
@@ -407,12 +408,13 @@ static void advk_pcie_check_pio_status(struct advk_pcie *pcie)
 	else
 		str_posted = "Posted";
 
-	dev_err(&pcie->pdev->dev, "%s PIO Response Status: %s, %#x @ %#x\n",
+	dev_err(dev, "%s PIO Response Status: %s, %#x @ %#x\n",
 		str_posted, strcomp_status, reg, advk_readl(pcie, PIO_ADDR_LS));
 }
 
 static int advk_pcie_wait_pio(struct advk_pcie *pcie)
 {
+	struct device *dev = &pcie->pdev->dev;
 	unsigned long timeout;
 
 	timeout = jiffies + msecs_to_jiffies(PIO_TIMEOUT_MS);
@@ -426,7 +428,7 @@ static int advk_pcie_wait_pio(struct advk_pcie *pcie)
 			return 0;
 	}
 
-	dev_err(&pcie->pdev->dev, "config read/write timed out\n");
+	dev_err(dev, "config read/write timed out\n");
 	return -ETIMEDOUT;
 }
 
@@ -560,10 +562,11 @@ static int advk_pcie_alloc_msi(struct advk_pcie *pcie)
 
 static void advk_pcie_free_msi(struct advk_pcie *pcie, int hwirq)
 {
+	struct device *dev = &pcie->pdev->dev;
+
 	mutex_lock(&pcie->msi_used_lock);
 	if (!test_bit(hwirq, pcie->msi_irq_in_use))
-		dev_err(&pcie->pdev->dev, "trying to free unused MSI#%d\n",
-			hwirq);
+		dev_err(dev, "trying to free unused MSI#%d\n", hwirq);
 	else
 		clear_bit(hwirq, pcie->msi_irq_in_use);
 	mutex_unlock(&pcie->msi_used_lock);
@@ -910,6 +913,7 @@ static int advk_pcie_parse_request_of_pci_ranges(struct advk_pcie *pcie)
 
 static int advk_pcie_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	struct advk_pcie *pcie;
 	struct resource *res;
 	struct pci_bus *bus, *child;
@@ -917,31 +921,29 @@ static int advk_pcie_probe(struct platform_device *pdev)
 	struct device_node *msi_node;
 	int ret, irq;
 
-	pcie = devm_kzalloc(&pdev->dev, sizeof(struct advk_pcie),
-			    GFP_KERNEL);
+	pcie = devm_kzalloc(dev, sizeof(struct advk_pcie), GFP_KERNEL);
 	if (!pcie)
 		return -ENOMEM;
 
 	pcie->pdev = pdev;
-	platform_set_drvdata(pdev, pcie);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	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);
 
 	irq = platform_get_irq(pdev, 0);
-	ret = devm_request_irq(&pdev->dev, irq, advk_pcie_irq_handler,
+	ret = devm_request_irq(dev, irq, advk_pcie_irq_handler,
 			       IRQF_SHARED | IRQF_NO_THREAD, "advk-pcie",
 			       pcie);
 	if (ret) {
-		dev_err(&pdev->dev, "Failed to register interrupt\n");
+		dev_err(dev, "Failed to register interrupt\n");
 		return ret;
 	}
 
 	ret = advk_pcie_parse_request_of_pci_ranges(pcie);
 	if (ret) {
-		dev_err(&pdev->dev, "Failed to parse resources\n");
+		dev_err(dev, "Failed to parse resources\n");
 		return ret;
 	}
 
@@ -949,24 +951,24 @@ static int advk_pcie_probe(struct platform_device *pdev)
 
 	ret = advk_pcie_init_irq_domain(pcie);
 	if (ret) {
-		dev_err(&pdev->dev, "Failed to initialize irq\n");
+		dev_err(dev, "Failed to initialize irq\n");
 		return ret;
 	}
 
 	ret = advk_pcie_init_msi_irq_domain(pcie);
 	if (ret) {
-		dev_err(&pdev->dev, "Failed to initialize irq\n");
+		dev_err(dev, "Failed to initialize irq\n");
 		advk_pcie_remove_irq_domain(pcie);
 		return ret;
 	}
 
-	msi_node = of_parse_phandle(pdev->dev.of_node, "msi-parent", 0);
+	msi_node = of_parse_phandle(dev->of_node, "msi-parent", 0);
 	if (msi_node)
 		msi = of_pci_find_msi_chip_by_node(msi_node);
 	else
 		msi = NULL;
 
-	bus = pci_scan_root_bus_msi(&pdev->dev, 0, &advk_pcie_ops,
+	bus = pci_scan_root_bus_msi(dev, 0, &advk_pcie_ops,
 				    pcie, &pcie->resources, &pcie->msi);
 	if (!bus) {
 		advk_pcie_remove_msi_irq_domain(pcie);
@@ -980,7 +982,6 @@ static int advk_pcie_probe(struct platform_device *pdev)
 		pcie_bus_configure_settings(child);
 
 	pci_bus_add_devices(bus);
-
 	return 0;
 }
 

drivers/pci/host/pci-mvebu.c

@@ -1190,13 +1190,13 @@ static void mvebu_pcie_powerdown(struct mvebu_pcie_port *port)
 
 static int mvebu_pcie_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	struct mvebu_pcie *pcie;
-	struct device_node *np = pdev->dev.of_node;
+	struct device_node *np = dev->of_node;
 	struct device_node *child;
 	int num, i, ret;
 
-	pcie = devm_kzalloc(&pdev->dev, sizeof(struct mvebu_pcie),
-			    GFP_KERNEL);
+	pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
 	if (!pcie)
 		return -ENOMEM;
 
@@ -1206,7 +1206,7 @@ static int mvebu_pcie_probe(struct platform_device *pdev)
 	/* Get the PCIe memory and I/O aperture */
 	mvebu_mbus_get_pcie_mem_aperture(&pcie->mem);
 	if (resource_size(&pcie->mem) == 0) {
-		dev_err(&pdev->dev, "invalid memory aperture size\n");
+		dev_err(dev, "invalid memory aperture size\n");
 		return -EINVAL;
 	}
 
@@ -1224,20 +1224,18 @@ static int mvebu_pcie_probe(struct platform_device *pdev)
 	/* Get the bus range */
 	ret = of_pci_parse_bus_range(np, &pcie->busn);
 	if (ret) {
-		dev_err(&pdev->dev, "failed to parse bus-range property: %d\n",
-			ret);
+		dev_err(dev, "failed to parse bus-range property: %d\n", ret);
 		return ret;
 	}
 
-	num = of_get_available_child_count(pdev->dev.of_node);
+	num = of_get_available_child_count(np);
 
-	pcie->ports = devm_kcalloc(&pdev->dev, num, sizeof(*pcie->ports),
-				   GFP_KERNEL);
+	pcie->ports = devm_kcalloc(dev, num, sizeof(*pcie->ports), GFP_KERNEL);
 	if (!pcie->ports)
 		return -ENOMEM;
 
 	i = 0;
-	for_each_available_child_of_node(pdev->dev.of_node, child) {
+	for_each_available_child_of_node(np, child) {
 		struct mvebu_pcie_port *port = &pcie->ports[i];
 
 		ret = mvebu_pcie_parse_port(pcie, port, child);
@@ -1266,8 +1264,7 @@ static int mvebu_pcie_probe(struct platform_device *pdev)
 
 		port->base = mvebu_pcie_map_registers(pdev, child, port);
 		if (IS_ERR(port->base)) {
-			dev_err(&pdev->dev, "%s: cannot map registers\n",
-				port->name);
+			dev_err(dev, "%s: cannot map registers\n", port->name);
 			port->base = NULL;
 			mvebu_pcie_powerdown(port);
 			continue;

drivers/pci/host/pci-rcar-gen2.c

@@ -154,10 +154,11 @@ static int rcar_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 static irqreturn_t rcar_pci_err_irq(int irq, void *pw)
 {
 	struct rcar_pci_priv *priv = pw;
+	struct device *dev = priv->dev;
 	u32 status = ioread32(priv->reg + RCAR_PCI_INT_STATUS_REG);
 
 	if (status & RCAR_PCI_INT_ALLERRORS) {
-		dev_err(priv->dev, "error irq: status %08x\n", status);
+		dev_err(dev, "error irq: status %08x\n", status);
 
 		/* clear the error(s) */
 		iowrite32(status & RCAR_PCI_INT_ALLERRORS,
@@ -170,13 +171,14 @@ static irqreturn_t rcar_pci_err_irq(int irq, void *pw)
 
 static void rcar_pci_setup_errirq(struct rcar_pci_priv *priv)
 {
+	struct device *dev = priv->dev;
 	int ret;
 	u32 val;
 
-	ret = devm_request_irq(priv->dev, priv->irq, rcar_pci_err_irq,
+	ret = devm_request_irq(dev, priv->irq, rcar_pci_err_irq,
 			       IRQF_SHARED, "error irq", priv);
 	if (ret) {
-		dev_err(priv->dev, "cannot claim IRQ for error handling\n");
+		dev_err(dev, "cannot claim IRQ for error handling\n");
 		return;
 	}
 
@@ -192,15 +194,16 @@ static inline void rcar_pci_setup_errirq(struct rcar_pci_priv *priv) { }
 static int rcar_pci_setup(int nr, struct pci_sys_data *sys)
 {
 	struct rcar_pci_priv *priv = sys->private_data;
+	struct device *dev = priv->dev;
 	void __iomem *reg = priv->reg;
 	u32 val;
 	int ret;
 
-	pm_runtime_enable(priv->dev);
-	pm_runtime_get_sync(priv->dev);
+	pm_runtime_enable(dev);
+	pm_runtime_get_sync(dev);
 
 	val = ioread32(reg + RCAR_PCI_UNIT_REV_REG);
-	dev_info(priv->dev, "PCI: bus%u revision %x\n", sys->busnr, val);
+	dev_info(dev, "PCI: bus%u revision %x\n", sys->busnr, val);
 
 	/* Disable Direct Power Down State and assert reset */
 	val = ioread32(reg + RCAR_USBCTR_REG) & ~RCAR_USBCTR_DIRPD;
@@ -275,7 +278,7 @@ static int rcar_pci_setup(int nr, struct pci_sys_data *sys)
 
 	/* Add PCI resources */
 	pci_add_resource(&sys->resources, &priv->mem_res);
-	ret = devm_request_pci_bus_resources(priv->dev, &sys->resources);
+	ret = devm_request_pci_bus_resources(dev, &sys->resources);
 	if (ret < 0)
 		return ret;
 
@@ -311,6 +314,7 @@ static int pci_dma_range_parser_init(struct of_pci_range_parser *parser,
 static int rcar_pci_parse_map_dma_ranges(struct rcar_pci_priv *pci,
 					 struct device_node *np)
 {
+	struct device *dev = pci->dev;
 	struct of_pci_range range;
 	struct of_pci_range_parser parser;
 	int index = 0;
@@ -331,14 +335,14 @@ static int rcar_pci_parse_map_dma_ranges(struct rcar_pci_priv *pci,
 
 		/* Catch HW limitations */
 		if (!(range.flags & IORESOURCE_PREFETCH)) {
-			dev_err(pci->dev, "window must be prefetchable\n");
+			dev_err(dev, "window must be prefetchable\n");
 			return -EINVAL;
 		}
 		if (pci->window_addr) {
 			u32 lowaddr = 1 << (ffs(pci->window_addr) - 1);
 
 			if (lowaddr < pci->window_size) {
-				dev_err(pci->dev, "invalid window size/addr\n");
+				dev_err(dev, "invalid window size/addr\n");
 				return -EINVAL;
 			}
 		}
@@ -350,6 +354,7 @@ static int rcar_pci_parse_map_dma_ranges(struct rcar_pci_priv *pci,
 
 static int rcar_pci_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	struct resource *cfg_res, *mem_res;
 	struct rcar_pci_priv *priv;
 	void __iomem *reg;
@@ -357,7 +362,7 @@ static int rcar_pci_probe(struct platform_device *pdev)
 	void *hw_private[1];
 
 	cfg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	reg = devm_ioremap_resource(&pdev->dev, cfg_res);
+	reg = devm_ioremap_resource(dev, cfg_res);
 	if (IS_ERR(reg))
 		return PTR_ERR(reg);
 
@@ -368,8 +373,7 @@ static int rcar_pci_probe(struct platform_device *pdev)
 	if (mem_res->start & 0xFFFF)
 		return -EINVAL;
 
-	priv = devm_kzalloc(&pdev->dev,
-			    sizeof(struct rcar_pci_priv), GFP_KERNEL);
+	priv = devm_kzalloc(dev, sizeof(struct rcar_pci_priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
 
@@ -378,10 +382,10 @@ static int rcar_pci_probe(struct platform_device *pdev)
 
 	priv->irq = platform_get_irq(pdev, 0);
 	priv->reg = reg;
-	priv->dev = &pdev->dev;
+	priv->dev = dev;
 
 	if (priv->irq < 0) {
-		dev_err(&pdev->dev, "no valid irq found\n");
+		dev_err(dev, "no valid irq found\n");
 		return priv->irq;
 	}
 
@@ -390,23 +394,23 @@ static int rcar_pci_probe(struct platform_device *pdev)
 	priv->window_pci = 0x40000000;
 	priv->window_size = SZ_1G;
 
-	if (pdev->dev.of_node) {
+	if (dev->of_node) {
 		struct resource busnr;
 		int ret;
 
-		ret = of_pci_parse_bus_range(pdev->dev.of_node, &busnr);
+		ret = of_pci_parse_bus_range(dev->of_node, &busnr);
 		if (ret < 0) {
-			dev_err(&pdev->dev, "failed to parse bus-range\n");
+			dev_err(dev, "failed to parse bus-range\n");
 			return ret;
 		}
 
 		priv->busnr = busnr.start;
 		if (busnr.end != busnr.start)
-			dev_warn(&pdev->dev, "only one bus number supported\n");
+			dev_warn(dev, "only one bus number supported\n");
 
-		ret = rcar_pci_parse_map_dma_ranges(priv, pdev->dev.of_node);
+		ret = rcar_pci_parse_map_dma_ranges(priv, dev->of_node);
 		if (ret < 0) {
-			dev_err(&pdev->dev, "failed to parse dma-range\n");
+			dev_err(dev, "failed to parse dma-range\n");
 			return ret;
 		}
 	} else {
@@ -421,7 +425,7 @@ static int rcar_pci_probe(struct platform_device *pdev)
 	hw.map_irq = rcar_pci_map_irq;
 	hw.ops = &rcar_pci_ops;
 	hw.setup = rcar_pci_setup;
-	pci_common_init_dev(&pdev->dev, &hw);
+	pci_common_init_dev(dev, &hw);
 	return 0;
 }
 

drivers/pci/host/pcie-altera.c

@@ -55,15 +55,19 @@
 #define TLP_PAYLOAD_SIZE		0x01
 #define TLP_READ_TAG			0x1d
 #define TLP_WRITE_TAG			0x10
-#define TLP_CFG_DW0(fmttype)		(((fmttype) << 24) | TLP_PAYLOAD_SIZE)
-#define TLP_CFG_DW1(reqid, tag, be)	(((reqid) << 16) | (tag << 8) | (be))
+#define RP_DEVFN			0
+#define TLP_REQ_ID(bus, devfn)		(((bus) << 8) | (devfn))
+#define TLP_CFG_DW0(pcie, bus)						\
+    ((((bus == pcie->root_bus_nr) ? TLP_FMTTYPE_CFGRD0			\
+				    : TLP_FMTTYPE_CFGRD1) << 24) |	\
+     TLP_PAYLOAD_SIZE)
+#define TLP_CFG_DW1(pcie, tag, be)	\
+    (((TLP_REQ_ID(pcie->root_bus_nr,  RP_DEVFN)) << 16) | (tag << 8) | (be))
 #define TLP_CFG_DW2(bus, devfn, offset)	\
 				(((bus) << 24) | ((devfn) << 16) | (offset))
-#define TLP_REQ_ID(bus, devfn)		(((bus) << 8) | (devfn))
 #define TLP_COMP_STATUS(s)		(((s) >> 12) & 7)
 #define TLP_HDR_SIZE			3
 #define TLP_LOOP			500
-#define RP_DEVFN			0
 
 #define LINK_UP_TIMEOUT			HZ
 #define LINK_RETRAIN_TIMEOUT		HZ
@@ -74,7 +78,7 @@
 
 struct altera_pcie {
 	struct platform_device	*pdev;
-	void __iomem		*cra_base;
+	void __iomem		*cra_base;	/* DT Cra */
 	int			irq;
 	u8			root_bus_nr;
 	struct irq_domain	*irq_domain;
@@ -131,7 +135,7 @@ static void tlp_write_tx(struct altera_pcie *pcie,
 	cra_writel(pcie, tlp_rp_regdata->ctrl, RP_TX_CNTRL);
 }
 
-static bool altera_pcie_valid_config(struct altera_pcie *pcie,
+static bool altera_pcie_valid_device(struct altera_pcie *pcie,
 				     struct pci_bus *bus, int dev)
 {
 	/* If there is no link, then there is no device */
@@ -218,13 +222,8 @@ static int tlp_cfg_dword_read(struct altera_pcie *pcie, u8 bus, u32 devfn,
 {
 	u32 headers[TLP_HDR_SIZE];
 
-	if (bus == pcie->root_bus_nr)
-		headers[0] = TLP_CFG_DW0(TLP_FMTTYPE_CFGRD0);
-	else
-		headers[0] = TLP_CFG_DW0(TLP_FMTTYPE_CFGRD1);
-
-	headers[1] = TLP_CFG_DW1(TLP_REQ_ID(pcie->root_bus_nr, RP_DEVFN),
-					TLP_READ_TAG, byte_en);
+	headers[0] = TLP_CFG_DW0(pcie, bus);
+	headers[1] = TLP_CFG_DW1(pcie, TLP_READ_TAG, byte_en);
 	headers[2] = TLP_CFG_DW2(bus, devfn, where);
 
 	tlp_write_packet(pcie, headers, 0, false);
@@ -238,13 +237,8 @@ static int tlp_cfg_dword_write(struct altera_pcie *pcie, u8 bus, u32 devfn,
 	u32 headers[TLP_HDR_SIZE];
 	int ret;
 
-	if (bus == pcie->root_bus_nr)
-		headers[0] = TLP_CFG_DW0(TLP_FMTTYPE_CFGWR0);
-	else
-		headers[0] = TLP_CFG_DW0(TLP_FMTTYPE_CFGWR1);
-
-	headers[1] = TLP_CFG_DW1(TLP_REQ_ID(pcie->root_bus_nr, RP_DEVFN),
-					TLP_WRITE_TAG, byte_en);
+	headers[0] = TLP_CFG_DW0(pcie, bus);
+	headers[1] = TLP_CFG_DW1(pcie, TLP_WRITE_TAG, byte_en);
 	headers[2] = TLP_CFG_DW2(bus, devfn, where);
 
 	/* check alignment to Qword */
@@ -342,7 +336,7 @@ static int altera_pcie_cfg_read(struct pci_bus *bus, unsigned int devfn,
 	if (altera_pcie_hide_rc_bar(bus, devfn, where))
 		return PCIBIOS_BAD_REGISTER_NUMBER;
 
-	if (!altera_pcie_valid_config(pcie, bus, PCI_SLOT(devfn))) {
+	if (!altera_pcie_valid_device(pcie, bus, PCI_SLOT(devfn))) {
 		*value = 0xffffffff;
 		return PCIBIOS_DEVICE_NOT_FOUND;
 	}
@@ -359,7 +353,7 @@ static int altera_pcie_cfg_write(struct pci_bus *bus, unsigned int devfn,
 	if (altera_pcie_hide_rc_bar(bus, devfn, where))
 		return PCIBIOS_BAD_REGISTER_NUMBER;
 
-	if (!altera_pcie_valid_config(pcie, bus, PCI_SLOT(devfn)))
+	if (!altera_pcie_valid_device(pcie, bus, PCI_SLOT(devfn)))
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
 	return _altera_pcie_cfg_write(pcie, bus->number, devfn, where, size,
@@ -394,6 +388,7 @@ static int altera_write_cap_word(struct altera_pcie *pcie, u8 busno,
 
 static void altera_wait_link_retrain(struct altera_pcie *pcie)
 {
+	struct device *dev = &pcie->pdev->dev;
 	u16 reg16;
 	unsigned long start_jiffies;
 
@@ -406,7 +401,7 @@ static void altera_wait_link_retrain(struct altera_pcie *pcie)
 			break;
 
 		if (time_after(jiffies, start_jiffies + LINK_RETRAIN_TIMEOUT)) {
-			dev_err(&pcie->pdev->dev, "link retrain timeout\n");
+			dev_err(dev, "link retrain timeout\n");
 			break;
 		}
 		udelay(100);
@@ -419,7 +414,7 @@ static void altera_wait_link_retrain(struct altera_pcie *pcie)
 			break;
 
 		if (time_after(jiffies, start_jiffies + LINK_UP_TIMEOUT)) {
-			dev_err(&pcie->pdev->dev, "link up timeout\n");
+			dev_err(dev, "link up timeout\n");
 			break;
 		}
 		udelay(100);
@@ -460,7 +455,6 @@ static int altera_pcie_intx_map(struct irq_domain *domain, unsigned int irq,
 {
 	irq_set_chip_and_handler(irq, &dummy_irq_chip, handle_simple_irq);
 	irq_set_chip_data(irq, domain->host_data);
-
 	return 0;
 }
 
@@ -472,12 +466,14 @@ static void altera_pcie_isr(struct irq_desc *desc)
 {
 	struct irq_chip *chip = irq_desc_get_chip(desc);
 	struct altera_pcie *pcie;
+	struct device *dev;
 	unsigned long status;
 	u32 bit;
 	u32 virq;
 
 	chained_irq_enter(chip, desc);
 	pcie = irq_desc_get_handler_data(desc);
+	dev = &pcie->pdev->dev;
 
 	while ((status = cra_readl(pcie, P2A_INT_STATUS)
 		& P2A_INT_STS_ALL) != 0) {
@@ -489,8 +485,7 @@ static void altera_pcie_isr(struct irq_desc *desc)
 			if (virq)
 				generic_handle_irq(virq);
 			else
-				dev_err(&pcie->pdev->dev,
-					"unexpected IRQ, INT%d\n", bit);
+				dev_err(dev, "unexpected IRQ, INT%d\n", bit);
 		}
 	}
 
@@ -549,30 +544,25 @@ static int altera_pcie_init_irq_domain(struct altera_pcie *pcie)
 
 static int altera_pcie_parse_dt(struct altera_pcie *pcie)
 {
-	struct resource *cra;
+	struct device *dev = &pcie->pdev->dev;
 	struct platform_device *pdev = pcie->pdev;
+	struct resource *cra;
 
 	cra = platform_get_resource_byname(pdev, IORESOURCE_MEM, "Cra");
-	if (!cra) {
-		dev_err(&pdev->dev, "no Cra memory resource defined\n");
-		return -ENODEV;
-	}
-
-	pcie->cra_base = devm_ioremap_resource(&pdev->dev, cra);
+	pcie->cra_base = devm_ioremap_resource(dev, cra);
 	if (IS_ERR(pcie->cra_base)) {
-		dev_err(&pdev->dev, "failed to map cra memory\n");
+		dev_err(dev, "failed to map cra memory\n");
 		return PTR_ERR(pcie->cra_base);
 	}
 
 	/* setup IRQ */
 	pcie->irq = platform_get_irq(pdev, 0);
 	if (pcie->irq <= 0) {
-		dev_err(&pdev->dev, "failed to get IRQ: %d\n", pcie->irq);
+		dev_err(dev, "failed to get IRQ: %d\n", pcie->irq);
 		return -EINVAL;
 	}
 
 	irq_set_chained_handler_and_data(pcie->irq, altera_pcie_isr, pcie);
-
 	return 0;
 }
 
@@ -583,12 +573,13 @@ static void altera_pcie_host_init(struct altera_pcie *pcie)
 
 static int altera_pcie_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	struct altera_pcie *pcie;
 	struct pci_bus *bus;
 	struct pci_bus *child;
 	int ret;
 
-	pcie = devm_kzalloc(&pdev->dev, sizeof(*pcie), GFP_KERNEL);
+	pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
 	if (!pcie)
 		return -ENOMEM;
 
@@ -596,7 +587,7 @@ static int altera_pcie_probe(struct platform_device *pdev)
 
 	ret = altera_pcie_parse_dt(pcie);
 	if (ret) {
-		dev_err(&pdev->dev, "Parsing DT failed\n");
+		dev_err(dev, "Parsing DT failed\n");
 		return ret;
 	}
 
@@ -604,13 +595,13 @@ static int altera_pcie_probe(struct platform_device *pdev)
 
 	ret = altera_pcie_parse_request_of_pci_ranges(pcie);
 	if (ret) {
-		dev_err(&pdev->dev, "Failed add resources\n");
+		dev_err(dev, "Failed add resources\n");
 		return ret;
 	}
 
 	ret = altera_pcie_init_irq_domain(pcie);
 	if (ret) {
-		dev_err(&pdev->dev, "Failed creating IRQ Domain\n");
+		dev_err(dev, "Failed creating IRQ Domain\n");
 		return ret;
 	}
 
@@ -620,7 +611,7 @@ static int altera_pcie_probe(struct platform_device *pdev)
 	cra_writel(pcie, P2A_INT_ENA_ALL, P2A_INT_ENABLE);
 	altera_pcie_host_init(pcie);
 
-	bus = pci_scan_root_bus(&pdev->dev, pcie->root_bus_nr, &altera_pcie_ops,
+	bus = pci_scan_root_bus(dev, pcie->root_bus_nr, &altera_pcie_ops,
 				pcie, &pcie->resources);
 	if (!bus)
 		return -ENOMEM;
@@ -633,8 +624,6 @@ static int altera_pcie_probe(struct platform_device *pdev)
 		pcie_bus_configure_settings(child);
 
 	pci_bus_add_devices(bus);
-
-	platform_set_drvdata(pdev, pcie);
 	return ret;
 }
 

drivers/pci/host/pcie-iproc-bcma.c

@@ -42,19 +42,24 @@ static int iproc_pcie_bcma_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 
 static int iproc_pcie_bcma_probe(struct bcma_device *bdev)
 {
+	struct device *dev = &bdev->dev;
 	struct iproc_pcie *pcie;
 	LIST_HEAD(res);
 	struct resource res_mem;
 	int ret;
 
-	pcie = devm_kzalloc(&bdev->dev, sizeof(*pcie), GFP_KERNEL);
+	pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
 	if (!pcie)
 		return -ENOMEM;
 
-	pcie->dev = &bdev->dev;
-	bcma_set_drvdata(bdev, pcie);
+	pcie->dev = dev;
 
 	pcie->base = bdev->io_addr;
+	if (!pcie->base) {
+		dev_err(dev, "no controller registers\n");
+		return -ENOMEM;
+	}
+
 	pcie->base_addr = bdev->addr;
 
 	res_mem.start = bdev->addr_s[0];
@@ -67,10 +72,11 @@ static int iproc_pcie_bcma_probe(struct bcma_device *bdev)
 
 	ret = iproc_pcie_setup(pcie, &res);
 	if (ret)
-		dev_err(pcie->dev, "PCIe controller setup failed\n");
+		dev_err(dev, "PCIe controller setup failed\n");
 
 	pci_free_resource_list(&res);
 
+	bcma_set_drvdata(bdev, pcie);
 	return ret;
 }
 

drivers/pci/host/pcie-iproc-platform.c

@@ -40,35 +40,35 @@ MODULE_DEVICE_TABLE(of, iproc_pcie_of_match_table);
 
 static int iproc_pcie_pltfm_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	const struct of_device_id *of_id;
 	struct iproc_pcie *pcie;
-	struct device_node *np = pdev->dev.of_node;
+	struct device_node *np = dev->of_node;
 	struct resource reg;
 	resource_size_t iobase = 0;
 	LIST_HEAD(res);
 	int ret;
 
-	of_id = of_match_device(iproc_pcie_of_match_table, &pdev->dev);
+	of_id = of_match_device(iproc_pcie_of_match_table, dev);
 	if (!of_id)
 		return -EINVAL;
 
-	pcie = devm_kzalloc(&pdev->dev, sizeof(struct iproc_pcie), GFP_KERNEL);
+	pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
 	if (!pcie)
 		return -ENOMEM;
 
-	pcie->dev = &pdev->dev;
+	pcie->dev = dev;
 	pcie->type = (enum iproc_pcie_type)of_id->data;
-	platform_set_drvdata(pdev, pcie);
 
 	ret = of_address_to_resource(np, 0, &reg);
 	if (ret < 0) {
-		dev_err(pcie->dev, "unable to obtain controller resources\n");
+		dev_err(dev, "unable to obtain controller resources\n");
 		return ret;
 	}
 
-	pcie->base = devm_ioremap(pcie->dev, reg.start, resource_size(&reg));
+	pcie->base = devm_ioremap(dev, reg.start, resource_size(&reg));
 	if (!pcie->base) {
-		dev_err(pcie->dev, "unable to map controller registers\n");
+		dev_err(dev, "unable to map controller registers\n");
 		return -ENOMEM;
 	}
 	pcie->base_addr = reg.start;
@@ -79,7 +79,7 @@ static int iproc_pcie_pltfm_probe(struct platform_device *pdev)
 		ret = of_property_read_u32(np, "brcm,pcie-ob-axi-offset",
 					   &val);
 		if (ret) {
-			dev_err(pcie->dev,
+			dev_err(dev,
 				"missing brcm,pcie-ob-axi-offset property\n");
 			return ret;
 		}
@@ -88,7 +88,7 @@ static int iproc_pcie_pltfm_probe(struct platform_device *pdev)
 		ret = of_property_read_u32(np, "brcm,pcie-ob-window-size",
 					   &val);
 		if (ret) {
-			dev_err(pcie->dev,
+			dev_err(dev,
 				"missing brcm,pcie-ob-window-size property\n");
 			return ret;
 		}
@@ -101,7 +101,7 @@ static int iproc_pcie_pltfm_probe(struct platform_device *pdev)
 	}
 
 	/* PHY use is optional */
-	pcie->phy = devm_phy_get(&pdev->dev, "pcie-phy");
+	pcie->phy = devm_phy_get(dev, "pcie-phy");
 	if (IS_ERR(pcie->phy)) {
 		if (PTR_ERR(pcie->phy) == -EPROBE_DEFER)
 			return -EPROBE_DEFER;
@@ -110,7 +110,7 @@ static int iproc_pcie_pltfm_probe(struct platform_device *pdev)
 
 	ret = of_pci_get_host_bridge_resources(np, 0, 0xff, &res, &iobase);
 	if (ret) {
-		dev_err(pcie->dev,
+		dev_err(dev,
 			"unable to get PCI host bridge resources\n");
 		return ret;
 	}
@@ -119,10 +119,11 @@ static int iproc_pcie_pltfm_probe(struct platform_device *pdev)
 
 	ret = iproc_pcie_setup(pcie, &res);
 	if (ret)
-		dev_err(pcie->dev, "PCIe controller setup failed\n");
+		dev_err(dev, "PCIe controller setup failed\n");
 
 	pci_free_resource_list(&res);
 
+	platform_set_drvdata(pdev, pcie);
 	return ret;
 }
 

drivers/pci/host/pcie-iproc.c

@@ -63,6 +63,8 @@
 #define OARR_SIZE_CFG_SHIFT          1
 #define OARR_SIZE_CFG                BIT(OARR_SIZE_CFG_SHIFT)
 
+#define PCI_EXP_CAP			0xac
+
 #define MAX_NUM_OB_WINDOWS           2
 
 #define IPROC_PCIE_REG_INVALID 0xffff
@@ -258,9 +260,10 @@ static void iproc_pcie_reset(struct iproc_pcie *pcie)
 
 static int iproc_pcie_check_link(struct iproc_pcie *pcie, struct pci_bus *bus)
 {
+	struct device *dev = pcie->dev;
 	u8 hdr_type;
 	u32 link_ctrl, class, val;
-	u16 pos, link_status;
+	u16 pos = PCI_EXP_CAP, link_status;
 	bool link_is_active = false;
 
 	/*
@@ -272,14 +275,14 @@ static int iproc_pcie_check_link(struct iproc_pcie *pcie, struct pci_bus *bus)
 
 	val = iproc_pcie_read_reg(pcie, IPROC_PCIE_LINK_STATUS);
 	if (!(val & PCIE_PHYLINKUP) || !(val & PCIE_DL_ACTIVE)) {
-		dev_err(pcie->dev, "PHY or data link is INACTIVE!\n");
+		dev_err(dev, "PHY or data link is INACTIVE!\n");
 		return -ENODEV;
 	}
 
 	/* make sure we are not in EP mode */
 	pci_bus_read_config_byte(bus, 0, PCI_HEADER_TYPE, &hdr_type);
 	if ((hdr_type & 0x7f) != PCI_HEADER_TYPE_BRIDGE) {
-		dev_err(pcie->dev, "in EP mode, hdr=%#02x\n", hdr_type);
+		dev_err(dev, "in EP mode, hdr=%#02x\n", hdr_type);
 		return -EFAULT;
 	}
 
@@ -293,30 +296,27 @@ static int iproc_pcie_check_link(struct iproc_pcie *pcie, struct pci_bus *bus)
 	pci_bus_write_config_dword(bus, 0, PCI_BRIDGE_CTRL_REG_OFFSET, class);
 
 	/* check link status to see if link is active */
-	pos = pci_bus_find_capability(bus, 0, PCI_CAP_ID_EXP);
 	pci_bus_read_config_word(bus, 0, pos + PCI_EXP_LNKSTA, &link_status);
 	if (link_status & PCI_EXP_LNKSTA_NLW)
 		link_is_active = true;
 
 	if (!link_is_active) {
 		/* try GEN 1 link speed */
-#define PCI_LINK_STATUS_CTRL_2_OFFSET 0x0dc
 #define PCI_TARGET_LINK_SPEED_MASK    0xf
 #define PCI_TARGET_LINK_SPEED_GEN2    0x2
 #define PCI_TARGET_LINK_SPEED_GEN1    0x1
 		pci_bus_read_config_dword(bus, 0,
-					  PCI_LINK_STATUS_CTRL_2_OFFSET,
+					  pos + PCI_EXP_LNKCTL2,
 					  &link_ctrl);
 		if ((link_ctrl & PCI_TARGET_LINK_SPEED_MASK) ==
 		    PCI_TARGET_LINK_SPEED_GEN2) {
 			link_ctrl &= ~PCI_TARGET_LINK_SPEED_MASK;
 			link_ctrl |= PCI_TARGET_LINK_SPEED_GEN1;
 			pci_bus_write_config_dword(bus, 0,
-					   PCI_LINK_STATUS_CTRL_2_OFFSET,
+					   pos + PCI_EXP_LNKCTL2,
 					   link_ctrl);
 			msleep(100);
 
-			pos = pci_bus_find_capability(bus, 0, PCI_CAP_ID_EXP);
 			pci_bus_read_config_word(bus, 0, pos + PCI_EXP_LNKSTA,
 						 &link_status);
 			if (link_status & PCI_EXP_LNKSTA_NLW)
@@ -324,7 +324,7 @@ static int iproc_pcie_check_link(struct iproc_pcie *pcie, struct pci_bus *bus)
 		}
 	}
 
-	dev_info(pcie->dev, "link: %s\n", link_is_active ? "UP" : "DOWN");
+	dev_info(dev, "link: %s\n", link_is_active ? "UP" : "DOWN");
 
 	return link_is_active ? 0 : -ENODEV;
 }
@@ -349,12 +349,13 @@ static int iproc_pcie_setup_ob(struct iproc_pcie *pcie, u64 axi_addr,
 			       u64 pci_addr, resource_size_t size)
 {
 	struct iproc_pcie_ob *ob = &pcie->ob;
+	struct device *dev = pcie->dev;
 	unsigned i;
 	u64 max_size = (u64)ob->window_size * MAX_NUM_OB_WINDOWS;
 	u64 remainder;
 
 	if (size > max_size) {
-		dev_err(pcie->dev,
+		dev_err(dev,
 			"res size %pap exceeds max supported size 0x%llx\n",
 			&size, max_size);
 		return -EINVAL;
@@ -362,15 +363,14 @@ static int iproc_pcie_setup_ob(struct iproc_pcie *pcie, u64 axi_addr,
 
 	div64_u64_rem(size, ob->window_size, &remainder);
 	if (remainder) {
-		dev_err(pcie->dev,
+		dev_err(dev,
 			"res size %pap needs to be multiple of window size %pap\n",
 			&size, &ob->window_size);
 		return -EINVAL;
 	}
 
 	if (axi_addr < ob->axi_offset) {
-		dev_err(pcie->dev,
-			"axi address %pap less than offset %pap\n",
+		dev_err(dev, "axi address %pap less than offset %pap\n",
 			&axi_addr, &ob->axi_offset);
 		return -EINVAL;
 	}
@@ -406,6 +406,7 @@ static int iproc_pcie_setup_ob(struct iproc_pcie *pcie, u64 axi_addr,
 static int iproc_pcie_map_ranges(struct iproc_pcie *pcie,
 				 struct list_head *resources)
 {
+	struct device *dev = pcie->dev;
 	struct resource_entry *window;
 	int ret;
 
@@ -425,7 +426,7 @@ static int iproc_pcie_map_ranges(struct iproc_pcie *pcie,
 				return ret;
 			break;
 		default:
-			dev_err(pcie->dev, "invalid resource %pR\n", res);
+			dev_err(dev, "invalid resource %pR\n", res);
 			return -EINVAL;
 		}
 	}
@@ -455,26 +456,25 @@ static void iproc_pcie_msi_disable(struct iproc_pcie *pcie)
 
 int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
 {
+	struct device *dev;
 	int ret;
 	void *sysdata;
 	struct pci_bus *bus;
 
-	if (!pcie || !pcie->dev || !pcie->base)
-		return -EINVAL;
-
-	ret = devm_request_pci_bus_resources(pcie->dev, res);
+	dev = pcie->dev;
+	ret = devm_request_pci_bus_resources(dev, res);
 	if (ret)
 		return ret;
 
 	ret = phy_init(pcie->phy);
 	if (ret) {
-		dev_err(pcie->dev, "unable to initialize PCIe PHY\n");
+		dev_err(dev, "unable to initialize PCIe PHY\n");
 		return ret;
 	}
 
 	ret = phy_power_on(pcie->phy);
 	if (ret) {
-		dev_err(pcie->dev, "unable to power on PCIe PHY\n");
+		dev_err(dev, "unable to power on PCIe PHY\n");
 		goto err_exit_phy;
 	}
 
@@ -486,7 +486,7 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
 		pcie->reg_offsets = iproc_pcie_reg_paxc;
 		break;
 	default:
-		dev_err(pcie->dev, "incompatible iProc PCIe interface\n");
+		dev_err(dev, "incompatible iProc PCIe interface\n");
 		ret = -EINVAL;
 		goto err_power_off_phy;
 	}
@@ -496,7 +496,7 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
 	if (pcie->need_ob_cfg) {
 		ret = iproc_pcie_map_ranges(pcie, res);
 		if (ret) {
-			dev_err(pcie->dev, "map failed\n");
+			dev_err(dev, "map failed\n");
 			goto err_power_off_phy;
 		}
 	}
@@ -508,9 +508,9 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
 	sysdata = pcie;
 #endif
 
-	bus = pci_create_root_bus(pcie->dev, 0, &iproc_pcie_ops, sysdata, res);
+	bus = pci_create_root_bus(dev, 0, &iproc_pcie_ops, sysdata, res);
 	if (!bus) {
-		dev_err(pcie->dev, "unable to create PCI root bus\n");
+		dev_err(dev, "unable to create PCI root bus\n");
 		ret = -ENOMEM;
 		goto err_power_off_phy;
 	}
@@ -518,7 +518,7 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
 
 	ret = iproc_pcie_check_link(pcie, bus);
 	if (ret) {
-		dev_err(pcie->dev, "no PCIe EP device detected\n");
+		dev_err(dev, "no PCIe EP device detected\n");
 		goto err_rm_root_bus;
 	}
 
@@ -526,7 +526,7 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
 
 	if (IS_ENABLED(CONFIG_PCI_MSI))
 		if (iproc_pcie_msi_enable(pcie))
-			dev_info(pcie->dev, "not using iProc MSI\n");
+			dev_info(dev, "not using iProc MSI\n");
 
 	pci_scan_child_bus(bus);
 	pci_assign_unassigned_bus_resources(bus);

drivers/pci/host/pcie-rcar.c

@@ -31,8 +31,6 @@
 #include <linux/pm_runtime.h>
 #include <linux/slab.h>
 
-#define DRV_NAME "rcar-pcie"
-
 #define PCIECAR			0x000010
 #define PCIECCTLR		0x000018
 #define  CONFIG_SEND_ENABLE	(1 << 31)
@@ -397,6 +395,7 @@ 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 +403,7 @@ 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 +432,7 @@ 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 +440,16 @@ 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 +461,14 @@ 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 +487,7 @@ 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 +497,7 @@ 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 +698,7 @@ 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 +719,10 @@ 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 +845,22 @@ 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 +868,19 @@ 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;
 	}
 
@@ -899,32 +901,32 @@ static int rcar_pcie_enable_msi(struct rcar_pcie *pcie)
 	return err;
 }
 
-static int rcar_pcie_get_resources(struct platform_device *pdev,
-				   struct rcar_pcie *pcie)
+static int rcar_pcie_get_resources(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 +934,17 @@ 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;
 	}
@@ -1119,60 +1121,60 @@ static int rcar_pcie_parse_request_of_pci_ranges(struct rcar_pcie *pci)
 
 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;
-	platform_set_drvdata(pdev, pcie);
+	pcie->dev = dev;
 
 	INIT_LIST_HEAD(&pcie->resources);
 
 	rcar_pcie_parse_request_of_pci_ranges(pcie);
 
-	err = rcar_pcie_get_resources(pdev, pcie);
+	err = rcar_pcie_get_resources(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;
@@ -1186,16 +1188,16 @@ 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;
 }
 
 static struct platform_driver rcar_pcie_driver = {
 	.driver = {
-		.name = DRV_NAME,
+		.name = "rcar-pcie",
 		.of_match_table = rcar_pcie_of_match,
 		.suppress_bind_attrs = true,
 	},

drivers/pci/host/pcie-rockchip.c

@@ -1091,8 +1091,6 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
 	if (err)
 		goto err_vpcie;
 
-	platform_set_drvdata(pdev, rockchip);
-
 	rockchip_pcie_enable_interrupts(rockchip);
 
 	err = rockchip_pcie_init_irq_domain(rockchip);

drivers/pci/host/pcie-xilinx.c

@@ -140,10 +140,11 @@ static inline bool xilinx_pcie_link_is_up(struct xilinx_pcie_port *port)
  */
 static void xilinx_pcie_clear_err_interrupts(struct xilinx_pcie_port *port)
 {
+	struct device *dev = port->dev;
 	unsigned long val = pcie_read(port, XILINX_PCIE_REG_RPEFR);
 
 	if (val & XILINX_PCIE_RPEFR_ERR_VALID) {
-		dev_dbg(port->dev, "Requester ID %lu\n",
+		dev_dbg(dev, "Requester ID %lu\n",
 			val & XILINX_PCIE_RPEFR_REQ_ID);
 		pcie_write(port, XILINX_PCIE_RPEFR_ALL_MASK,
 			   XILINX_PCIE_REG_RPEFR);
@@ -228,11 +229,10 @@ static void xilinx_pcie_destroy_msi(unsigned int irq)
 
 /**
  * xilinx_pcie_assign_msi - Allocate MSI number
- * @port: PCIe port structure
  *
  * Return: A valid IRQ on success and error value on failure.
  */
-static int xilinx_pcie_assign_msi(struct xilinx_pcie_port *port)
+static int xilinx_pcie_assign_msi(void)
 {
 	int pos;
 
@@ -275,7 +275,7 @@ static int xilinx_pcie_msi_setup_irq(struct msi_controller *chip,
 	struct msi_msg msg;
 	phys_addr_t msg_addr;
 
-	hwirq = xilinx_pcie_assign_msi(port);
+	hwirq = xilinx_pcie_assign_msi();
 	if (hwirq < 0)
 		return hwirq;
 
@@ -383,6 +383,7 @@ static const struct irq_domain_ops intx_domain_ops = {
 static irqreturn_t xilinx_pcie_intr_handler(int irq, void *data)
 {
 	struct xilinx_pcie_port *port = (struct xilinx_pcie_port *)data;
+	struct device *dev = port->dev;
 	u32 val, mask, status, msi_data;
 
 	/* Read interrupt decode and mask registers */
@@ -394,32 +395,32 @@ static irqreturn_t xilinx_pcie_intr_handler(int irq, void *data)
 		return IRQ_NONE;
 
 	if (status & XILINX_PCIE_INTR_LINK_DOWN)
-		dev_warn(port->dev, "Link Down\n");
+		dev_warn(dev, "Link Down\n");
 
 	if (status & XILINX_PCIE_INTR_ECRC_ERR)
-		dev_warn(port->dev, "ECRC failed\n");
+		dev_warn(dev, "ECRC failed\n");
 
 	if (status & XILINX_PCIE_INTR_STR_ERR)
-		dev_warn(port->dev, "Streaming error\n");
+		dev_warn(dev, "Streaming error\n");
 
 	if (status & XILINX_PCIE_INTR_HOT_RESET)
-		dev_info(port->dev, "Hot reset\n");
+		dev_info(dev, "Hot reset\n");
 
 	if (status & XILINX_PCIE_INTR_CFG_TIMEOUT)
-		dev_warn(port->dev, "ECAM access timeout\n");
+		dev_warn(dev, "ECAM access timeout\n");
 
 	if (status & XILINX_PCIE_INTR_CORRECTABLE) {
-		dev_warn(port->dev, "Correctable error message\n");
+		dev_warn(dev, "Correctable error message\n");
 		xilinx_pcie_clear_err_interrupts(port);
 	}
 
 	if (status & XILINX_PCIE_INTR_NONFATAL) {
-		dev_warn(port->dev, "Non fatal error message\n");
+		dev_warn(dev, "Non fatal error message\n");
 		xilinx_pcie_clear_err_interrupts(port);
 	}
 
 	if (status & XILINX_PCIE_INTR_FATAL) {
-		dev_warn(port->dev, "Fatal error message\n");
+		dev_warn(dev, "Fatal error message\n");
 		xilinx_pcie_clear_err_interrupts(port);
 	}
 
@@ -429,7 +430,7 @@ static irqreturn_t xilinx_pcie_intr_handler(int irq, void *data)
 
 		/* Check whether interrupt valid */
 		if (!(val & XILINX_PCIE_RPIFR1_INTR_VALID)) {
-			dev_warn(port->dev, "RP Intr FIFO1 read error\n");
+			dev_warn(dev, "RP Intr FIFO1 read error\n");
 			goto error;
 		}
 
@@ -451,7 +452,7 @@ static irqreturn_t xilinx_pcie_intr_handler(int irq, void *data)
 		val = pcie_read(port, XILINX_PCIE_REG_RPIFR1);
 
 		if (!(val & XILINX_PCIE_RPIFR1_INTR_VALID)) {
-			dev_warn(port->dev, "RP Intr FIFO1 read error\n");
+			dev_warn(dev, "RP Intr FIFO1 read error\n");
 			goto error;
 		}
 
@@ -471,31 +472,31 @@ static irqreturn_t xilinx_pcie_intr_handler(int irq, void *data)
 	}
 
 	if (status & XILINX_PCIE_INTR_SLV_UNSUPP)
-		dev_warn(port->dev, "Slave unsupported request\n");
+		dev_warn(dev, "Slave unsupported request\n");
 
 	if (status & XILINX_PCIE_INTR_SLV_UNEXP)
-		dev_warn(port->dev, "Slave unexpected completion\n");
+		dev_warn(dev, "Slave unexpected completion\n");
 
 	if (status & XILINX_PCIE_INTR_SLV_COMPL)
-		dev_warn(port->dev, "Slave completion timeout\n");
+		dev_warn(dev, "Slave completion timeout\n");
 
 	if (status & XILINX_PCIE_INTR_SLV_ERRP)
-		dev_warn(port->dev, "Slave Error Poison\n");
+		dev_warn(dev, "Slave Error Poison\n");
 
 	if (status & XILINX_PCIE_INTR_SLV_CMPABT)
-		dev_warn(port->dev, "Slave Completer Abort\n");
+		dev_warn(dev, "Slave Completer Abort\n");
 
 	if (status & XILINX_PCIE_INTR_SLV_ILLBUR)
-		dev_warn(port->dev, "Slave Illegal Burst\n");
+		dev_warn(dev, "Slave Illegal Burst\n");
 
 	if (status & XILINX_PCIE_INTR_MST_DECERR)
-		dev_warn(port->dev, "Master decode error\n");
+		dev_warn(dev, "Master decode error\n");
 
 	if (status & XILINX_PCIE_INTR_MST_SLVERR)
-		dev_warn(port->dev, "Master slave error\n");
+		dev_warn(dev, "Master slave error\n");
 
 	if (status & XILINX_PCIE_INTR_MST_ERRP)
-		dev_warn(port->dev, "Master error poison\n");
+		dev_warn(dev, "Master error poison\n");
 
 error:
 	/* Clear the Interrupt Decode register */
@@ -554,10 +555,12 @@ static int xilinx_pcie_init_irq_domain(struct xilinx_pcie_port *port)
  */
 static void xilinx_pcie_init_port(struct xilinx_pcie_port *port)
 {
+	struct device *dev = port->dev;
+
 	if (xilinx_pcie_link_is_up(port))
-		dev_info(port->dev, "PCIe Link is UP\n");
+		dev_info(dev, "PCIe Link is UP\n");
 	else
-		dev_info(port->dev, "PCIe Link is DOWN\n");
+		dev_info(dev, "PCIe Link is DOWN\n");
 
 	/* Disable all interrupts */
 	pcie_write(port, ~XILINX_PCIE_IDR_ALL_MASK,
@@ -627,8 +630,8 @@ static int xilinx_pcie_parse_dt(struct xilinx_pcie_port *port)
  */
 static int xilinx_pcie_probe(struct platform_device *pdev)
 {
-	struct xilinx_pcie_port *port;
 	struct device *dev = &pdev->dev;
+	struct xilinx_pcie_port *port;
 	struct pci_bus *bus;
 	int err;
 	resource_size_t iobase = 0;
@@ -668,15 +671,14 @@ static int xilinx_pcie_probe(struct platform_device *pdev)
 	if (err)
 		goto error;
 
-	bus = pci_create_root_bus(&pdev->dev, 0,
-				  &xilinx_pcie_ops, port, &res);
+	bus = pci_create_root_bus(dev, 0, &xilinx_pcie_ops, port, &res);
 	if (!bus) {
 		err = -ENOMEM;
 		goto error;
 	}
 
 #ifdef CONFIG_PCI_MSI
-	xilinx_pcie_msi_chip.dev = port->dev;
+	xilinx_pcie_msi_chip.dev = dev;
 	bus->msi = &xilinx_pcie_msi_chip;
 #endif
 	pci_scan_child_bus(bus);
@@ -685,8 +687,6 @@ static int xilinx_pcie_probe(struct platform_device *pdev)
 	pci_fixup_irqs(pci_common_swizzle, of_irq_parse_and_map_pci);
 #endif
 	pci_bus_add_devices(bus);
-	platform_set_drvdata(pdev, port);
-
 	return 0;
 
 error: