[v2,09/25] PCI: mobiveil: Use pci_parse_request_of_pci_ranges()
diff mbox series

Message ID 20191016200647.32050-10-robh@kernel.org
State New
Headers show
Series
  • PCI host resource consolidation
Related show

Commit Message

Rob Herring Oct. 16, 2019, 8:06 p.m. UTC
Convert the Mobiveil host bridge to use the common
pci_parse_request_of_pci_ranges().

There's no need to assign the resources to a temporary list first. Just
use bridge->windows directly and remove all the temporary list handling.

Cc: Karthikeyan Mitran <m.karthikeyan@mobiveil.co.in>
Cc: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Andrew Murray <andrew.murray@arm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Rob Herring <robh@kernel.org>
---
v2:
- New patch

 drivers/pci/controller/pcie-mobiveil.c | 26 +++++++-------------------
 1 file changed, 7 insertions(+), 19 deletions(-)

--
2.20.1

Comments

Andrew Murray Oct. 18, 2019, 3:41 p.m. UTC | #1
On Wed, Oct 16, 2019 at 03:06:31PM -0500, Rob Herring wrote:
> Convert the Mobiveil host bridge to use the common
> pci_parse_request_of_pci_ranges().
> 
> There's no need to assign the resources to a temporary list first. Just
> use bridge->windows directly and remove all the temporary list handling.
> 
> Cc: Karthikeyan Mitran <m.karthikeyan@mobiveil.co.in>
> Cc: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
> Cc: Andrew Murray <andrew.murray@arm.com>
> Cc: Bjorn Helgaas <bhelgaas@google.com>
> Signed-off-by: Rob Herring <robh@kernel.org>
> ---

Reviewed-by: Andrew Murray <andrew.murray@arm.com>

> v2:
> - New patch
> 
>  drivers/pci/controller/pcie-mobiveil.c | 26 +++++++-------------------
>  1 file changed, 7 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/pci/controller/pcie-mobiveil.c b/drivers/pci/controller/pcie-mobiveil.c
> index a45a6447b01d..4eab8624ce4d 100644
> --- a/drivers/pci/controller/pcie-mobiveil.c
> +++ b/drivers/pci/controller/pcie-mobiveil.c
> @@ -140,7 +140,6 @@ struct mobiveil_msi {			/* MSI information */
> 
>  struct mobiveil_pcie {
>  	struct platform_device *pdev;
> -	struct list_head resources;
>  	void __iomem *config_axi_slave_base;	/* endpoint config base */
>  	void __iomem *csr_axi_slave_base;	/* root port config base */
>  	void __iomem *apb_csr_base;	/* MSI register base */
> @@ -575,6 +574,7 @@ static void mobiveil_pcie_enable_msi(struct mobiveil_pcie *pcie)
> 
>  static int mobiveil_host_init(struct mobiveil_pcie *pcie)
>  {
> +	struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie);
>  	u32 value, pab_ctrl, type;
>  	struct resource_entry *win;
> 
> @@ -631,7 +631,7 @@ static int mobiveil_host_init(struct mobiveil_pcie *pcie)
>  	program_ib_windows(pcie, WIN_NUM_0, 0, 0, MEM_WINDOW_TYPE, IB_WIN_SIZE);
> 
>  	/* Get the I/O and memory ranges from DT */
> -	resource_list_for_each_entry(win, &pcie->resources) {
> +	resource_list_for_each_entry(win, &bridge->windows) {
>  		if (resource_type(win->res) == IORESOURCE_MEM)
>  			type = MEM_WINDOW_TYPE;
>  		else if (resource_type(win->res) == IORESOURCE_IO)
> @@ -857,7 +857,6 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
>  	struct pci_bus *child;
>  	struct pci_host_bridge *bridge;
>  	struct device *dev = &pdev->dev;
> -	resource_size_t iobase;
>  	int ret;
> 
>  	/* allocate the PCIe port */
> @@ -875,11 +874,8 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
>  		return ret;
>  	}
> 
> -	INIT_LIST_HEAD(&pcie->resources);
> -
>  	/* parse the host bridge base addresses from the device tree file */
> -	ret = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff,
> -						    &pcie->resources, &iobase);
> +	ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, NULL);
>  	if (ret) {
>  		dev_err(dev, "Getting bridge resources failed\n");
>  		return ret;
> @@ -892,24 +888,19 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
>  	ret = mobiveil_host_init(pcie);
>  	if (ret) {
>  		dev_err(dev, "Failed to initialize host\n");
> -		goto error;
> +		return ret;
>  	}
> 
>  	/* initialize the IRQ domains */
>  	ret = mobiveil_pcie_init_irq_domain(pcie);
>  	if (ret) {
>  		dev_err(dev, "Failed creating IRQ Domain\n");
> -		goto error;
> +		return ret;
>  	}
> 
>  	irq_set_chained_handler_and_data(pcie->irq, mobiveil_pcie_isr, pcie);
> 
> -	ret = devm_request_pci_bus_resources(dev, &pcie->resources);
> -	if (ret)
> -		goto error;
> -
>  	/* Initialize bridge */
> -	list_splice_init(&pcie->resources, &bridge->windows);
>  	bridge->dev.parent = dev;
>  	bridge->sysdata = pcie;
>  	bridge->busnr = pcie->root_bus_nr;
> @@ -920,13 +911,13 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
>  	ret = mobiveil_bringup_link(pcie);
>  	if (ret) {
>  		dev_info(dev, "link bring-up failed\n");
> -		goto error;
> +		return ret;
>  	}
> 
>  	/* setup the kernel resources for the newly added PCIe root bus */
>  	ret = pci_scan_root_bus_bridge(bridge);
>  	if (ret)
> -		goto error;
> +		return ret;
> 
>  	bus = bridge->bus;
> 
> @@ -936,9 +927,6 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
>  	pci_bus_add_devices(bus);
> 
>  	return 0;
> -error:
> -	pci_free_resource_list(&pcie->resources);
> -	return ret;
>  }
> 
>  static const struct of_device_id mobiveil_pcie_of_match[] = {
> --
> 2.20.1

Patch
diff mbox series

diff --git a/drivers/pci/controller/pcie-mobiveil.c b/drivers/pci/controller/pcie-mobiveil.c
index a45a6447b01d..4eab8624ce4d 100644
--- a/drivers/pci/controller/pcie-mobiveil.c
+++ b/drivers/pci/controller/pcie-mobiveil.c
@@ -140,7 +140,6 @@  struct mobiveil_msi {			/* MSI information */

 struct mobiveil_pcie {
 	struct platform_device *pdev;
-	struct list_head resources;
 	void __iomem *config_axi_slave_base;	/* endpoint config base */
 	void __iomem *csr_axi_slave_base;	/* root port config base */
 	void __iomem *apb_csr_base;	/* MSI register base */
@@ -575,6 +574,7 @@  static void mobiveil_pcie_enable_msi(struct mobiveil_pcie *pcie)

 static int mobiveil_host_init(struct mobiveil_pcie *pcie)
 {
+	struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie);
 	u32 value, pab_ctrl, type;
 	struct resource_entry *win;

@@ -631,7 +631,7 @@  static int mobiveil_host_init(struct mobiveil_pcie *pcie)
 	program_ib_windows(pcie, WIN_NUM_0, 0, 0, MEM_WINDOW_TYPE, IB_WIN_SIZE);

 	/* Get the I/O and memory ranges from DT */
-	resource_list_for_each_entry(win, &pcie->resources) {
+	resource_list_for_each_entry(win, &bridge->windows) {
 		if (resource_type(win->res) == IORESOURCE_MEM)
 			type = MEM_WINDOW_TYPE;
 		else if (resource_type(win->res) == IORESOURCE_IO)
@@ -857,7 +857,6 @@  static int mobiveil_pcie_probe(struct platform_device *pdev)
 	struct pci_bus *child;
 	struct pci_host_bridge *bridge;
 	struct device *dev = &pdev->dev;
-	resource_size_t iobase;
 	int ret;

 	/* allocate the PCIe port */
@@ -875,11 +874,8 @@  static int mobiveil_pcie_probe(struct platform_device *pdev)
 		return ret;
 	}

-	INIT_LIST_HEAD(&pcie->resources);
-
 	/* parse the host bridge base addresses from the device tree file */
-	ret = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff,
-						    &pcie->resources, &iobase);
+	ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, NULL);
 	if (ret) {
 		dev_err(dev, "Getting bridge resources failed\n");
 		return ret;
@@ -892,24 +888,19 @@  static int mobiveil_pcie_probe(struct platform_device *pdev)
 	ret = mobiveil_host_init(pcie);
 	if (ret) {
 		dev_err(dev, "Failed to initialize host\n");
-		goto error;
+		return ret;
 	}

 	/* initialize the IRQ domains */
 	ret = mobiveil_pcie_init_irq_domain(pcie);
 	if (ret) {
 		dev_err(dev, "Failed creating IRQ Domain\n");
-		goto error;
+		return ret;
 	}

 	irq_set_chained_handler_and_data(pcie->irq, mobiveil_pcie_isr, pcie);

-	ret = devm_request_pci_bus_resources(dev, &pcie->resources);
-	if (ret)
-		goto error;
-
 	/* Initialize bridge */
-	list_splice_init(&pcie->resources, &bridge->windows);
 	bridge->dev.parent = dev;
 	bridge->sysdata = pcie;
 	bridge->busnr = pcie->root_bus_nr;
@@ -920,13 +911,13 @@  static int mobiveil_pcie_probe(struct platform_device *pdev)
 	ret = mobiveil_bringup_link(pcie);
 	if (ret) {
 		dev_info(dev, "link bring-up failed\n");
-		goto error;
+		return ret;
 	}

 	/* setup the kernel resources for the newly added PCIe root bus */
 	ret = pci_scan_root_bus_bridge(bridge);
 	if (ret)
-		goto error;
+		return ret;

 	bus = bridge->bus;

@@ -936,9 +927,6 @@  static int mobiveil_pcie_probe(struct platform_device *pdev)
 	pci_bus_add_devices(bus);

 	return 0;
-error:
-	pci_free_resource_list(&pcie->resources);
-	return ret;
 }

 static const struct of_device_id mobiveil_pcie_of_match[] = {