From 83beee5c88a6c71ded70e2eef5ca7406a02605cc Mon Sep 17 00:00:00 2001 From: Kuppuswamy Sathyanarayanan Date: Mon, 4 Sep 2017 22:37:21 -0700 Subject: [PATCH] platform/x86: intel_pmc_ipc: Use devm_* calls in driver probe function This patch cleans up unnecessary free/alloc calls in ipc_plat_probe(), ipc_pci_probe() and ipc_plat_get_res() functions by using devm_* calls. This patch also adds proper error handling for failure cases in ipc_pci_probe() function. Signed-off-by: Kuppuswamy Sathyanarayanan [andy: fixed style issues, missed devm_free_irq(), removed unnecessary log message] Signed-off-by: Andy Shevchenko --- drivers/platform/x86/intel_pmc_ipc.c | 94 +++++++++------------------- 1 file changed, 28 insertions(+), 66 deletions(-) diff --git a/drivers/platform/x86/intel_pmc_ipc.c b/drivers/platform/x86/intel_pmc_ipc.c index bb792a52248b..751b1212d01c 100644 --- a/drivers/platform/x86/intel_pmc_ipc.c +++ b/drivers/platform/x86/intel_pmc_ipc.c @@ -480,52 +480,39 @@ static irqreturn_t ioc(int irq, void *dev_id) static int ipc_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) { - resource_size_t pci_resource; + struct intel_pmc_ipc_dev *pmc = &ipcdev; int ret; - int len; - ipcdev.dev = &pci_dev_get(pdev)->dev; - ipcdev.irq_mode = IPC_TRIGGER_MODE_IRQ; + /* Only one PMC is supported */ + if (pmc->dev) + return -EBUSY; - ret = pci_enable_device(pdev); + pmc->irq_mode = IPC_TRIGGER_MODE_IRQ; + + ret = pcim_enable_device(pdev); if (ret) return ret; - ret = pci_request_regions(pdev, "intel_pmc_ipc"); + ret = pcim_iomap_regions(pdev, 1 << 0, pci_name(pdev)); if (ret) return ret; - pci_resource = pci_resource_start(pdev, 0); - len = pci_resource_len(pdev, 0); - if (!pci_resource || !len) { - dev_err(&pdev->dev, "Failed to get resource\n"); - return -ENOMEM; - } + init_completion(&pmc->cmd_complete); - init_completion(&ipcdev.cmd_complete); + pmc->ipc_base = pcim_iomap_table(pdev)[0]; - if (request_irq(pdev->irq, ioc, 0, "intel_pmc_ipc", &ipcdev)) { + ret = devm_request_irq(&pdev->dev, pdev->irq, ioc, 0, "intel_pmc_ipc", + pmc); + if (ret) { dev_err(&pdev->dev, "Failed to request irq\n"); - return -EBUSY; + return ret; } - ipcdev.ipc_base = ioremap_nocache(pci_resource, len); - if (!ipcdev.ipc_base) { - dev_err(&pdev->dev, "Failed to ioremap ipc base\n"); - free_irq(pdev->irq, &ipcdev); - ret = -ENOMEM; - } + pmc->dev = &pdev->dev; - return ret; -} + pci_set_drvdata(pdev, pmc); -static void ipc_pci_remove(struct pci_dev *pdev) -{ - free_irq(pdev->irq, &ipcdev); - pci_release_regions(pdev); - pci_dev_put(pdev); - iounmap(ipcdev.ipc_base); - ipcdev.dev = NULL; + return 0; } static const struct pci_device_id ipc_pci_ids[] = { @@ -540,7 +527,6 @@ static struct pci_driver ipc_pci_driver = { .name = "intel_pmc_ipc", .id_table = ipc_pci_ids, .probe = ipc_pci_probe, - .remove = ipc_pci_remove, }; static ssize_t intel_pmc_ipc_simple_cmd_store(struct device *dev, @@ -850,17 +836,12 @@ static int ipc_plat_get_res(struct platform_device *pdev) return -ENXIO; } size = PLAT_RESOURCE_IPC_SIZE + PLAT_RESOURCE_GCR_SIZE; + res->end = res->start + size - 1; + + addr = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(addr)) + return PTR_ERR(addr); - if (!request_mem_region(res->start, size, pdev->name)) { - dev_err(&pdev->dev, "Failed to request ipc resource\n"); - return -EBUSY; - } - addr = ioremap_nocache(res->start, size); - if (!addr) { - dev_err(&pdev->dev, "I/O memory remapping failed\n"); - release_mem_region(res->start, size); - return -ENOMEM; - } ipcdev.ipc_base = addr; ipcdev.gcr_mem_base = addr + PLAT_RESOURCE_GCR_OFFSET; @@ -917,7 +898,6 @@ MODULE_DEVICE_TABLE(acpi, ipc_acpi_ids); static int ipc_plat_probe(struct platform_device *pdev) { - struct resource *res; int ret; ipcdev.dev = &pdev->dev; @@ -939,11 +919,11 @@ static int ipc_plat_probe(struct platform_device *pdev) ret = ipc_create_pmc_devices(); if (ret) { dev_err(&pdev->dev, "Failed to create pmc devices\n"); - goto err_device; + return ret; } - if (request_irq(ipcdev.irq, ioc, IRQF_NO_SUSPEND, - "intel_pmc_ipc", &ipcdev)) { + if (devm_request_irq(&pdev->dev, ipcdev.irq, ioc, IRQF_NO_SUSPEND, + "intel_pmc_ipc", &ipcdev)) { dev_err(&pdev->dev, "Failed to request irq\n"); ret = -EBUSY; goto err_irq; @@ -960,40 +940,22 @@ static int ipc_plat_probe(struct platform_device *pdev) return 0; err_sys: - free_irq(ipcdev.irq, &ipcdev); + devm_free_irq(&pdev->dev, ipcdev.irq, &ipcdev); err_irq: platform_device_unregister(ipcdev.tco_dev); platform_device_unregister(ipcdev.punit_dev); platform_device_unregister(ipcdev.telemetry_dev); -err_device: - iounmap(ipcdev.ipc_base); - res = platform_get_resource(pdev, IORESOURCE_MEM, - PLAT_RESOURCE_IPC_INDEX); - if (res) { - release_mem_region(res->start, - PLAT_RESOURCE_IPC_SIZE + - PLAT_RESOURCE_GCR_SIZE); - } + return ret; } static int ipc_plat_remove(struct platform_device *pdev) { - struct resource *res; - sysfs_remove_group(&pdev->dev.kobj, &intel_ipc_group); - free_irq(ipcdev.irq, &ipcdev); + devm_free_irq(&pdev->dev, ipcdev.irq, &ipcdev); platform_device_unregister(ipcdev.tco_dev); platform_device_unregister(ipcdev.punit_dev); platform_device_unregister(ipcdev.telemetry_dev); - iounmap(ipcdev.ipc_base); - res = platform_get_resource(pdev, IORESOURCE_MEM, - PLAT_RESOURCE_IPC_INDEX); - if (res) { - release_mem_region(res->start, - PLAT_RESOURCE_IPC_SIZE + - PLAT_RESOURCE_GCR_SIZE); - } ipcdev.dev = NULL; return 0; } -- 2.20.1