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 <sathyanarayanan.kuppuswamy@linux.intel.com> [andy: fixed style issues, missed devm_free_irq(), removed unnecessary log message] Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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dda3ec0aa6
Коммит
d7ca5ebf24
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@ -480,52 +480,39 @@ static irqreturn_t ioc(int irq, void *dev_id)
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static int ipc_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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{
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resource_size_t pci_resource;
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struct intel_pmc_ipc_dev *pmc = &ipcdev;
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int ret;
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int len;
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ipcdev.dev = &pci_dev_get(pdev)->dev;
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ipcdev.irq_mode = IPC_TRIGGER_MODE_IRQ;
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ret = pci_enable_device(pdev);
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if (ret)
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return ret;
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ret = pci_request_regions(pdev, "intel_pmc_ipc");
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if (ret)
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return ret;
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pci_resource = pci_resource_start(pdev, 0);
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len = pci_resource_len(pdev, 0);
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if (!pci_resource || !len) {
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dev_err(&pdev->dev, "Failed to get resource\n");
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return -ENOMEM;
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}
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init_completion(&ipcdev.cmd_complete);
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if (request_irq(pdev->irq, ioc, 0, "intel_pmc_ipc", &ipcdev)) {
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dev_err(&pdev->dev, "Failed to request irq\n");
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/* Only one PMC is supported */
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if (pmc->dev)
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return -EBUSY;
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pmc->irq_mode = IPC_TRIGGER_MODE_IRQ;
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ret = pcim_enable_device(pdev);
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if (ret)
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return ret;
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ret = pcim_iomap_regions(pdev, 1 << 0, pci_name(pdev));
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if (ret)
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return ret;
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init_completion(&pmc->cmd_complete);
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pmc->ipc_base = pcim_iomap_table(pdev)[0];
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ret = devm_request_irq(&pdev->dev, pdev->irq, ioc, 0, "intel_pmc_ipc",
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pmc);
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if (ret) {
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dev_err(&pdev->dev, "Failed to request irq\n");
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return ret;
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}
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ipcdev.ipc_base = ioremap_nocache(pci_resource, len);
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if (!ipcdev.ipc_base) {
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dev_err(&pdev->dev, "Failed to ioremap ipc base\n");
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free_irq(pdev->irq, &ipcdev);
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ret = -ENOMEM;
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}
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pmc->dev = &pdev->dev;
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return ret;
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}
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pci_set_drvdata(pdev, pmc);
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static void ipc_pci_remove(struct pci_dev *pdev)
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{
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free_irq(pdev->irq, &ipcdev);
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pci_release_regions(pdev);
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pci_dev_put(pdev);
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iounmap(ipcdev.ipc_base);
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ipcdev.dev = NULL;
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return 0;
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}
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static const struct pci_device_id ipc_pci_ids[] = {
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@ -540,7 +527,6 @@ static struct pci_driver ipc_pci_driver = {
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.name = "intel_pmc_ipc",
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.id_table = ipc_pci_ids,
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.probe = ipc_pci_probe,
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.remove = ipc_pci_remove,
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};
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static ssize_t intel_pmc_ipc_simple_cmd_store(struct device *dev,
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@ -850,17 +836,12 @@ static int ipc_plat_get_res(struct platform_device *pdev)
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return -ENXIO;
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}
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size = PLAT_RESOURCE_IPC_SIZE + PLAT_RESOURCE_GCR_SIZE;
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res->end = res->start + size - 1;
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addr = devm_ioremap_resource(&pdev->dev, res);
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if (IS_ERR(addr))
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return PTR_ERR(addr);
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if (!request_mem_region(res->start, size, pdev->name)) {
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dev_err(&pdev->dev, "Failed to request ipc resource\n");
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return -EBUSY;
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}
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addr = ioremap_nocache(res->start, size);
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if (!addr) {
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dev_err(&pdev->dev, "I/O memory remapping failed\n");
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release_mem_region(res->start, size);
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return -ENOMEM;
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}
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ipcdev.ipc_base = addr;
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ipcdev.gcr_mem_base = addr + PLAT_RESOURCE_GCR_OFFSET;
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@ -917,7 +898,6 @@ MODULE_DEVICE_TABLE(acpi, ipc_acpi_ids);
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static int ipc_plat_probe(struct platform_device *pdev)
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{
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struct resource *res;
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int ret;
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ipcdev.dev = &pdev->dev;
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@ -939,11 +919,11 @@ static int ipc_plat_probe(struct platform_device *pdev)
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ret = ipc_create_pmc_devices();
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if (ret) {
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dev_err(&pdev->dev, "Failed to create pmc devices\n");
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goto err_device;
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return ret;
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}
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if (request_irq(ipcdev.irq, ioc, IRQF_NO_SUSPEND,
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"intel_pmc_ipc", &ipcdev)) {
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if (devm_request_irq(&pdev->dev, ipcdev.irq, ioc, IRQF_NO_SUSPEND,
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"intel_pmc_ipc", &ipcdev)) {
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dev_err(&pdev->dev, "Failed to request irq\n");
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ret = -EBUSY;
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goto err_irq;
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@ -960,40 +940,22 @@ static int ipc_plat_probe(struct platform_device *pdev)
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return 0;
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err_sys:
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free_irq(ipcdev.irq, &ipcdev);
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devm_free_irq(&pdev->dev, ipcdev.irq, &ipcdev);
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err_irq:
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platform_device_unregister(ipcdev.tco_dev);
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platform_device_unregister(ipcdev.punit_dev);
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platform_device_unregister(ipcdev.telemetry_dev);
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err_device:
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iounmap(ipcdev.ipc_base);
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res = platform_get_resource(pdev, IORESOURCE_MEM,
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PLAT_RESOURCE_IPC_INDEX);
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if (res) {
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release_mem_region(res->start,
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PLAT_RESOURCE_IPC_SIZE +
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PLAT_RESOURCE_GCR_SIZE);
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}
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return ret;
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}
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static int ipc_plat_remove(struct platform_device *pdev)
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{
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struct resource *res;
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sysfs_remove_group(&pdev->dev.kobj, &intel_ipc_group);
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free_irq(ipcdev.irq, &ipcdev);
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devm_free_irq(&pdev->dev, ipcdev.irq, &ipcdev);
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platform_device_unregister(ipcdev.tco_dev);
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platform_device_unregister(ipcdev.punit_dev);
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platform_device_unregister(ipcdev.telemetry_dev);
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iounmap(ipcdev.ipc_base);
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res = platform_get_resource(pdev, IORESOURCE_MEM,
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PLAT_RESOURCE_IPC_INDEX);
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if (res) {
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release_mem_region(res->start,
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PLAT_RESOURCE_IPC_SIZE +
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PLAT_RESOURCE_GCR_SIZE);
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}
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ipcdev.dev = NULL;
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return 0;
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}
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