From 9d8a7f16f47fca776b60ab63901dc8481ceb6e1f Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Thu, 2 May 2013 14:52:16 +0900 Subject: [PATCH] watchdog: ts72xx_wdt: use devm_*() functions Use devm_*() functions to make cleanup paths simpler. Signed-off-by: Jingoo Han Acked-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/ts72xx_wdt.c | 67 ++++++----------------------------- 1 file changed, 10 insertions(+), 57 deletions(-) diff --git a/drivers/watchdog/ts72xx_wdt.c b/drivers/watchdog/ts72xx_wdt.c index b8a92459f10f..4da59b4d73f0 100644 --- a/drivers/watchdog/ts72xx_wdt.c +++ b/drivers/watchdog/ts72xx_wdt.c @@ -396,7 +396,7 @@ static int ts72xx_wdt_probe(struct platform_device *pdev) struct resource *r1, *r2; int error = 0; - wdt = kzalloc(sizeof(struct ts72xx_wdt), GFP_KERNEL); + wdt = devm_kzalloc(&pdev->dev, sizeof(struct ts72xx_wdt), GFP_KERNEL); if (!wdt) { dev_err(&pdev->dev, "failed to allocate memory\n"); return -ENOMEM; @@ -405,44 +405,22 @@ static int ts72xx_wdt_probe(struct platform_device *pdev) r1 = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!r1) { dev_err(&pdev->dev, "failed to get memory resource\n"); - error = -ENODEV; - goto fail; + return -ENODEV; } - r1 = request_mem_region(r1->start, resource_size(r1), pdev->name); - if (!r1) { - dev_err(&pdev->dev, "cannot request memory region\n"); - error = -EBUSY; - goto fail; - } - - wdt->control_reg = ioremap(r1->start, resource_size(r1)); - if (!wdt->control_reg) { - dev_err(&pdev->dev, "failed to map memory\n"); - error = -ENODEV; - goto fail_free_control; - } + wdt->control_reg = devm_ioremap_resource(&pdev->dev, r1); + if (IS_ERR(wdt->control_reg)) + return PTR_ERR(wdt->control_reg); r2 = platform_get_resource(pdev, IORESOURCE_MEM, 1); if (!r2) { dev_err(&pdev->dev, "failed to get memory resource\n"); - error = -ENODEV; - goto fail_unmap_control; - } - - r2 = request_mem_region(r2->start, resource_size(r2), pdev->name); - if (!r2) { - dev_err(&pdev->dev, "cannot request memory region\n"); - error = -EBUSY; - goto fail_unmap_control; + return -ENODEV; } - wdt->feed_reg = ioremap(r2->start, resource_size(r2)); - if (!wdt->feed_reg) { - dev_err(&pdev->dev, "failed to map memory\n"); - error = -ENODEV; - goto fail_free_feed; - } + wdt->feed_reg = devm_ioremap_resource(&pdev->dev, r2); + if (IS_ERR(wdt->feed_reg)) + return PTR_ERR(wdt->feed_reg); platform_set_drvdata(pdev, wdt); ts72xx_wdt_pdev = pdev; @@ -455,45 +433,20 @@ static int ts72xx_wdt_probe(struct platform_device *pdev) error = misc_register(&ts72xx_wdt_miscdev); if (error) { dev_err(&pdev->dev, "failed to register miscdev\n"); - goto fail_unmap_feed; + return error; } dev_info(&pdev->dev, "TS-72xx Watchdog driver\n"); return 0; - -fail_unmap_feed: - platform_set_drvdata(pdev, NULL); - iounmap(wdt->feed_reg); -fail_free_feed: - release_mem_region(r2->start, resource_size(r2)); -fail_unmap_control: - iounmap(wdt->control_reg); -fail_free_control: - release_mem_region(r1->start, resource_size(r1)); -fail: - kfree(wdt); - return error; } static int ts72xx_wdt_remove(struct platform_device *pdev) { - struct ts72xx_wdt *wdt = platform_get_drvdata(pdev); - struct resource *res; int error; error = misc_deregister(&ts72xx_wdt_miscdev); - platform_set_drvdata(pdev, NULL); - - iounmap(wdt->feed_reg); - res = platform_get_resource(pdev, IORESOURCE_MEM, 1); - release_mem_region(res->start, resource_size(res)); - - iounmap(wdt->control_reg); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(res->start, resource_size(res)); - kfree(wdt); return error; } -- 2.20.1