devm_* functions are device managed and make error handling and code simpler.
Signed-off-by: Sachin Kamat <[email protected]> --- drivers/input/keyboard/samsung-keypad.c | 59 +++++++++--------------------- 1 files changed, 18 insertions(+), 41 deletions(-) diff --git a/drivers/input/keyboard/samsung-keypad.c b/drivers/input/keyboard/samsung-keypad.c index 9d7a111..abf6d3d 100644 --- a/drivers/input/keyboard/samsung-keypad.c +++ b/drivers/input/keyboard/samsung-keypad.c @@ -405,36 +405,29 @@ static int __devinit samsung_keypad_probe(struct platform_device *pdev) row_shift = get_count_order(pdata->cols); keymap_size = (pdata->rows << row_shift) * sizeof(keypad->keycodes[0]); - keypad = kzalloc(sizeof(*keypad) + keymap_size, GFP_KERNEL); - input_dev = input_allocate_device(); - if (!keypad || !input_dev) { - error = -ENOMEM; - goto err_free_mem; - } + keypad = devm_kzalloc(&pdev->dev, sizeof(*keypad) + keymap_size, GFP_KERNEL); + input_dev = devm_input_allocate_device(&pdev->dev); + if (!keypad || !input_dev) + return -ENOMEM; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - error = -ENODEV; - goto err_free_mem; - } + if (!res) + return -ENODEV; - keypad->base = ioremap(res->start, resource_size(res)); - if (!keypad->base) { - error = -EBUSY; - goto err_free_mem; - } + keypad->base = devm_ioremap(&pdev->dev, res->start, resource_size(res)); + if (!keypad->base) + return -EBUSY; - keypad->clk = clk_get(&pdev->dev, "keypad"); + keypad->clk = devm_clk_get(&pdev->dev, "keypad"); if (IS_ERR(keypad->clk)) { dev_err(&pdev->dev, "failed to get keypad clk\n"); - error = PTR_ERR(keypad->clk); - goto err_unmap_base; + return PTR_ERR(keypad->clk); } error = clk_prepare(keypad->clk); if (error) { dev_err(&pdev->dev, "keypad clock prepare failed\n"); - goto err_put_clk; + goto err_dt_gpio_free; } keypad->input_dev = input_dev; @@ -479,14 +472,15 @@ static int __devinit samsung_keypad_probe(struct platform_device *pdev) keypad->irq = platform_get_irq(pdev, 0); if (keypad->irq < 0) { error = keypad->irq; - goto err_put_clk; + goto err_dt_gpio_free; } - error = request_threaded_irq(keypad->irq, NULL, samsung_keypad_irq, - IRQF_ONESHOT, dev_name(&pdev->dev), keypad); + error = devm_request_threaded_irq(&pdev->dev, keypad->irq, NULL, + samsung_keypad_irq, IRQF_ONESHOT, + dev_name(&pdev->dev), keypad); if (error) { dev_err(&pdev->dev, "failed to register keypad interrupt\n"); - goto err_put_clk; + goto err_dt_gpio_free; } device_init_wakeup(&pdev->dev, pdata->wakeup); @@ -505,20 +499,13 @@ static int __devinit samsung_keypad_probe(struct platform_device *pdev) return 0; err_free_irq: - free_irq(keypad->irq, keypad); pm_runtime_disable(&pdev->dev); device_init_wakeup(&pdev->dev, 0); platform_set_drvdata(pdev, NULL); err_unprepare_clk: clk_unprepare(keypad->clk); -err_put_clk: - clk_put(keypad->clk); +err_dt_gpio_free: samsung_keypad_dt_gpio_free(keypad); -err_unmap_base: - iounmap(keypad->base); -err_free_mem: - input_free_device(input_dev); - kfree(keypad); return error; } @@ -533,19 +520,9 @@ static int __devexit samsung_keypad_remove(struct platform_device *pdev) input_unregister_device(keypad->input_dev); - /* - * It is safe to free IRQ after unregistering device because - * samsung_keypad_close will shut off interrupts. - */ - free_irq(keypad->irq, keypad); - clk_unprepare(keypad->clk); - clk_put(keypad->clk); samsung_keypad_dt_gpio_free(keypad); - iounmap(keypad->base); - kfree(keypad); - return 0; } -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
