From 2bd942f90a6021d5d9f49c28663f38f5b575a818 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Fri, 9 Nov 2012 23:56:59 -0800 Subject: Input: stmpe-ts - switch to using managed resources This patch frees stmpe-ts driver from burden of freeing resources :) devm_* derivatives of multiple routines are used while allocating resources, which would be freed automatically by kernel. Signed-off-by: Viresh Kumar Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/stmpe-ts.c | 67 +++++++++++++----------------------- 1 file changed, 23 insertions(+), 44 deletions(-) diff --git a/drivers/input/touchscreen/stmpe-ts.c b/drivers/input/touchscreen/stmpe-ts.c index 692b685720c..7d9aadcef15 100644 --- a/drivers/input/touchscreen/stmpe-ts.c +++ b/drivers/input/touchscreen/stmpe-ts.c @@ -1,4 +1,5 @@ -/* STMicroelectronics STMPE811 Touchscreen Driver +/* + * STMicroelectronics STMPE811 Touchscreen Driver * * (C) 2010 Luotao Fu * All rights reserved. @@ -264,28 +265,24 @@ static void stmpe_ts_close(struct input_dev *dev) static int __devinit stmpe_input_probe(struct platform_device *pdev) { struct stmpe *stmpe = dev_get_drvdata(pdev->dev.parent); - struct stmpe_platform_data *pdata = stmpe->pdata; + const struct stmpe_platform_data *pdata = stmpe->pdata; + const struct stmpe_ts_platform_data *ts_pdata = NULL; struct stmpe_touch *ts; struct input_dev *idev; - struct stmpe_ts_platform_data *ts_pdata = NULL; - int ret; + int error; int ts_irq; ts_irq = platform_get_irq_byname(pdev, "FIFO_TH"); if (ts_irq < 0) return ts_irq; - ts = kzalloc(sizeof(*ts), GFP_KERNEL); - if (!ts) { - ret = -ENOMEM; - goto err_out; - } + ts = devm_kzalloc(&pdev->dev, sizeof(*ts), GFP_KERNEL); + if (!ts) + return -ENOMEM; - idev = input_allocate_device(); - if (!idev) { - ret = -ENOMEM; - goto err_free_ts; - } + idev = devm_input_allocate_device(&pdev->dev); + if (!idev) + return -ENOMEM; platform_set_drvdata(pdev, ts); ts->stmpe = stmpe; @@ -309,16 +306,17 @@ static int __devinit stmpe_input_probe(struct platform_device *pdev) INIT_DELAYED_WORK(&ts->work, stmpe_work); - ret = request_threaded_irq(ts_irq, NULL, stmpe_ts_handler, - IRQF_ONESHOT, STMPE_TS_NAME, ts); - if (ret) { + error = devm_request_threaded_irq(&pdev->dev, ts_irq, + NULL, stmpe_ts_handler, + IRQF_ONESHOT, STMPE_TS_NAME, ts); + if (error) { dev_err(&pdev->dev, "Failed to request IRQ %d\n", ts_irq); - goto err_free_input; + return error; } - ret = stmpe_init_hw(ts); - if (ret) - goto err_free_irq; + error = stmpe_init_hw(ts); + if (error) + return error; idev->name = STMPE_TS_NAME; idev->id.bustype = BUS_I2C; @@ -334,40 +332,21 @@ static int __devinit stmpe_input_probe(struct platform_device *pdev) input_set_abs_params(idev, ABS_Y, 0, XY_MASK, 0, 0); input_set_abs_params(idev, ABS_PRESSURE, 0x0, 0xff, 0, 0); - ret = input_register_device(idev); - if (ret) { + error = input_register_device(idev); + if (error) { dev_err(&pdev->dev, "Could not register input device\n"); - goto err_free_irq; + return error; } - return ret; - -err_free_irq: - free_irq(ts_irq, ts); -err_free_input: - input_free_device(idev); - platform_set_drvdata(pdev, NULL); -err_free_ts: - kfree(ts); -err_out: - return ret; + return 0; } static int __devexit stmpe_ts_remove(struct platform_device *pdev) { struct stmpe_touch *ts = platform_get_drvdata(pdev); - unsigned int ts_irq = platform_get_irq_byname(pdev, "FIFO_TH"); stmpe_disable(ts->stmpe, STMPE_BLOCK_TOUCHSCREEN); - free_irq(ts_irq, ts); - - platform_set_drvdata(pdev, NULL); - - input_unregister_device(ts->idev); - - kfree(ts); - return 0; } -- cgit v1.2.3-18-g5258