Input: touchscreens - handle errors when registering input devices

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/touchscreen/corgi_ts.c

@@ -175,17 +175,19 @@ static int read_xydata(struct corgi_ts *corgi_ts)
 
 static void new_data(struct corgi_ts *corgi_ts)
 {
+	struct input_dev *dev = corgi_ts->input;
+
 	if (corgi_ts->power_mode != PWR_MODE_ACTIVE)
 		return;
 
 	if (!corgi_ts->tc.pressure && corgi_ts->pendown == 0)
 		return;
 
-	input_report_abs(corgi_ts->input, ABS_X, corgi_ts->tc.x);
-	input_report_abs(corgi_ts->input, ABS_Y, corgi_ts->tc.y);
-	input_report_abs(corgi_ts->input, ABS_PRESSURE, corgi_ts->tc.pressure);
-	input_report_key(corgi_ts->input, BTN_TOUCH, (corgi_ts->pendown != 0));
-	input_sync(corgi_ts->input);
+	input_report_abs(dev, ABS_X, corgi_ts->tc.x);
+	input_report_abs(dev, ABS_Y, corgi_ts->tc.y);
+	input_report_abs(dev, ABS_PRESSURE, corgi_ts->tc.pressure);
+	input_report_key(dev, BTN_TOUCH, corgi_ts->pendown);
+	input_sync(dev);
 }
 
 static void ts_interrupt_main(struct corgi_ts *corgi_ts, int isTimer)
@@ -219,12 +221,14 @@ static void ts_interrupt_main(struct corgi_ts *corgi_ts, int isTimer)
 static void corgi_ts_timer(unsigned long data)
 {
 	struct corgi_ts *corgits_data = (struct corgi_ts *) data;
+
 	ts_interrupt_main(corgits_data, 1);
 }
 
 static irqreturn_t ts_interrupt(int irq, void *dev_id)
 {
 	struct corgi_ts *corgits_data = dev_id;
+
 	ts_interrupt_main(corgits_data, 0);
 	return IRQ_HANDLED;
 }
@@ -272,7 +276,7 @@ static int __init corgits_probe(struct platform_device *pdev)
 	corgi_ts = kzalloc(sizeof(struct corgi_ts), GFP_KERNEL);
 	input_dev = input_allocate_device();
 	if (!corgi_ts || !input_dev)
-		goto fail;
+		goto fail1;
 
 	platform_set_drvdata(pdev, corgi_ts);
 
@@ -281,7 +285,7 @@ static int __init corgits_probe(struct platform_device *pdev)
 
 	if (corgi_ts->irq_gpio < 0) {
 		err = -ENODEV;
-		goto fail;
+		goto fail1;
 	}
 
 	corgi_ts->input = input_dev;
@@ -319,10 +323,12 @@ static int __init corgits_probe(struct platform_device *pdev)
 
 	if (request_irq(corgi_ts->irq_gpio, ts_interrupt, IRQF_DISABLED, "ts", corgi_ts)) {
 		err = -EBUSY;
-		goto fail;
+		goto fail1;
 	}
 
-	input_register_device(corgi_ts->input);
+	err = input_register_device(corgi_ts->input);
+	if (err)
+		goto fail2;
 
 	corgi_ts->power_mode = PWR_MODE_ACTIVE;
 
@@ -331,17 +337,17 @@ static int __init corgits_probe(struct platform_device *pdev)
 
 	return 0;
 
- fail:	input_free_device(input_dev);
+ fail2:	free_irq(corgi_ts->irq_gpio, corgi_ts);
+ fail1:	input_free_device(input_dev);
 	kfree(corgi_ts);
 	return err;
-
 }
 
 static int corgits_remove(struct platform_device *pdev)
 {
 	struct corgi_ts *corgi_ts = platform_get_drvdata(pdev);
 
-	free_irq(corgi_ts->irq_gpio, NULL);
+	free_irq(corgi_ts->irq_gpio, corgi_ts);
 	del_timer_sync(&corgi_ts->timer);
 	corgi_ts->machinfo->put_hsync();
 	input_unregister_device(corgi_ts->input);

drivers/input/touchscreen/gunze.c

@@ -123,7 +123,7 @@ static int gunze_connect(struct serio *serio, struct serio_driver *drv)
 	input_dev = input_allocate_device();
 	if (!gunze || !input_dev) {
 		err = -ENOMEM;
-		goto fail;
+		goto fail1;
 	}
 
 	gunze->serio = serio;
@@ -146,13 +146,17 @@ static int gunze_connect(struct serio *serio, struct serio_driver *drv)
 
 	err = serio_open(serio, drv);
 	if (err)
-		goto fail;
+		goto fail2;
+
+	err = input_register_device(gunze->dev);
+	if (err)
+		goto fail3;
 
-	input_register_device(gunze->dev);
 	return 0;
 
- fail:	serio_set_drvdata(serio, NULL);
-	input_free_device(input_dev);
+ fail3:	serio_close(serio);
+ fail2:	serio_set_drvdata(serio, NULL);
+ fail1:	input_free_device(input_dev);
 	kfree(gunze);
 	return err;
 }

drivers/input/touchscreen/hp680_ts_input.c

@@ -76,38 +76,47 @@ static irqreturn_t hp680_ts_interrupt(int irq, void *dev)
 
 static int __init hp680_ts_init(void)
 {
+	int err;
+
 	hp680_ts_dev = input_allocate_device();
 	if (!hp680_ts_dev)
 		return -ENOMEM;
 
 	hp680_ts_dev->evbit[0] = BIT(EV_ABS) | BIT(EV_KEY);
-	hp680_ts_dev->absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
 	hp680_ts_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
 
-	hp680_ts_dev->absmin[ABS_X] = HP680_TS_ABS_X_MIN;
-	hp680_ts_dev->absmin[ABS_Y] = HP680_TS_ABS_Y_MIN;
-	hp680_ts_dev->absmax[ABS_X] = HP680_TS_ABS_X_MAX;
-	hp680_ts_dev->absmax[ABS_Y] = HP680_TS_ABS_Y_MAX;
+	input_set_abs_params(hp680_ts_dev, ABS_X,
+		HP680_TS_ABS_X_MIN, HP680_TS_ABS_X_MAX, 0, 0);
+	input_set_abs_params(hp680_ts_dev, ABS_Y,
+		HP680_TS_ABS_Y_MIN, HP680_TS_ABS_Y_MAX, 0, 0);
 
 	hp680_ts_dev->name = "HP Jornada touchscreen";
 	hp680_ts_dev->phys = "hp680_ts/input0";
 
-	input_register_device(hp680_ts_dev);
-
 	if (request_irq(HP680_TS_IRQ, hp680_ts_interrupt,
 			IRQF_DISABLED, MODNAME, 0) < 0) {
 		printk(KERN_ERR "hp680_touchscreen.c: Can't allocate irq %d\n",
 		       HP680_TS_IRQ);
-		input_unregister_device(hp680_ts_dev);
-		return -EBUSY;
+		err = -EBUSY;
+		goto fail1;
 	}
 
+	err = input_register_device(hp680_ts_dev);
+	if (err)
+		goto fail2;
+
 	return 0;
+
+ fail2:	free_irq(HP680_TS_IRQ, NULL);
+	cancel_delayed_work(&work);
+	flush_scheduled_work();
+ fail1:	input_free_device(hp680_ts_dev);
+	return err;
 }
 
 static void __exit hp680_ts_exit(void)
 {
-	free_irq(HP680_TS_IRQ, 0);
+	free_irq(HP680_TS_IRQ, NULL);
 	cancel_delayed_work(&work);
 	flush_scheduled_work();
 	input_unregister_device(hp680_ts_dev);

drivers/input/touchscreen/mk712.c

@@ -96,15 +96,13 @@ static irqreturn_t mk712_interrupt(int irq, void *dev_id)
 		goto end;
 	}
 
-	if (~status & MK712_STATUS_TOUCH)
-	{
+	if (~status & MK712_STATUS_TOUCH) {
 		debounce = 1;
 		input_report_key(mk712_dev, BTN_TOUCH, 0);
 		goto end;
 	}
 
-	if (debounce)
-	{
+	if (debounce) {
 		debounce = 0;
 		goto end;
 	}
@@ -113,8 +111,7 @@ static irqreturn_t mk712_interrupt(int irq, void *dev_id)
 	input_report_abs(mk712_dev, ABS_X, last_x);
 	input_report_abs(mk712_dev, ABS_Y, last_y);
 
-end:
-
+ end:
 	last_x = inw(mk712_io + MK712_X) & 0x0fff;
 	last_y = inw(mk712_io + MK712_Y) & 0x0fff;
 	input_sync(mk712_dev);
@@ -169,13 +166,14 @@ static int __init mk712_init(void)
 	    (inw(mk712_io + MK712_STATUS) & 0xf333)) {
 		printk(KERN_WARNING "mk712: device not present\n");
 		err = -ENODEV;
-		goto fail;
+		goto fail1;
 	}
 
-	if (!(mk712_dev = input_allocate_device())) {
+	mk712_dev = input_allocate_device();
+	if (!mk712_dev) {
 		printk(KERN_ERR "mk712: not enough memory\n");
 		err = -ENOMEM;
-		goto fail;
+		goto fail1;
 	}
 
 	mk712_dev->name = "ICS MicroClock MK712 TouchScreen";
@@ -196,13 +194,17 @@ static int __init mk712_init(void)
 	if (request_irq(mk712_irq, mk712_interrupt, 0, "mk712", mk712_dev)) {
 		printk(KERN_WARNING "mk712: unable to get IRQ\n");
 		err = -EBUSY;
-		goto fail;
+		goto fail1;
 	}
 
-	input_register_device(mk712_dev);
+	err = input_register_device(mk712_dev);
+	if (err)
+		goto fail2;
+
 	return 0;
 
- fail:	input_free_device(mk712_dev);
+ fail2:	free_irq(mk712_irq, mk712_dev);
+ fail1:	input_free_device(mk712_dev);
 	release_region(mk712_io, 8);
 	return err;
 }

drivers/input/touchscreen/mtouch.c

@@ -137,7 +137,7 @@ static int mtouch_connect(struct serio *serio, struct serio_driver *drv)
 	input_dev = input_allocate_device();
 	if (!mtouch || !input_dev) {
 		err = -ENOMEM;
-		goto fail;
+		goto fail1;
 	}
 
 	mtouch->serio = serio;
@@ -160,14 +160,17 @@ static int mtouch_connect(struct serio *serio, struct serio_driver *drv)
 
 	err = serio_open(serio, drv);
 	if (err)
-		goto fail;
+		goto fail2;
 
-	input_register_device(mtouch->dev);
+	err = input_register_device(mtouch->dev);
+	if (err)
+		goto fail3;
 
 	return 0;
 
- fail:	serio_set_drvdata(serio, NULL);
-	input_free_device(input_dev);
+ fail3:	serio_close(serio);
+ fail2:	serio_set_drvdata(serio, NULL);
+ fail1:	input_free_device(input_dev);
 	kfree(mtouch);
 	return err;
 }