Input: touchscreens - handle errors when registering input devices

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

5 files changed, 68 insertions, 44 deletions

diff --git a/drivers/input/touchscreen/corgi_ts.c b/drivers/input/touchscreen/corgi_ts.c
index 66121f6a89..e294558282 100644
--- a/drivers/input/touchscreen/corgi_ts.c
+++ b/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);
diff --git a/drivers/input/touchscreen/gunze.c b/drivers/input/touchscreen/gunze.c
index 817c219893..44f397fff7 100644
--- a/drivers/input/touchscreen/gunze.c
+++ b/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;
 }
diff --git a/drivers/input/touchscreen/hp680_ts_input.c b/drivers/input/touchscreen/hp680_ts_input.c
index 58fca31678..2490874727 100644
--- a/drivers/input/touchscreen/hp680_ts_input.c
+++ b/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);
diff --git a/drivers/input/touchscreen/mk712.c b/drivers/input/touchscreen/mk712.c
index 4cbcaa6a71..44140feeff 100644
--- a/drivers/input/touchscreen/mk712.c
+++ b/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;
 }
diff --git a/drivers/input/touchscreen/mtouch.c b/drivers/input/touchscreen/mtouch.c
index 3b4c61664b..c66b399774 100644
--- a/drivers/input/touchscreen/mtouch.c
+++ b/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;
 }