Input: kbtab - do not advertise unsupported events

The device does not emit EV_MSC/MSC_SERIAL nor EV_KEY/BTN_MIDDLE events
so it should not mark them as supported in capabilities bitmaps. This
still leaves BTN_TOOL_PEN and BTN_TOUCH events being processed in a funky
manner.

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

1 files changed, 15 insertions, 24 deletions

diff --git a/drivers/input/tablet/kbtab.c b/drivers/input/tablet/kbtab.c
index 3f7d1254b8ed..b9969f120247 100644
--- a/drivers/input/tablet/kbtab.c
+++ b/drivers/input/tablet/kbtab.c
@@ -34,10 +34,6 @@ struct kbtab {
         struct input_dev *dev;
         struct usb_device *usbdev;
         struct urb *irq;
-        int x, y;
-        int button;
-        int pressure;
-        __u32 serial[2];
         char phys[32];
 };
 
@@ -46,6 +42,7 @@ static void kbtab_irq(struct urb *urb)
         struct kbtab *kbtab = urb->context;
         unsigned char *data = kbtab->data;
         struct input_dev *dev = kbtab->dev;
+        int pressure;
         int retval;
 
         switch (urb->status) {
@@ -63,31 +60,27 @@ static void kbtab_irq(struct urb *urb)
                 goto exit;
         }
 
-        kbtab->x = get_unaligned_le16(&data[1]);
-        kbtab->y = get_unaligned_le16(&data[3]);
-
-        kbtab->pressure = (data[5]);
 
         input_report_key(dev, BTN_TOOL_PEN, 1);
 
-        input_report_abs(dev, ABS_X, kbtab->x);
-        input_report_abs(dev, ABS_Y, kbtab->y);
+        input_report_abs(dev, ABS_X, get_unaligned_le16(&data[1]));
+        input_report_abs(dev, ABS_Y, get_unaligned_le16(&data[3]));
 
         /*input_report_key(dev, BTN_TOUCH , data[0] & 0x01);*/
         input_report_key(dev, BTN_RIGHT, data[0] & 0x02);
 
-        if (-1 == kb_pressure_click) {
-                input_report_abs(dev, ABS_PRESSURE, kbtab->pressure);
-        } else {
-                input_report_key(dev, BTN_LEFT, (kbtab->pressure > kb_pressure_click) ? 1 : 0);
-        };
+        pressure = data[5];
+        if (kb_pressure_click == -1)
+                input_report_abs(dev, ABS_PRESSURE, pressure);
+        else
+                input_report_key(dev, BTN_LEFT, pressure > kb_pressure_click ? 1 : 0);
 
         input_sync(dev);
 
  exit:
-        retval = usb_submit_urb (urb, GFP_ATOMIC);
+        retval = usb_submit_urb(urb, GFP_ATOMIC);
         if (retval)
-                err ("%s - usb_submit_urb failed with result %d",
+                err("%s - usb_submit_urb failed with result %d",
                      __func__, retval);
 }
 
@@ -153,13 +146,11 @@ static int kbtab_probe(struct usb_interface *intf, const struct usb_device_id *i
         input_dev->open = kbtab_open;
         input_dev->close = kbtab_close;
 
-        input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) |
-                BIT_MASK(EV_MSC);
-        input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_LEFT) |
-                BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE);
-        input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_PEN) |
-                BIT_MASK(BTN_TOUCH);
-        input_dev->mscbit[0] |= BIT_MASK(MSC_SERIAL);
+        input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+        input_dev->keybit[BIT_WORD(BTN_LEFT)] |=
+                BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
+        input_dev->keybit[BIT_WORD(BTN_DIGI)] |=
+                BIT_MASK(BTN_TOOL_PEN) | BIT_MASK(BTN_TOUCH);
         input_set_abs_params(input_dev, ABS_X, 0, 0x2000, 4, 0);
         input_set_abs_params(input_dev, ABS_Y, 0, 0x1750, 4, 0);
         input_set_abs_params(input_dev, ABS_PRESSURE, 0, 0xff, 0, 0);