Input: ili210x - add missing negation for touch indication on ili210x

commit ac05a8a927e5a1027592d8f98510a511dadeed14 upstream.

This adds the negation needed for proper finger detection on Ilitek
ili2107/ili210x. This fixes polling issues (on Amazon Kindle Fire)
caused by returning false for the cooresponding finger on the touchscreen.

Signed-off-by: Hansem Ro <hansemro@outlook.com>
Fixes: e3559442afd2a ("ili210x - rework the touchscreen sample processing")
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/input/touchscreen/ili210x.c b/drivers/input/touchscreen/ili210x.c
index f4ebdab06280670d5c55819bb7efa9497f69c0d3..22839dde1d09f0ced638cf3f873a2b5eb4fcabff 100644 (file)
--- a/drivers/input/touchscreen/ili210x.c
+++ b/drivers/input/touchscreen/ili210x.c
@@ -109,7 +109,7 @@ static bool ili210x_touchdata_to_coords(struct ili210x *priv, u8 *touchdata,
        if (finger >= ILI210X_TOUCHES)
                return false;
 
-       if (touchdata[0] & BIT(finger))
+       if (!(touchdata[0] & BIT(finger)))
                return false;
 
        *x = get_unaligned_be16(touchdata + 1 + (finger * 4) + 0);