Input: iqs7222 - avoid enabling unused interrupts

commit c9ddc41cdd522f2db5d492eda3df8994d928be34 upstream.

If a proximity event node is defined so as to specify the wake-up
properties of the touch surface, the proximity event interrupt is
enabled unconditionally. This may result in unwanted interrupts.

Solve this problem by enabling the interrupt only if the event is
mapped to a key or switch code.

Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Link: https://lore.kernel.org/r/aKJxxgEWpNaNcUaW@nixie71
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/misc/iqs7222.c b/drivers/input/misc/iqs7222.c
index f24b174c7266718c84be939dce41b07d878c0a96..1a799bffa5e1d8afda8bf9c16d009074439623d7 100644 (file)
--- a/drivers/input/misc/iqs7222.c
+++ b/drivers/input/misc/iqs7222.c
@@ -2038,6 +2038,9 @@ static int iqs7222_parse_chan(struct iqs7222_private *iqs7222,
                if (error)
                        return error;
 
+               if (!iqs7222->kp_type[chan_index][i])
+                       continue;
+
                if (!dev_desc->event_offset)
                        continue;