Input: atmel_mxt_ts - downgrade warning about empty interrupts

In the case where the CHG/interrupt line mode is not configured correctly,
this warning is output to dmesg output for each interrupt. Downgrade the
message to debug.

Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index db178ed2b47ee282c27a5f424f45df168b99a091..d954b81243fe50dfe8ec7c455d567ec9b6a90535 100644 (file)
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -837,7 +837,12 @@ static irqreturn_t mxt_process_messages_t44(struct mxt_data *data)
        count = data->msg_buf[0];
 
        if (count == 0) {
-               dev_warn(dev, "Interrupt triggered but zero messages\n");
+               /*
+                * This condition is caused by the CHG line being configured
+                * in Mode 0. It results in unnecessary I2C operations but it
+                * is benign.
+                */
+               dev_dbg(dev, "Interrupt triggered but zero messages\n");
                return IRQ_NONE;
        } else if (count > data->max_reportid) {
                dev_err(dev, "T44 count %d exceeded max report id\n", count);