Input: silead - disable interrupt during suspend

When we put the touchscreen controller in low-power mode the irq
pin may trigger (float) and if we then try to read a data packet we
get the following error in dmesg:

[  478.801017] silead_ts i2c-MSSL1680:00: Data read error -121

This commit disables the irq during suspend/resume fixing this error.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/touchscreen/silead.c b/drivers/input/touchscreen/silead.c
index 813dd68a5c82478f4636652fe6e5dec05ec1fd37..0dbcf105f7db348773592f54d4b85beb9b7ba4a3 100644 (file)
--- a/drivers/input/touchscreen/silead.c
+++ b/drivers/input/touchscreen/silead.c
@@ -526,6 +526,7 @@ static int __maybe_unused silead_ts_suspend(struct device *dev)
 {
        struct i2c_client *client = to_i2c_client(dev);
 
+       disable_irq(client->irq);
        silead_ts_set_power(client, SILEAD_POWER_OFF);
        return 0;
 }
@@ -551,6 +552,8 @@ static int __maybe_unused silead_ts_resume(struct device *dev)
                return -ENODEV;
        }
 
+       enable_irq(client->irq);
+
        return 0;
 }