Allow driver to initialize only input_dev->rep[REP_DELAY] and
input_dev->rep[REP_PERIOD], but then use the input timer and
repeat function from input.c.

For example, a HID driver could do:

static void xyz_input_configured(struct hid_device *hid,
                                 struct hid_input *hidinput)
{
        hidinput->input->rep[REP_DELAY] = 400;
        hidinput->input->rep[REP_PERIOD] = 100;
}

static struct hid_driver xyz_driver = {
        .input_configured = xyz_input_configured,
}

Signed-off-by: Petri Gynther <pgynt...@google.com>
---
 drivers/input/input.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/input/input.c b/drivers/input/input.c
index 5391abd..1984ba5 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -2115,6 +2115,15 @@ int input_register_device(struct input_dev *dev)
                dev->rep[REP_PERIOD] = 33;
        }
 
+       /*
+        * If the driver didn't initialize the timer data and function, then
+        * handle the autorepeating here in input.c.
+        */
+       if (!dev->timer.data && !dev->timer.function) {
+               dev->timer.data = (unsigned long) dev;
+               dev->timer.function = input_repeat_key;
+       }
+
        if (!dev->getkeycode)
                dev->getkeycode = input_default_getkeycode;
 
-- 
2.6.0.rc2.230.g3dd15c0

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