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| author |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2019-08-29 16:55:26 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2019-09-05 17:56:32 -0700 |
| commit | 4370b231d1001e0b560f82fd93616c7e54bd5fda (patch) | |
| tree | ed0309fff54af1545630a32dfff981b36c5758d7 /drivers/input/input.c | |
| parent | Input: bu21013_ts - switch to using standard touchscreen properties (diff) | |
| download | linux-dev-4370b231d1001e0b560f82fd93616c7e54bd5fda.tar.xz linux-dev-4370b231d1001e0b560f82fd93616c7e54bd5fda.zip | |
Input: reset device timestamp on sync
We need to reset input device's timestamp on input_sync(), otherwise
drivers not using input_set_timestamp() will end up with a stale
timestamp after their clients consume first input event.
Fixes: 3b51c44bd693 ("Input: allow drivers specify timestamp for input events")
Reported-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/input.c')
| -rw-r--r-- | drivers/input/input.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c index c08aa3596144..55086279d044 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -397,6 +397,13 @@ static void input_handle_event(struct input_dev *dev, if (dev->num_vals >= 2) input_pass_values(dev, dev->vals, dev->num_vals); dev->num_vals = 0; + /* + * Reset the timestamp on flush so we won't end up + * with a stale one. Note we only need to reset the + * monolithic one as we use its presence when deciding + * whether to generate a synthetic timestamp. + */ + dev->timestamp[INPUT_CLK_MONO] = ktime_set(0, 0); } else if (dev->num_vals >= dev->max_vals - 2) { dev->vals[dev->num_vals++] = input_value_sync; input_pass_values(dev, dev->vals, dev->num_vals); |