[igt-dev] [PATCH i-g-t] tests/kms_async_flips: Fix flip timestamp checks

[Juha-Pekka Heikkila]

Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila at gmail.com>

On 28.4.2021 1.25, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> Check the flip timestamp from the event (not the time we got the
> event) against the vblank timestamps. Also if things are going
> well we should expect the flip timestamp to in fact match the
> first vblank timestamp, so allow them to be equal.
> 
> Cc: Karthik B S <karthik.b.s at intel.com>
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> ---
>   tests/kms_async_flips.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/tests/kms_async_flips.c b/tests/kms_async_flips.c
> index e397a54b874f..a60eab688024 100644
> --- a/tests/kms_async_flips.c
> +++ b/tests/kms_async_flips.c
> @@ -89,7 +89,7 @@ static void flip_handler(int fd_, unsigned int sequence, unsigned int tv_sec,
>   
>   	last_ms = cur_ms;
>   
> -	data->flip_timestamp_us = ts.tv_sec * 1000000 + ts.tv_nsec / 1000;
> +	data->flip_timestamp_us = tv_sec * 1000000l + tv_usec;
>   }
>   
>   static void wait_flip_event(data_t *data)
> @@ -282,7 +282,7 @@ static void test_timestamp(data_t *data)
>   	igt_info("vbl1_timestamp = %ldus\nflip_timestamp = %ldus\nvbl2_timestamp = %ldus\n",
>   		 vbl_time, data->flip_timestamp_us, vbl_time1);
>   
> -	igt_assert_f(vbl_time < data->flip_timestamp_us && vbl_time1 > data->flip_timestamp_us,
> +	igt_assert_f(vbl_time <= data->flip_timestamp_us && vbl_time1 > data->flip_timestamp_us,
>   		     "Async flip time stamp is expected to be in between 2 vblank time stamps\n");
>   }
>   
>