Quoting Chris Wilson (2018-04-17 20:06:38)
> The old wait_on_atomic_t used a custom callback to perform the
> schedule(), which used my return semantics of reporting an error code on
> timeout. wait_var_event_timeout() uses the schedule() return semantics
> of reporting the remaining jiffies (1 if it timed out with 0 jiffies
> remaining!) and 0 on failure. This semantic mismatch lead to us falsely
> claiming a time out occurred.
> 
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106085
> Fixes: d224985a5e31 ("sched/wait, drivers/drm: Convert wait_on_atomic_t() 
> usage to the new wait_var_event() API")
> Signed-off-by: Chris Wilson <[email protected]>

Reviewed-by: Joonas Lahtinen <[email protected]>

Regards, Joonas
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