Hi Nitin, ...
> diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c > b/drivers/gpu/drm/i915/gt/intel_ring_submission.c > index 32f3b52a183a..d56410863f26 100644 > --- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c > +++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c > @@ -230,8 +230,13 @@ static int xcs_resume(struct intel_engine_cs *engine) > > set_pp_dir(engine); > > - /* First wake the ring up to an empty/idle ring */ > - for ((kt) = ktime_get() + (2 * NSEC_PER_MSEC); > + /* > + * First wake the ring up to an empty/idle ring. > + * Use 50ms of delay to let the engine write successfully > + * for all platforms. Experimented with different values and I'm going to change /Experimented/Experiments/ Reviewed-by: Andi Shyti <[email protected]> Thanks, Andi > + * determined that 50ms works best based on testing. > + */ > + for ((kt) = ktime_get() + (50 * NSEC_PER_MSEC); > ktime_before(ktime_get(), (kt)); cpu_relax()) { > /* > * In case of resets fails because engine resumes from > -- > 2.25.1
