drm/i915/icl: Don't warn on spurious interrupts
authorMika Kuoppala <mika.kuoppala@linux.intel.com>
Wed, 10 Apr 2019 13:21:24 +0000 (16:21 +0300)
committerChris Wilson <chris@chris-wilson.co.uk>
Wed, 10 Apr 2019 15:23:19 +0000 (16:23 +0100)
commit8455dad7ba8ca846ebc4d03c2ca905c12fc6a455
tree31839628012f3e0e1af64489ef8a654aee14c6da
parenta087bafeeac7ef317b1e44c615e162129c9c0ee2
drm/i915/icl: Don't warn on spurious interrupts

There is a chance we can see spurious interrupts in live
now. We have more engines enabled and that with more elaborate
access patterns with pm and display, increases the chances
hardware just makes a social call, without anything to work on.

Remove the error as we have tests to actually probe if
we really miss interrupt, instead of getting spurious ones.

Note that now we do write to intr_dw even with a zero
value. This is considered advantegous as the write
is an ack that sw is done.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190410132124.21795-2-mika.kuoppala@linux.intel.com
drivers/gpu/drm/i915/i915_irq.c