drm/i915: undefined symbol I915_SW_FENCE_CHECK_DAG

From	Valentin Rothberg <valentinrothberg@gmail.com>
Newsgroups	linux.kernel
Subject	drm/i915: undefined symbol I915_SW_FENCE_CHECK_DAG
Date	2016-09-12 08:50 +0200
Message-ID	<sgte2-8bG-5@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Hi Chris,

your commit e68a139f6bf3 ("drm/i915: Add a sw fence for collecting up
dma fences") has shown up in today's linux-next (i.e., 20160912)
adding the following the lines (184++):

+       if (!IS_ENABLED(CONFIG_I915_SW_FENCE_CHECK_DAG))
+               return false;

The Kconfig symbol isn't defined anywhere, so the function will always
return false.  I could not find a patch on LKML adding the symbol.  Is
there a patch queued somewhere or is the yet unconditional return
intentional?

I found the issue by diffing the last and today's linux-next using
scripts/checkkconfigsymbols.py.

Kind regards,
 Valentin

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drm/i915: undefined symbol I915_SW_FENCE_CHECK_DAG Valentin Rothberg <valentinrothberg@gmail.com> - 2016-09-12 08:50 +0200
  Re: drm/i915: undefined symbol I915_SW_FENCE_CHECK_DAG Chris Wilson <chris@chris-wilson.co.uk> - 2016-09-12 09:00 +0200

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