[Bug 78274] [BDW Bisected]BUG: unable to handle kernel paging request at ffffc900110a0000

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78274

lu hua <huax.lu at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |ASSIGNED

--- Comment #9 from lu hua <huax.lu at intel.com> ---
(In reply to comment #8)
> diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c
> b/drivers/gpu/drm/i915/intel_ringbuffer.c
> index 40a7aa4..62fd8a6 100644
> --- a/drivers/gpu/drm/i915/intel_ringbuffer.c
> +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
> @@ -717,6 +717,9 @@ gen6_add_request(struct intel_ring_buffer *ring)
>  {
>         int ret;
>  
> +       if (!i915_semaphore_is_enabled(ring->dev))
> +               return 0;
> +
>         ret = ring->semaphore.signal(ring, 4);
>         if (ret)
>                 return ret;

make fail

drivers/gpu/drm/i915/intel_ringbuffer.c: In function ‘gen6_add_request’:
drivers/gpu/drm/i915/intel_ringbuffer.c:725:33: error: ‘dev’ undeclared
(first use in this function)
drivers/gpu/drm/i915/intel_ringbuffer.c:725:33: note: each undeclared
identifier is reported only once for each function it appears in
make[4]: *** [drivers/gpu/drm/i915/intel_ringbuffer.o] Error 1
make[3]: *** [drivers/gpu/drm/i915] Error 2
make[2]: *** [drivers/gpu/drm] Error 2
make[1]: *** [drivers/gpu] Error 2
make: *** [drivers] Error 2

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