linux-next: build failure after merge of the tip tree (from the drm-intel tree)

[Stephen Rothwell]

Hi all,

After merging the tip tree, today's linux-next build (x86_64 allmodconfig)
failed like this:

In file included from include/uapi/linux/stddef.h:1:0,
                 from include/linux/stddef.h:4,
                 from include/uapi/linux/posix_types.h:4,
                 from include/uapi/linux/types.h:13,
                 from include/linux/types.h:5,
                 from include/linux/sysrq.h:18,
                 from drivers/gpu/drm/i915/i915_irq.c:31:
drivers/gpu/drm/i915/i915_irq.c: In function 'i915_hangcheck_elapsed':
include/linux/compiler.h:542:50: error: incompatible types when initializing 
type 'const void * const' using type 'bool {aka _Bool}'
  __maybe_unused const void * const _________p2 = _________p1; \
                                                  ^
drivers/gpu/drm/i915/i915_irq.c:3098:7: note: in expansion of macro 
'lockless_dereference'
  if (!lockless_dereference(dev_priv->gt.awake))
       ^

Caused by commit

  67d97da34917 ("drm/i915: Only start retire worker when idle")

from the drm-intel tree interacting with commit

  331b6d8c7afc ("locking/barriers: Validate lockless_dereference() is used on a 
pointer type")

from the tip tree.