[Intel-gfx] [PATCH v4] drm/i915/tracing: Enable user interrupts while intel_engine_notify is active

[kbuild test robot]

Hi Tvrtko,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm-intel/for-linux-next]
[also build test WARNING on next-20180810]
[cannot apply to v4.18-rc8]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Tvrtko-Ursulin/drm-i915-tracing-Enable-user-interrupts-while-intel_engine_notify-is-active/20180812-054420
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-randconfig-x077-201832 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   In file included from drivers/gpu/drm/i915/selftests/../i915_trace.h:11:0,
                    from drivers/gpu/drm/i915/selftests/../i915_drv.h:2669,
                    from drivers/gpu/drm/i915/selftests/i915_selftest.c:26:
   drivers/gpu/drm/i915/selftests/../i915_tracing.h: In function 'intel_engine_notify_tracepoint_register':
>> drivers/gpu/drm/i915/selftests/../i915_tracing.h:25:1: warning: no return statement in function returning non-void [-Wreturn-type]
    static inline int intel_engine_notify_tracepoint_register(void) { }
    ^~~~~~

vim +25 drivers/gpu/drm/i915/selftests/../i915_tracing.h

    24	
  > 25	static inline int intel_engine_notify_tracepoint_register(void) { }
    26	static inline void intel_engine_notify_tracepoint_unregister(void) { }
    27	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
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