linux-kernel - Re: [PATCH v3 3/8] drm/fb_helper: Introduce hotplug

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Date:   Wed, 1 Aug 2018 16:36:36 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Lyude Paul <lyude@...hat.com>
Cc:     kbuild-all@...org, nouveau@...ts.freedesktop.org,
        David Airlie <airlied@...ux.ie>,
        Karol Herbst <karolherbst@...il.com>, stable@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v3 3/8] drm/fb_helper: Introduce hotplug_suspend/resume()

Hi Lyude,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v4.18-rc7]
[cannot apply to next-20180731]
[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/Lyude-Paul/Fix-connector-probing-deadlocks-from-RPM-bugs/20180801-153816
config: x86_64-randconfig-x014-201830 (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=x86_64 

All warnings (new ones prefixed by >>):

   In file included from drivers/gpu//drm/drm_crtc_helper.c:42:0:
   include/drm/drm_fb_helper.h: In function 'drm_fb_helper_suspend_hotplug':
>> include/drm/drm_fb_helper.h:586:1: warning: no return statement in function returning non-void [-Wreturn-type]
    }
    ^

vim +586 include/drm/drm_fb_helper.h

   578	
   579	static inline void
   580	drm_fb_helper_resume_hotplug(struct drm_fb_helper *fb_helper)
   581	{
   582	}
   583	static inline bool
   584	drm_fb_helper_suspend_hotplug(struct drm_fb_helper *fb_helper)
   585	{
 > 586	}
   587	#endif
   588	

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