Re: [PATCH] drm/i915: Protect fbdev across slow or failed initialisation

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Hi Chris,

[auto build test ERROR on drm-intel/for-linux-next]
[cannot apply to v4.6-rc1 next-20160330]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Chris-Wilson/drm-i915-Protect-fbdev-across-slow-or-failed-initialisation/20160331-015912
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: x86_64-randconfig-x012-03310059 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All error/warnings (new ones prefixed by >>):

   drivers/gpu/drm/i915/intel_fbdev.c: In function 'intel_fbdev_get_if_active':
>> drivers/gpu/drm/i915/intel_fbdev.c:119:37: warning: initialization from incompatible pointer type [-Wincompatible-pointer-types]
     struct drm_i915_device *dev_priv = to_i915(dev);
                                        ^
>> drivers/gpu/drm/i915/intel_fbdev.c:122:14: error: dereferencing pointer to incomplete type 'struct drm_i915_device'
     if (dev_priv->fbdev == NULL)
                 ^
>> drivers/gpu/drm/i915/intel_fbdev.c:125:9: error: 'ifbdev' undeclared (first use in this function)
     info = ifbdev->helper.fbdev;
            ^
   drivers/gpu/drm/i915/intel_fbdev.c:125:9: note: each undeclared identifier is reported only once for each function it appears in
>> drivers/gpu/drm/i915/intel_fbdev.c:133:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^

vim +122 drivers/gpu/drm/i915/intel_fbdev.c

   113		.fb_debug_enter = drm_fb_helper_debug_enter,
   114		.fb_debug_leave = drm_fb_helper_debug_leave,
   115	};
   116	
   117	static struct intel_fbdev *intel_fbdev_get_if_active(struct drm_device *dev)
   118	{
 > 119		struct drm_i915_device *dev_priv = to_i915(dev);
   120		struct fb_info *info;
   121	
 > 122		if (dev_priv->fbdev == NULL)
   123			return NULL;
   124	
 > 125		info = ifbdev->helper.fbdev;
   126		if (info->screen_base == NULL)
   127			return NULL;
   128	
   129		if (info->state != FBINFO_STATE_RUNNING)
   130			return NULL;
   131	
   132		return dev_priv->fbdev;
 > 133	}
   134	
   135	static int intelfb_alloc(struct drm_fb_helper *helper,
   136				 struct drm_fb_helper_surface_size *sizes)

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

Attachment: .config.gz
Description: Binary data

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