[Intel-gfx] [PATCH] drm/i915: prevent crash with .disable_display parameter

[kbuild test robot]

Hi Clint,

[auto build test ERROR on drm-intel/for-linux-next]
[also build test ERROR on v4.10-rc4 next-20170118]
[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/clinton-a-taylor-intel-com/drm-i915-prevent-crash-with-disable_display-parameter/20170118-230141
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-randconfig-x005-201703 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

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

   In file included from include/linux/ioport.h:12:0,
                    from include/linux/acpi.h:25,
                    from drivers/gpu/drm/i915/i915_drv.c:30:
   drivers/gpu/drm/i915/i915_drv.c: In function 'i915_driver_register':
>> drivers/gpu/drm/i915/i915_drv.c:1143:14: error: 'struct drm_i915_private' has no member named 'fbdev'
     if (dev_priv->fbdev) {
                 ^
   include/linux/compiler.h:149:30: note: in definition of macro '__trace_if'
     if (__builtin_constant_p(!!(cond)) ? !!(cond) :   \
                                 ^~~~
>> drivers/gpu/drm/i915/i915_drv.c:1143:2: note: in expansion of macro 'if'
     if (dev_priv->fbdev) {
     ^~
>> drivers/gpu/drm/i915/i915_drv.c:1143:14: error: 'struct drm_i915_private' has no member named 'fbdev'
     if (dev_priv->fbdev) {
                 ^
   include/linux/compiler.h:149:42: note: in definition of macro '__trace_if'
     if (__builtin_constant_p(!!(cond)) ? !!(cond) :   \
                                             ^~~~
>> drivers/gpu/drm/i915/i915_drv.c:1143:2: note: in expansion of macro 'if'
     if (dev_priv->fbdev) {
     ^~
>> drivers/gpu/drm/i915/i915_drv.c:1143:14: error: 'struct drm_i915_private' has no member named 'fbdev'
     if (dev_priv->fbdev) {
                 ^
   include/linux/compiler.h:160:16: note: in definition of macro '__trace_if'
      ______r = !!(cond);     \
                   ^~~~
>> drivers/gpu/drm/i915/i915_drv.c:1143:2: note: in expansion of macro 'if'
     if (dev_priv->fbdev) {
     ^~

vim +1143 drivers/gpu/drm/i915/i915_drv.c

  1137		 * Some ports require correctly set-up hpd registers for detection to
  1138		 * work properly (leading to ghost connected connector status), e.g. VGA
  1139		 * on gm45.  Hence we can only set up the initial fbdev config after hpd
  1140		 * irqs are fully enabled. We do it last so that the async config
  1141		 * cannot run before the connectors are registered.
  1142		 */
> 1143		if (dev_priv->fbdev) {
  1144			intel_fbdev_initial_config_async(dev);
  1145		}
  1146	}

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