Hi Alan,

FYI, kernel build failed on

tree:   git://people.freedesktop.org/~airlied/linux.git drm-next
head:   f76c0dde78fbe021801fe904fb5999f3154d4e5d
commit: f76c0dde78fbe021801fe904fb5999f3154d4e5d [11/11] gma500/cdv: Fix call to cdv_intel_dp_set_m_n
config: x86_64-randconfig-s159 (attached as .config)

All related error/warning messages:

drivers/gpu/drm/gma500/cdv_intel_display.c: In function 'cdv_intel_crtc_mode_set':
drivers/gpu/drm/gma500/cdv_intel_display.c:1131:3: error: implicit declaration of function 'cdv_intel_dp_set_m_n' [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors

vim +1131 drivers/gpu/drm/gma500/cdv_intel_display.c
  1128	/*		dpll |= PLL_REF_INPUT_DREFCLK; */
  1129	
  1130		if (is_dp || is_edp) {
> 1131			cdv_intel_dp_set_m_n(crtc, mode, adjusted_mode);
  1132		} else {
  1133			REG_WRITE(PIPE_GMCH_DATA_M(pipe), 0);
  1134			REG_WRITE(PIPE_GMCH_DATA_N(pipe), 0);

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0-DAY kernel build testing backend         Open Source Technology Centre
Fengguang Wu <wfg@linux.intel.com>                     Intel Corporation