Symbol: FB_CVT_MIN_VSYNC_BP
drivers/video/fbdev/core/fbcvt.c
148
vbi_lines = (FB_CVT_MIN_VSYNC_BP * 1000)/cvt->hperiod + 1 +
drivers/video/fbdev/core/fbcvt.c
82
num -= FB_CVT_MIN_VSYNC_BP * 1000;