[Intel-gfx] [bug report] drm/i915/gvt: Update MMIO handle policy to compatible KBL platform.

[Dan Carpenter]

Hello Xu Han,

The patch 5cf5fe8f729b: "drm/i915/gvt: Update MMIO handle policy to
compatible KBL platform." from Mar 29, 2017, leads to the following
static checker warning:

	drivers/gpu/drm/i915/gvt/handlers.c:2855 init_skl_mmio_info()
	'0x6 | 0x4' has '0x4' set on both sides

drivers/gpu/drm/i915/gvt/handlers.c
  2848          MMIO_D(0x44500, D_SKL_PLUS);
  2849          MMIO_DFH(GEN9_CSFE_CHICKEN1_RCS, D_SKL_PLUS, F_CMD_ACCESS, NULL, NULL);
  2850          MMIO_DFH(GEN8_HDC_CHICKEN1, D_SKL | D_KBL, F_MODE_MASK | F_CMD_ACCESS,
  2851                  NULL, NULL);
  2852  
  2853          MMIO_D(0x4ab8, D_KBL);
  2854          MMIO_D(0x940c, D_SKL_PLUS);
  2855          MMIO_D(0x2248, D_SKL_PLUS | D_KBL);

D_SKL_PLUS is the same as D_SKL | D_KBL so the D_KBL is redundant.  Also
why don't we just use D_SKL_PLUS on the lines below as well?

  2856          MMIO_D(0x4ab0, D_SKL | D_KBL);
  2857          MMIO_D(0x20d4, D_SKL | D_KBL);
  2858  
  2859          return 0;
  2860  }

regards,
dan carpenter