drm/i915: fix the incorrect condition judgement in dp_is_present_in_vbt

We were always looking for the PORT_IDPB entry.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index a86af0d..e0e835e 100644 (file)
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1247,11 +1247,11 @@ int dp_is_present_in_vbt(struct drm_device *dev, int dp_reg)
                return 1;
 
        dp_port = 0;
-       if (dp_reg == DP_B || PCH_DP_B)
+       if (dp_reg == DP_B || dp_reg == PCH_DP_B)
                dp_port = PORT_IDPB;
-       else if (dp_reg == DP_C || PCH_DP_C)
+       else if (dp_reg == DP_C || dp_reg == PCH_DP_C)
                dp_port = PORT_IDPC;
-       else if (dp_reg == DP_D || PCH_DP_D)
+       else if (dp_reg == DP_D || dp_reg == PCH_DP_D)
                dp_port = PORT_IDPD;
 
        ret = 0;