[Intel-gfx] [PATCH] drm/i915/display: Return correct err code for bpc < 0

[Manasi Navare]

In the function intel_dp_max_bpp(), currently if bpc < 0 in case of error,
we return 0 instead of returning an err code of -EINVAL.
This throws off the logic in the calling function. Fix this by returning
-EINVAL in case bpc < 0 which would be an error.

Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Cc: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
Cc: Sean Paul <sean at poorly.run>
Signed-off-by: Manasi Navare <navaremanasi at chromium.org>
---
 drivers/gpu/drm/i915/display/intel_dp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index f0bace9d98a1..f6546292e7c6 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -1280,7 +1280,7 @@ static int intel_dp_max_bpp(struct intel_dp *intel_dp,
 		max_hdmi_bpc = intel_dp_hdmi_compute_bpc(intel_dp, crtc_state, bpc,
 							 respect_downstream_limits);
 		if (max_hdmi_bpc < 0)
-			return 0;
+			return -EINVAL;
 
 		bpc = min(bpc, max_hdmi_bpc);
 	}
-- 
2.40.0.577.gac1e443424-goog