From: Ville Syrjälä Date: Tue, 8 Dec 2015 17:59:43 +0000 (+0200) Subject: drm/i915: Reject >9 ddi translation entried if port != A/E on SKL X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=10afa0b65fe21cac67e8b19e8b98bde39befc525;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git drm/i915: Reject >9 ddi translation entried if port != A/E on SKL Only DDI A and E support 10 translation entries in DP mode. For the other ports the tenth entry is reserved for HDMI. Signed-off-by: Ville Syrjälä Link: http://patchwork.freedesktop.org/patch/msgid/1449597590-6971-9-git-send-email-ville.syrjala@linux.intel.com Reviewed-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index c47146473471..3edb10a4f0b4 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -435,6 +435,10 @@ static void intel_prepare_ddi_buffers(struct drm_i915_private *dev_priv, if (dev_priv->vbt.ddi_port_info[port].hdmi_boost_level || dev_priv->vbt.ddi_port_info[port].dp_boost_level) iboost_bit = 1<<31; + + if (WARN_ON(port != PORT_A && + port != PORT_E && n_edp_entries > 9)) + n_edp_entries = 9; } else if (IS_BROADWELL(dev_priv)) { ddi_translations_fdi = bdw_ddi_translations_fdi; ddi_translations_dp = bdw_ddi_translations_dp; @@ -2084,6 +2088,11 @@ static void skl_ddi_set_iboost(struct drm_i915_private *dev_priv, iboost = dp_iboost; } else { ddi_translations = skl_get_buf_trans_edp(dev_priv, &n_entries); + + if (WARN_ON(port != PORT_A && + port != PORT_E && n_entries > 9)) + n_entries = 9; + iboost = ddi_translations[level].i_boost; } } else if (type == INTEL_OUTPUT_HDMI) {