commit dfd09dd9a10caa035a906fda0b3b3872171544bf
Author: Po-Hsien Wang <pwang@chromium.org>
Date:   Tue Oct 31 21:06:51 2017 -0700

    arc-mesa: Disable suuport for GLES > 3.1
    
    Disable support for GLES version > 3.1
    
    Change-Id: If911f071e193e52e88d288805d0dd94a8e0e1e2f

diff --git a/src/egl/main/eglcontext.c b/src/egl/main/eglcontext.c
index 1a8e9bda1a..88dee6c3e7 100644
--- a/src/egl/main/eglcontext.c
+++ b/src/egl/main/eglcontext.c
@@ -468,6 +468,9 @@ _eglParseContextAttribList(_EGLContext *ctx, _EGLDisplay *dpy,
          break;
 
       case 3:
+         // HACK: Disallow creating contexts newer than 3.1.
+         if (ctx->ClientMinorVersion > 1)
+            err = EGL_BAD_MATCH;
          /* Don't put additional version checks here.  We don't know that
           * there won't be versions > 3.0.
           */
diff --git a/src/mesa/main/version.c b/src/mesa/main/version.c
index 34f8bbbcb1..9409cb8a22 100644
--- a/src/mesa/main/version.c
+++ b/src/mesa/main/version.c
@@ -593,6 +593,9 @@ _mesa_compute_version(struct gl_context *ctx)
       return;
 
    ctx->Version = _mesa_get_version(&ctx->Extensions, &ctx->Const, ctx->API);
+   // HACK: Downgrade GLES2 version to 3.1.
+   if (ctx->API == API_OPENGLES2 && ctx->Version > 31)
+      ctx->Version = 31;
    ctx->Extensions.Version = ctx->Version;
 
    /* Make sure that the GLSL version lines up with the GL version. In some