From 36ccc4f89fe595567d91e3246c5d81952ba3d8b2 Mon Sep 17 00:00:00 2001
From: Chuanxiao Dong <chuanxiao.dong@intel.com>
Date: Sat, 27 May 2017 17:44:18 +0800
Subject: [PATCH] drm/i915/gvt: Return -EIO if host enable_execlists not enabled when loading GVT-g
Git-commit: 36ccc4f89fe595567d91e3246c5d81952ba3d8b2
Patch-mainline: v4.13-rc1
References: FATE#322643 bsc#1055900

GVT-g relies on the enable_execlists parameter in i915. If this option
is not enabled for GVT-g, should return -EIO to make i915 driver loading
failed.

V2: 
- Use DMR_ERROR as it is a fatal message. (Chris)

Suggested-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpu/drm/i915/intel_gvt.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/i915/intel_gvt.c
+++ b/drivers/gpu/drm/i915/intel_gvt.c
@@ -96,8 +96,8 @@ int intel_gvt_init(struct drm_i915_priva
 	}
 
 	if (!i915.enable_execlists) {
-		DRM_INFO("GPU guest virtualisation [GVT-g] disabled due to disabled execlist submission [i915.enable_execlists module parameter]\n");
-		goto bail;
+		DRM_ERROR("i915 GVT-g loading failed due to disabled execlists mode\n");
+		return -EIO;
 	}
 
 	/*