drm/i915/gvt: Return -EIO if host enable_execlists not enabled when loading GVT-g

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>

diff --git a/drivers/gpu/drm/i915/intel_gvt.c b/drivers/gpu/drm/i915/intel_gvt.c
index dde9c78325e436284b8ce3dacf581a7de49abcc7..e2a3f0af1418fedf84bc6ebbbf1e22ef367d3a61 100644 (file)
--- 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_private *dev_priv)
        }
 
        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;
        }
 
        /*