[RFC PATCH 24/42] drm/i915: expose missing map_gtt support to users

[Matthew Auld <matthew.auld@intel.com>]

From: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>

Done by returning -ENODEV from the map_gtt version ioctl.

Cc: Antonio Argenziano <antonio.argenziano@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 6630212f2faf..dc446430a340 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -390,6 +390,8 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
 			return value;
 		break;
 	case I915_PARAM_MMAP_GTT_VERSION:
+		if (!HAS_MAPPABLE_APERTURE(dev_priv))
+			return -ENODEV;
 		/* Though we've started our numbering from 1, and so class all
 		 * earlier versions as 0, in effect their value is undefined as
 		 * the ioctl will report EINVAL for the unknown param!
-- 
2.20.1

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