From ddeff6ee423178246a16875cae0bf033ce1e8455 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Wed, 28 May 2014 16:16:41 +0100 Subject: [PATCH] drm/i915: Silence the WARN if the user tries to GTT mmap an incoherent object If the user tries to mmap through the GTT an object that is marked as snooped, we report an error rather than allow the GPU to hang the machine. The choice of EINVAL, however, was unfortunate as we turn that into a WARN rather than a quiet SIGBUS. Signed-off-by: Chris Wilson Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_gem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 89525007925b..ea09d1a0fbd9 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1427,7 +1427,7 @@ int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) /* Access to snoopable pages through the GTT is incoherent. */ if (obj->cache_level != I915_CACHE_NONE && !HAS_LLC(dev)) { - ret = -EINVAL; + ret = -EFAULT; goto unlock; } -- 2.20.1