From 6ebebc9206fca1d20d90edec4873e819cc4051d0 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Thu, 26 Apr 2012 23:28:11 +0200 Subject: [PATCH] drm/i915: disallow clip rects on gen5+ Unfortunately there has been dri1 userspace that used gem to manage the gtt and hence also needed cliprects in the execbuf ioctl. So we can't ever remove that code without breaking the ioctl abi. But at least we can disable it on gen5+, because these horrible versions of mesa have not supported these chips. Acked-by: Jesse Barnes Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_gem_execbuffer.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index cbba0aa..a46ed26 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -1116,6 +1116,11 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data, return -EINVAL; } + if (INTEL_INFO(dev)->gen >= 5) { + DRM_DEBUG("clip rectangles are only valid on pre-gen5\n"); + return -EINVAL; + } + cliprects = kmalloc(args->num_cliprects * sizeof(*cliprects), GFP_KERNEL); if (cliprects == NULL) { -- 2.7.4