From 22c344e9a03beeb7071a588a973012749f84a830 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Wed, 11 Feb 2009 14:26:45 +0000 Subject: [PATCH] drm/i915: Check fence status on every pin. As we may steal the fence register of an unpinned buffer for another, every time we repin the buffer we need to recheck whether it needs to be allocated a fence. Signed-off-by: Chris Wilson Signed-off-by: Eric Anholt --- drivers/gpu/drm/i915/i915_gem.c | 23 +++++++++++++++-------- 1 file changed, 15 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 6497c1ad02d3..12c7d78d9240 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2730,14 +2730,21 @@ i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment) DRM_ERROR("Failure to bind: %d\n", ret); return ret; } - /* - * Pre-965 chips need a fence register set up in order to - * properly handle tiled surfaces. - */ - if (!IS_I965G(dev) && - obj_priv->fence_reg == I915_FENCE_REG_NONE && - obj_priv->tiling_mode != I915_TILING_NONE) - i915_gem_object_get_fence_reg(obj, true); + } + /* + * Pre-965 chips need a fence register set up in order to + * properly handle tiled surfaces. + */ + if (!IS_I965G(dev) && + obj_priv->fence_reg == I915_FENCE_REG_NONE && + obj_priv->tiling_mode != I915_TILING_NONE) { + ret = i915_gem_object_get_fence_reg(obj, true); + if (ret != 0) { + if (ret != -EBUSY && ret != -ERESTARTSYS) + DRM_ERROR("Failure to install fence: %d\n", + ret); + return ret; + } } obj_priv->pin_count++;