lib/scatterlist: sg_page_iter: support sg lists w/o backing pages

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / gpu / drm / i915 / i915_gem.c

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 8a2cbee..911bd40 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -442,7 +442,7 @@ i915_gem_shmem_pread(struct drm_device *dev,
 
        for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents,
                         offset >> PAGE_SHIFT) {
-               struct page *page = sg_iter.page;
+               struct page *page = sg_page_iter_page(&sg_iter);
 
                if (remain <= 0)
                        break;
@@ -765,7 +765,7 @@ i915_gem_shmem_pwrite(struct drm_device *dev,
 
        for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents,
                         offset >> PAGE_SHIFT) {
-               struct page *page = sg_iter.page;
+               struct page *page = sg_page_iter_page(&sg_iter);
                int partial_cacheline_write;
 
                if (remain <= 0)
@@ -1647,7 +1647,7 @@ i915_gem_object_put_pages_gtt(struct drm_i915_gem_object *obj)
                obj->dirty = 0;
 
        for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, 0) {
-               struct page *page = sg_iter.page;
+               struct page *page = sg_page_iter_page(&sg_iter);
 
                if (obj->dirty)
                        set_page_dirty(page);
@@ -1827,7 +1827,7 @@ i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj)
 err_pages:
        sg_mark_end(sg);
        for_each_sg_page(st->sgl, &sg_iter, st->nents, 0)
-               page_cache_release(sg_iter.page);
+               page_cache_release(sg_page_iter_page(&sg_iter));
        sg_free_table(st);
        kfree(st);
        return PTR_ERR(page);
@@ -2128,11 +2128,11 @@ static void i915_gem_reset_fences(struct drm_device *dev)
        for (i = 0; i < dev_priv->num_fence_regs; i++) {
                struct drm_i915_fence_reg *reg = &dev_priv->fence_regs[i];
 
-               i915_gem_write_fence(dev, i, NULL);
-
                if (reg->obj)
                        i915_gem_object_fence_lost(reg->obj);
 
+               i915_gem_write_fence(dev, i, NULL);
+
                reg->pin_count = 0;
                reg->obj = NULL;
                INIT_LIST_HEAD(&reg->lru_list);
@@ -2722,6 +2722,7 @@ int
 i915_gem_object_put_fence(struct drm_i915_gem_object *obj)
 {
        struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
+       struct drm_i915_fence_reg *fence;
        int ret;
 
        ret = i915_gem_object_wait_fence(obj);
@@ -2731,10 +2732,10 @@ i915_gem_object_put_fence(struct drm_i915_gem_object *obj)
        if (obj->fence_reg == I915_FENCE_REG_NONE)
                return 0;
 
-       i915_gem_object_update_fence(obj,
-                                    &dev_priv->fence_regs[obj->fence_reg],
-                                    false);
+       fence = &dev_priv->fence_regs[obj->fence_reg];
+
        i915_gem_object_fence_lost(obj);
+       i915_gem_object_update_fence(obj, fence, false);
 
        return 0;
 }