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drm: Assert that BO is locked in drm_gem_vram_{pin, unpin}_locked()
We may not call drm_gem_vram_{pin,unpin}_locked() with an unlocked BO. Now test for this. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20190521110831.20200-4-tzimmermann@suse.de Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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@ -284,6 +284,8 @@ int drm_gem_vram_pin_locked(struct drm_gem_vram_object *gbo,
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int i, ret;
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struct ttm_operation_ctx ctx = { false, false };
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lockdep_assert_held(&gbo->bo.resv->lock.base);
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if (gbo->pin_count) {
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++gbo->pin_count;
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return 0;
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@ -361,6 +363,8 @@ int drm_gem_vram_unpin_locked(struct drm_gem_vram_object *gbo)
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int i, ret;
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struct ttm_operation_ctx ctx = { false, false };
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lockdep_assert_held(&gbo->bo.resv->lock.base);
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if (WARN_ON_ONCE(!gbo->pin_count))
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return 0;
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