diff --git a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c index 315037af7fe0ef402fd20ced6ca0b2f42d2f146b..9df97714b6c0b8a2244fa1f61da5eb4a76c774dd 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c @@ -232,7 +232,12 @@ struct drm_gem_object *exynos_dmabuf_prime_import(struct drm_device *drm_dev, /* is it from our device? */ if (obj->dev == drm_dev) { + /* + * Importing dmabuf exported from out own gem increases + * refcount on gem itself instead of f_count of dmabuf. + */ drm_gem_object_reference(obj); + dma_buf_put(dma_buf); return obj; } } diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c index 7be4241e824263efb8116533b680738ef74d449e..abeaafef6d7ef9986313be7ab8e0c2c5a992c065 100644 --- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c +++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c @@ -266,7 +266,12 @@ struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev, obj = dma_buf->priv; /* is it from our device? */ if (obj->base.dev == dev) { + /* + * Importing dmabuf exported from out own gem increases + * refcount on gem itself instead of f_count of dmabuf. + */ drm_gem_object_reference(&obj->base); + dma_buf_put(dma_buf); return &obj->base; } } diff --git a/drivers/gpu/drm/nouveau/nouveau_prime.c b/drivers/gpu/drm/nouveau/nouveau_prime.c index 3543fec2355e52804dc69fcf8fd695632308a7a4..b8e05ae38212db2b8912f874dc4fe5fb627e7102 100644 --- a/drivers/gpu/drm/nouveau/nouveau_prime.c +++ b/drivers/gpu/drm/nouveau/nouveau_prime.c @@ -193,6 +193,7 @@ struct drm_gem_object *nouveau_gem_prime_import(struct drm_device *dev, if (nvbo->gem) { if (nvbo->gem->dev == dev) { drm_gem_object_reference(nvbo->gem); + dma_buf_put(dma_buf); return nvbo->gem; } } diff --git a/drivers/gpu/drm/radeon/radeon_prime.c b/drivers/gpu/drm/radeon/radeon_prime.c index e09521858f64469cf51b7c8700576d5b6744998e..26c23bb651c6b53835a2061096bdecd4f9d47492 100644 --- a/drivers/gpu/drm/radeon/radeon_prime.c +++ b/drivers/gpu/drm/radeon/radeon_prime.c @@ -194,6 +194,7 @@ struct drm_gem_object *radeon_gem_prime_import(struct drm_device *dev, bo = dma_buf->priv; if (bo->gem_base.dev == dev) { drm_gem_object_reference(&bo->gem_base); + dma_buf_put(dma_buf); return &bo->gem_base; } } diff --git a/drivers/staging/omapdrm/omap_gem_dmabuf.c b/drivers/staging/omapdrm/omap_gem_dmabuf.c index 9a302062b031d4ea70d8205523aea7694dc5e54f..ea3840038250391bb3e3e0c897fc07a246b67732 100644 --- a/drivers/staging/omapdrm/omap_gem_dmabuf.c +++ b/drivers/staging/omapdrm/omap_gem_dmabuf.c @@ -207,7 +207,12 @@ struct drm_gem_object *omap_gem_prime_import(struct drm_device *dev, obj = buffer->priv; /* is it from our device? */ if (obj->dev == dev) { + /* + * Importing dmabuf exported from out own gem increases + * refcount on gem itself instead of f_count of dmabuf. + */ drm_gem_object_reference(obj); + dma_buf_put(buffer); return obj; } }