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authorDaniel Vetter <daniel.vetter@ffwll.ch>2013-08-14 22:02:30 (GMT)
committerSeung-Woo Kim <sw0312.kim@samsung.com>2015-02-12 02:26:06 (GMT)
commit647f620b1bd55f1f3171160b7ded753367e1eeed (patch)
tree744c0a0023f80d4a63ecb9fad7f53941d0cca886
parent5b0bb04e14723bb3631eafc6b20cb2fba70ed673 (diff)
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drm: use common drm_gem_dmabuf_release in i915/exynos driversrefs/changes/14/35314/1
Note that this is slightly tricky since both drivers store their native objects in dma_buf->priv. But both also embed the base drm_gem_object at the first position, so the implicit cast is ok. To use the release helper we need to export it, too. Change-Id: I37e9ffec79c90304d444ae9b6c47346f125feb49 Cc: Inki Dae <inki.dae@samsung.com> Cc: Intel Graphics Development <intel-gfx@lists.freedesktop.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com> [This patch is necessary for commit 7f663e197afa drm/prime: proper locking+refcounting for obj->dma_buf link] Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
-rw-r--r--drivers/gpu/drm/drm_prime.c3
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_dmabuf.c23
-rw-r--r--drivers/gpu/drm/i915/i915_gem_dmabuf.c13
-rw-r--r--include/drm/drmP.h1
4 files changed, 5 insertions, 35 deletions
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 3c7db7d..4e083af 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -216,13 +216,14 @@ static void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,
/* nothing to be done here */
}
-static void drm_gem_dmabuf_release(struct dma_buf *dma_buf)
+void drm_gem_dmabuf_release(struct dma_buf *dma_buf)
{
struct drm_gem_object *obj = dma_buf->priv;
/* drop the reference on the export fd holds */
drm_gem_object_unreference_unlocked(obj);
}
+EXPORT_SYMBOL(drm_gem_dmabuf_release);
static void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf)
{
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c
index c15d81b..003c823 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c
@@ -160,27 +160,6 @@ static void exynos_gem_end_cpu_access(struct dma_buf *dmabuf, size_t start,
dir);
}
-static void exynos_dmabuf_release(struct dma_buf *dmabuf)
-{
- struct exynos_drm_gem_obj *exynos_gem_obj = dmabuf->priv;
-
- /*
- * exynos_dmabuf_release() call means that file object's
- * f_count is 0 and it calls drm_gem_object_handle_unreference()
- * to drop the references that these values had been increased
- * at drm_prime_handle_to_fd()
- */
- if (exynos_gem_obj->base.dma_buf == dmabuf) {
- exynos_gem_obj->base.dma_buf = NULL;
-
- /*
- * drop this gem object refcount to release allocated buffer
- * and resources.
- */
- drm_gem_object_unreference_unlocked(&exynos_gem_obj->base);
- }
-}
-
static void *exynos_gem_dmabuf_kmap_atomic(struct dma_buf *dma_buf,
unsigned long page_num)
{
@@ -228,7 +207,7 @@ static struct dma_buf_ops exynos_dmabuf_ops = {
.kunmap = exynos_gem_dmabuf_kunmap,
.kunmap_atomic = exynos_gem_dmabuf_kunmap_atomic,
.mmap = exynos_gem_dmabuf_mmap,
- .release = exynos_dmabuf_release,
+ .release = drm_gem_dmabuf_release,
};
struct dma_buf *exynos_dmabuf_prime_export(struct drm_device *drm_dev,
diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
index f2e185c..63ee1a9 100644
--- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
@@ -90,17 +90,6 @@ static void i915_gem_unmap_dma_buf(struct dma_buf_attachment *attachment,
kfree(sg);
}
-static void i915_gem_dmabuf_release(struct dma_buf *dma_buf)
-{
- struct drm_i915_gem_object *obj = dma_buf->priv;
-
- if (obj->base.export_dma_buf == dma_buf) {
- /* drop the reference on the export fd holds */
- obj->base.export_dma_buf = NULL;
- drm_gem_object_unreference_unlocked(&obj->base);
- }
-}
-
static void *i915_gem_dmabuf_vmap(struct dma_buf *dma_buf)
{
struct drm_i915_gem_object *obj = dma_buf->priv;
@@ -211,7 +200,7 @@ static int i915_gem_begin_cpu_access(struct dma_buf *dma_buf, size_t start, size
static const struct dma_buf_ops i915_dmabuf_ops = {
.map_dma_buf = i915_gem_map_dma_buf,
.unmap_dma_buf = i915_gem_unmap_dma_buf,
- .release = i915_gem_dmabuf_release,
+ .release = drm_gem_dmabuf_release,
.kmap = i915_gem_dmabuf_kmap,
.kmap_atomic = i915_gem_dmabuf_kmap_atomic,
.kunmap = i915_gem_dmabuf_kunmap,
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index eaf6624..bd88475 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1614,6 +1614,7 @@ extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev,
struct dma_buf *dma_buf);
extern int drm_gem_prime_fd_to_handle(struct drm_device *dev,
struct drm_file *file_priv, int prime_fd, uint32_t *handle);
+extern void drm_gem_dmabuf_release(struct dma_buf *dma_buf);
extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);