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drm: use common drm_gem_dmabuf_release in i915/exynos drivers 

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.

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 commit is contained in:
Daniel Vetter 2013-08-15 00:02:30 +02:00 committed by Dave Airlie
parent 2bc7b0ca8c
commit c1d6798d20
4 changed files with 5 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/drm_prime.c
View File

@ -192,7 +192,7 @@ 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;
@ -202,6 +202,7 @@ static void drm_gem_dmabuf_release(struct dma_buf *dma_buf)
drm_gem_object_unreference_unlocked(obj);
}
}
EXPORT_SYMBOL(drm_gem_dmabuf_release);
static void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf)
{

23
drivers/gpu/drm/exynos/exynos_drm_dmabuf.c
View File

@ -127,27 +127,6 @@ static void exynos_gem_unmap_dma_buf(struct dma_buf_attachment *attach,
/* Nothing to do. */
}
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.export_dma_buf == dmabuf) {
exynos_gem_obj->base.export_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)
{
@ -193,7 +172,7 @@ 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,

13
drivers/gpu/drm/i915/i915_gem_dmabuf.c
View File

@ -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,

1
include/drm/drmP.h
View File

@ -1478,6 +1478,7 @@ 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);