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| author | Maarten Lankhorst <maarten.lankhorst@canonical.com> | 2013-04-09 09:18:44 +0200 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2013-06-11 07:51:11 +1000 |
| commit | 102d6dba306c825cd5c310f73868b130931f47aa (patch) | |
| tree | 75346aaa4f291511fa64a94132813678f9cefd09 /drivers/gpu/drm/drm_prime.c | |
| parent | 328a4719b6a0930721b5f8d5c69993d3b6e3913f (diff) | |
| download | op-kernel-dev-102d6dba306c825cd5c310f73868b130931f47aa.zip op-kernel-dev-102d6dba306c825cd5c310f73868b130931f47aa.tar.gz | |
drm: add unpin function to prime helpers
Prevents buffers from being pinned forever.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/drm_prime.c')
| -rw-r--r-- | drivers/gpu/drm/drm_prime.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index dcde352..1a36b0c 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -92,10 +92,13 @@ static void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach, static void drm_gem_dmabuf_release(struct dma_buf *dma_buf) { struct drm_gem_object *obj = dma_buf->priv; + struct drm_device *dev = obj->dev; if (obj->export_dma_buf == dma_buf) { /* drop the reference on the export fd holds */ obj->export_dma_buf = NULL; + if (dev->driver->gem_prime_unpin) + dev->driver->gem_prime_unpin(obj); drm_gem_object_unreference_unlocked(obj); } } @@ -185,13 +188,19 @@ static const struct dma_buf_ops drm_gem_prime_dmabuf_ops = { struct dma_buf *drm_gem_prime_export(struct drm_device *dev, struct drm_gem_object *obj, int flags) { + struct dma_buf *buf; + if (dev->driver->gem_prime_pin) { int ret = dev->driver->gem_prime_pin(obj); if (ret) return ERR_PTR(ret); } - return dma_buf_export(obj, &drm_gem_prime_dmabuf_ops, obj->size, - 0600); + buf = dma_buf_export(obj, &drm_gem_prime_dmabuf_ops, obj->size, + 0600); + + if (IS_ERR(buf) && dev->driver->gem_prime_unpin) + dev->driver->gem_prime_unpin(obj); + return buf; } EXPORT_SYMBOL(drm_gem_prime_export); |
