struct dma_buf_attachment *attach;
int ret;
- if (WARN_ON(!dmabuf || !dev || !dmabuf->ops))
+ if (WARN_ON(!dmabuf || !dev))
return ERR_PTR(-EINVAL);
attach = kzalloc(sizeof(struct dma_buf_attachment), GFP_KERNEL);
*/
void dma_buf_detach(struct dma_buf *dmabuf, struct dma_buf_attachment *attach)
{
- if (WARN_ON(!dmabuf || !attach || !dmabuf->ops))
+ if (WARN_ON(!dmabuf || !attach))
return;
mutex_lock(&dmabuf->lock);
might_sleep();
- if (WARN_ON(!attach || !attach->dmabuf || !attach->dmabuf->ops))
+ if (WARN_ON(!attach || !attach->dmabuf))
return ERR_PTR(-EINVAL);
mutex_lock(&attach->dmabuf->lock);
- if (attach->dmabuf->ops->map_dma_buf)
- sg_table = attach->dmabuf->ops->map_dma_buf(attach, direction);
+ sg_table = attach->dmabuf->ops->map_dma_buf(attach, direction);
mutex_unlock(&attach->dmabuf->lock);
return sg_table;
void dma_buf_unmap_attachment(struct dma_buf_attachment *attach,
struct sg_table *sg_table)
{
- if (WARN_ON(!attach || !attach->dmabuf || !sg_table
- || !attach->dmabuf->ops))
+ if (WARN_ON(!attach || !attach->dmabuf || !sg_table))
return;
mutex_lock(&attach->dmabuf->lock);
- if (attach->dmabuf->ops->unmap_dma_buf)
- attach->dmabuf->ops->unmap_dma_buf(attach, sg_table);
+ attach->dmabuf->ops->unmap_dma_buf(attach, sg_table);
mutex_unlock(&attach->dmabuf->lock);
}