dma-buf: cleanup dma_buf_export() to make it easily extensible

At present, dma_buf_export() takes a series of parameters, which
makes it difficult to add any new parameters for exporters, if required.

Make it simpler by moving all these parameters into a struct, and pass
the struct * as parameter to dma_buf_export().

While at it, unite dma_buf_export_named() with dma_buf_export(), and
change all callers accordingly.

Reviewed-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>

1 files changed, 7 insertions, 2 deletions

diff --git a/drivers/gpu/drm/ttm/ttm_object.c b/drivers/gpu/drm/ttm/ttm_object.c
index 12c87110db3a..4f5fa8d65fe9 100644
--- a/drivers/gpu/drm/ttm/ttm_object.c
+++ b/drivers/gpu/drm/ttm/ttm_object.c
@@ -683,6 +683,12 @@ int ttm_prime_handle_to_fd(struct ttm_object_file *tfile,
 
         dma_buf = prime->dma_buf;
         if (!dma_buf || !get_dma_buf_unless_doomed(dma_buf)) {
+                DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
+
+                exp_info.ops = &tdev->ops;
+                exp_info.size = prime->size;
+                exp_info.flags = flags;
+                exp_info.priv = prime;
 
                 /*
                  * Need to create a new dma_buf, with memory accounting.
@@ -694,8 +700,7 @@ int ttm_prime_handle_to_fd(struct ttm_object_file *tfile,
                         goto out_unref;
                 }
 
-                dma_buf = dma_buf_export(prime, &tdev->ops,
-                                         prime->size, flags, NULL);
+                dma_buf = dma_buf_export(&exp_info);
                 if (IS_ERR(dma_buf)) {
                         ret = PTR_ERR(dma_buf);
                         ttm_mem_global_free(tdev->mem_glob,