staging: android: ion: Get rid of ion_sg_table

The ion_sg_table interface is mostly a reimplementation of
what dma_buf is doing. Clients should be using dma_buf APIs instead.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index a2cf93b..95b18ac 100644 (file)
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -917,26 +917,6 @@ void ion_client_destroy(struct ion_client *client)
 }
 EXPORT_SYMBOL(ion_client_destroy);
 
-struct sg_table *ion_sg_table(struct ion_client *client,
-                             struct ion_handle *handle)
-{
-       struct ion_buffer *buffer;
-       struct sg_table *table;
-
-       mutex_lock(&client->lock);
-       if (!ion_handle_validate(client, handle)) {
-               pr_err("%s: invalid handle passed to map_dma.\n",
-                      __func__);
-               mutex_unlock(&client->lock);
-               return ERR_PTR(-EINVAL);
-       }
-       buffer = handle->buffer;
-       table = buffer->sg_table;
-       mutex_unlock(&client->lock);
-       return table;
-}
-EXPORT_SYMBOL(ion_sg_table);
-
 static void ion_buffer_sync_for_device(struct ion_buffer *buffer,
                                       struct device *dev,
                                       enum dma_data_direction direction);

diff --git a/drivers/staging/android/ion/ion.h b/drivers/staging/android/ion/ion.h
index a1331fc..225c34a 100644 (file)
--- a/drivers/staging/android/ion/ion.h
+++ b/drivers/staging/android/ion/ion.h
@@ -148,17 +148,6 @@ void ion_free(struct ion_client *client, struct ion_handle *handle);
 int ion_phys(struct ion_client *client, struct ion_handle *handle,
             ion_phys_addr_t *addr, size_t *len);
 
-/**
- * ion_map_dma - return an sg_table describing a handle
- * @client:    the client
- * @handle:    the handle
- *
- * This function returns the sg_table describing
- * a particular ion handle.
- */
-struct sg_table *ion_sg_table(struct ion_client *client,
-                             struct ion_handle *handle);
-
 /**
  * ion_map_kernel - create mapping for the given handle
  * @client:    the client