[v2,1/2] dmaengine: Add metadata_ops for dma_async_tx_descriptor

Vinod,

On 2018-09-11 10:33, Vinod wrote:

quoted

+int dmaengine_desc_attach_metadata(struct dma_async_tx_descriptor *desc,
+				   void *data, size_t len)
+{
+	int ret;
+
+	if (!desc)
+		return -EINVAL;
+
+	ret = desc_check_and_set_metadata_mode(desc, DESC_METADATA_CLIENT);
+	if (ret)
+		return ret;
+
+	if (!desc->metadata_ops || !desc->metadata_ops->attach)
+		return -ENOTSUPP;
+
+	return desc->metadata_ops->attach(desc, data, len);
+}
+EXPORT_SYMBOL(dmaengine_desc_attach_metadata);

EXPORT_SYMBOL_GPL ?

Sure, I think I have looked at
dma_async_tx_descriptor_init/dmaengine_get_unmap_data/dma_issue_pending_all/etc
they have EXPORT_SYMBOL()

- Péter

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