Currently the heap helper uses DEFINE_DMA_BUF_EXPORT_INFO,
which uses KBUILD_MODNAME for the dma_buf_export_info.exp_name.
This effectively makes all dma-bufs exported by the heap
helper as coming from "heap-helpers", instead of the actual heap name
(cma, system, etc).
Fix this by adding a dma-heap name getter, and then setting
dma_buf_export_info.exp_name.
Signed-off-by: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx>
---
drivers/dma-buf/dma-heap.c | 5 +++++
drivers/dma-buf/heaps/heap-helpers.c | 1 +
include/linux/dma-heap.h | 2 ++
3 files changed, 8 insertions(+)
diff --git a/drivers/dma-buf/dma-heap.c b/drivers/dma-buf/dma-heap.c
index afd22c9dbdcf..13d001ee381a 100644
--- a/drivers/dma-buf/dma-heap.c
+++ b/drivers/dma-buf/dma-heap.c
@@ -190,6 +190,11 @@ void *dma_heap_get_drvdata(struct dma_heap *heap)
return heap->priv;
}
+const char *dma_heap_get_name(struct dma_heap *heap)
+{
+ return heap->name;
+}
+
struct dma_heap *dma_heap_add(const struct dma_heap_export_info *exp_info)
{
struct dma_heap *heap, *h, *err_ret;
diff --git a/drivers/dma-buf/heaps/heap-helpers.c b/drivers/dma-buf/heaps/heap-helpers.c
index 9f964ca3f59c..47ecf9518442 100644
--- a/drivers/dma-buf/heaps/heap-helpers.c
+++ b/drivers/dma-buf/heaps/heap-helpers.c
@@ -30,6 +30,7 @@ struct dma_buf *heap_helper_export_dmabuf(struct heap_helper_buffer *buffer,
{
DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
+ exp_info.exp_name = dma_heap_get_name(buffer->heap);
exp_info.ops = &heap_helper_ops;
exp_info.size = buffer->size;
exp_info.flags = fd_flags;
diff --git a/include/linux/dma-heap.h b/include/linux/dma-heap.h
index 454e354d1ffb..0acf7e71afb5 100644
--- a/include/linux/dma-heap.h
+++ b/include/linux/dma-heap.h
@@ -50,6 +50,8 @@ struct dma_heap_export_info {
*/
void *dma_heap_get_drvdata(struct dma_heap *heap);
+const char *dma_heap_get_name(struct dma_heap *heap);
+
/**
* dma_heap_add - adds a heap to dmabuf heaps
* @exp_info: information needed to register this heap
--
2.27.0
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