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Commit 8ee1e2bc authored by Liam Mark's avatar Liam Mark
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ion: carveout: Use device for cache maintenance 



Use device when calling ion_pages_sync_for_device to make
sure cache maintenance is properly applied.

Change-Id: I7f8499148cfd560122de430e343830d5e870b505
Signed-off-by: default avatarLiam Mark <lmark@codeaurora.org>
parent 4e48a9f1

drivers/staging/android/ion/ion_carveout_heap.c

+5 −3
Original line number Diff line number Diff line
@@ -96,11 +96,12 @@ static void ion_carveout_heap_free(struct ion_buffer *buffer) 
	struct sg_table *table = buffer->sg_table;

	struct page *page = sg_page(table->sgl);

	phys_addr_t paddr = page_to_phys(page);

	struct device *dev = (struct device *)heap->priv;



	ion_heap_buffer_zero(buffer);



	if (ion_buffer_cached(buffer))

		dma_sync_sg_for_device(NULL, table->sgl, table->nents,

		ion_pages_sync_for_device(dev, page, buffer->size,

					  DMA_BIDIRECTIONAL);



	ion_carveout_free(heap, paddr, buffer->size);
@@ -123,11 +124,12 @@ struct ion_heap *ion_carveout_heap_create(struct ion_platform_heap *heap_data) 


	struct page *page;

	size_t size;

	struct device *dev = (struct device *)heap_data->priv;



	page = pfn_to_page(PFN_DOWN(heap_data->base));

	size = heap_data->size;



	ion_pages_sync_for_device(NULL, page, size, DMA_BIDIRECTIONAL);

	ion_pages_sync_for_device(dev, page, size, DMA_BIDIRECTIONAL);



	ret = ion_heap_pages_zero(page, size, pgprot_writecombine(PAGE_KERNEL));

	if (ret)