staging: gasket: fix DMA direction for extended page tables (912b8a81) · Commits · 戴 / test

Extended page tables should be mapped as DMA_TO_DEVICE, not bi-directional. Signed-off-by:

drivers/staging/gasket/gasket_page_table.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -320,7 +320,7 @@ static void gasket_free_extended_subtable(struct gasket_page_table *pg_tbl,

		if (pte->dma_addr)
		dma_unmap_page(pg_tbl->device, pte->dma_addr, PAGE_SIZE,
		DMA_BIDIRECTIONAL);
		DMA_TO_DEVICE);

		vfree(pte->sublevel);

		@@ -894,7 +894,7 @@ static int gasket_alloc_extended_subtable(struct gasket_page_table *pg_tbl,

		/* Map the page into DMA space. */
		pte->dma_addr = dma_map_page(pg_tbl->device, pte->page, 0, PAGE_SIZE,
		DMA_BIDIRECTIONAL);
		DMA_TO_DEVICE);

		/* make the addresses available to the device */
		dma_addr = (pte->dma_addr + pte->offset) \| GASKET_VALID_SLOT_FLAG;