From: Nick Ewalt <nicholasewalt@xxxxxxxxxx> Extended page tables should be mapped as DMA_TO_DEVICE, not bi-directional. Signed-off-by: Nick Ewalt <nicholasewalt@xxxxxxxxxx> Signed-off-by: Todd Poynor <toddpoynor@xxxxxxxxxx> --- drivers/staging/gasket/gasket_page_table.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/gasket/gasket_page_table.c b/drivers/staging/gasket/gasket_page_table.c index 71b77da2e18ca..e86bdc5fc79d2 100644 --- a/drivers/staging/gasket/gasket_page_table.c +++ b/drivers/staging/gasket/gasket_page_table.c @@ -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; -- 2.19.0.397.gdd90340f6a-goog _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
