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staging: gasket: fix data page unmap DMA direction

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The DMA direction supplied to dma_unmap_page should match the
corresponding dma_map_page call, which is mapped bi-directional.

Signed-off-by: Nick Ewalt <nicholasewalt@google.com>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Nick Ewalt 2018-09-17 05:39:00 -07:00 committed by Greg Kroah-Hartman
parent 912b8a811c
commit d2118f8e93
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/gasket/gasket_page_table.c
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@ -612,7 +612,7 @@ static void gasket_perform_unmapping(struct gasket_page_table *pg_tbl,
if (ptes[i].status == PTE_INUSE) { if (ptes[i].status == PTE_INUSE) {
if (ptes[i].dma_addr) { if (ptes[i].dma_addr) {
dma_unmap_page(pg_tbl->device, ptes[i].dma_addr, dma_unmap_page(pg_tbl->device, ptes[i].dma_addr,
PAGE_SIZE, DMA_FROM_DEVICE); PAGE_SIZE, DMA_BIDIRECTIONAL);
} }
if (gasket_release_page(ptes[i].page)) if (gasket_release_page(ptes[i].page))
--pg_tbl->num_active_pages; --pg_tbl->num_active_pages;