kellen/gasket-driver
1
0
Fork 0
forked from MIrrors/gasket-driver
Code Pull Requests Actions Packages Activity

staging: gasket: page_table: fix dma_data_direction

Browse Source 
Extended page tables can be mapped as DMA_TO_DEVICE.
Calls to dma_unmap_page should match corresponding dma_map_page.

Change-Id: I2d09fd5d66c364e190b073fabe089ce5eaf426f6
Signed-off-by: Nick Ewalt <nicholasewalt@google.com>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
This commit is contained in:
Leonid Lobachev
2019-09-23 11:53:12 -07:00
parent 3e21ff65d6
commit 06938d183c
1 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
gasket_page_table.c
View File

@@ -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);
@@ -612,7 +612,7 @@ static void gasket_perform_unmapping(struct gasket_page_table *pg_tbl,
if (ptes[i].status == PTE_INUSE) {
if (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))
--pg_tbl->num_active_pages;
@@ -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;