The patch titled
Subject: common: dma-mapping: Store page array in vm_struct
has been added to the -mm tree. Its filename is
common-dma-mapping-introduce-common-remapping-functions-fix-4.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/common-dma-mapping-introduce-common-remapping-functions-fix-4.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/common-dma-mapping-introduce-common-remapping-functions-fix-4.patch
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------------------------------------------------------
From: Laura Abbott <lauraa@xxxxxxxxxxxxxx>
Subject: common: dma-mapping: Store page array in vm_struct
Commit 54329ac (common: dma-mapping: introduce common remapping functions)
factored out common code for remapping arrays of pages. The code before
the refactor relied on setting area->pages with the array of mapped pages
for easy access later. The refactor dropped this, breaking parts of the
ARM DMA API. Fix this by setting the page array in the same place.
Signed-off-by: Laura Abbott <lauraa@xxxxxxxxxxxxxx>
Reported-by: Mitchel Humpherys <mitchelh@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/base/dma-mapping.c | 2 ++
1 file changed, 2 insertions(+)
diff -puN drivers/base/dma-mapping.c~common-dma-mapping-introduce-common-remapping-functions-fix-4 drivers/base/dma-mapping.c
--- a/drivers/base/dma-mapping.c~common-dma-mapping-introduce-common-remapping-functions-fix-4
+++ a/drivers/base/dma-mapping.c
@@ -285,6 +285,8 @@ void *dma_common_pages_remap(struct page
if (!area)
return NULL;
+ area->pages = pages;
+
if (map_vm_area(area, prot, pages)) {
vunmap(area->addr);
return NULL;
_
Patches currently in -mm which might be from lauraa@xxxxxxxxxxxxxx are
lib-genallocc-add-power-aligned-algorithm.patch
lib-genallocc-add-genpool-range-check-function.patch
common-dma-mapping-introduce-common-remapping-functions.patch
common-dma-mapping-introduce-common-remapping-functions-fix.patch
common-dma-mapping-introduce-common-remapping-functions-fix-2.patch
common-dma-mapping-introduce-common-remapping-functions-fix-4.patch
arm-use-genalloc-for-the-atomic-pool.patch
arm64-add-atomic-pool-for-non-coherent-and-cma-allocations.patch
linux-next.patch
debugging-keep-track-of-page-owners.patch
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