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Date: Tue, 16 Sep 2014 09:45:54 -0700 From: Laura Abbott <lauraa@...eaurora.org> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Laura Abbott <lauraa@...eaurora.org>, linux-mm@...ck.org, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, Mitchel Humpherys <mitchelh@...eaurora.org> Subject: [mmotm][PATCH] 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. Reported-by: Mitchel Humpherys <mitchelh@...eaurora.org> Signed-off-by: Laura Abbott <lauraa@...eaurora.org> --- drivers/base/dma-mapping.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c index 3a6af66..9e8bbdd 100644 --- a/drivers/base/dma-mapping.c +++ b/drivers/base/dma-mapping.c @@ -285,6 +285,8 @@ void *dma_common_pages_remap(struct page **pages, size_t size, if (!area) return NULL; + area->pages = pages; + if (map_vm_area(area, prot, pages)) { vunmap(area->addr); return NULL; -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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