From: FUJITA Tomonori Date: Tue, 23 Oct 2007 10:58:39 +0000 (+0200) Subject: sparc64: zero out dma_length X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=cb92ae81509eb5ddaea53884b60437502c837405;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git sparc64: zero out dma_length zero out dma_length in the entry immediately following the last mapped entry for unmap_sg. Signed-off-by: FUJITA Tomonori Signed-off-by: Jens Axboe --- diff --git a/arch/sparc64/kernel/iommu_common.c b/arch/sparc64/kernel/iommu_common.c index 78e8277df655..b70324e0d83d 100644 --- a/arch/sparc64/kernel/iommu_common.c +++ b/arch/sparc64/kernel/iommu_common.c @@ -233,6 +233,11 @@ unsigned long prepare_sg(struct scatterlist *sg, int nents) dma_sg->dma_address = dent_addr; dma_sg->dma_length = dent_len; + if (dma_sg != sg) { + dma_sg = next_sg(dma_sg); + dma_sg->dma_length = 0; + } + return ((unsigned long) dent_addr + (unsigned long) dent_len + (IO_PAGE_SIZE - 1UL)) >> IO_PAGE_SHIFT;