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Commit cb92ae81 authored by FUJITA Tomonori's avatar FUJITA Tomonori Committed by Jens Axboe
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sparc64: zero out dma_length 



zero out dma_length in the entry immediately following the last mapped
entry for unmap_sg.

Signed-off-by: default avatarFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent 83fcaf70

arch/sparc64/kernel/iommu_common.c

+5 −0
Original line number Diff line number Diff line
@@ -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;