Commit f11762c4 authored Jan 07, 2020 by Qingqing Zhou

arm: dma-mapping.c: Change the dma length in sg lists

Currently on 32-bit, the sg lists are virtually contiguous, but the dma
length of tail entries are not reorganized into zero, then error will
happen in ion_sgl_sync_range() which will check the sg lists and warn
if the dma length of tail entries is not zero.This warning is designed
for 64-bit. So change the 32-bit reorganization of sg lists like 64-bit.

Change-Id: I82e3832f8607df88ff832ece67d5dfa2791de51e
Signed-off-by: Qingqing Zhou <qqzhou@codeaurora.org>

parent 7764f1a9

arch/arm/mm/dma-mapping.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -1950,7 +1950,10 @@ int arm_iommu_map_sg(struct device dev, struct scatterlist sg,

		for_each_sg(sg, s, nents, i) {
		s->dma_address = iova + current_offset;
		s->dma_length = total_length - current_offset;
		if (i == 0)
		s->dma_length = total_length;
		else
		s->dma_length = 0;
		current_offset += s->length;
		}