iovmm is erroneously using sg_dma_len with unmapped (DMA API-wise)
SG entries, and will break if CONFIG_NEED_SG_DMA_LENGTH is enabled.
Fix that by using sg->length instead.
Reported-by: Russell King <linux@xxxxxxxxxxxxxxxx>
Signed-off-by: Ohad Ben-Cohen <ohad@xxxxxxxxxx>
---
arch/arm/plat-omap/iovmm.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/arm/plat-omap/iovmm.c b/arch/arm/plat-omap/iovmm.c
index 83a37c5..c60737c 100644
--- a/arch/arm/plat-omap/iovmm.c
+++ b/arch/arm/plat-omap/iovmm.c
@@ -72,7 +72,7 @@ static size_t sgtable_len(const struct sg_table *sgt)
for_each_sg(sgt->sgl, sg, sgt->nents, i) {
size_t bytes;
- bytes = sg_dma_len(sg);
+ bytes = sg->length;
if (!iopgsz_ok(bytes)) {
pr_err("%s: sg[%d] not iommu pagesize(%x)\n",
@@ -198,7 +198,7 @@ static void *vmap_sg(const struct sg_table *sgt)
int err;
pa = sg_phys(sg);
- bytes = sg_dma_len(sg);
+ bytes = sg->length;
BUG_ON(bytes != PAGE_SIZE);
@@ -476,7 +476,7 @@ static int map_iovm_area(struct iommu *obj, struct iovm_struct *new,
struct iotlb_entry e;
pa = sg_phys(sg);
- bytes = sg_dma_len(sg);
+ bytes = sg->length;
flags &= ~IOVMF_PGSZ_MASK;
pgsz = bytes_to_iopgsz(bytes);
--
1.7.1
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