Pretend that iommu_dma_get_sgtable is not implemented when
granule > PAGE_SIZE since I can neither test this function right now
nor do I fully understand how it is used.
Signed-off-by: Sven Peter <s...@svenpeter.dev>
---
drivers/iommu/dma-iommu.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index d6e273ec3de6..64fbd9236820 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -1315,9 +1315,15 @@ static int iommu_dma_get_sgtable(struct device *dev,
struct sg_table *sgt,
void *cpu_addr, dma_addr_t dma_addr, size_t size,
unsigned long attrs)
{
+ struct iommu_domain *domain = iommu_get_dma_domain(dev);
+ struct iommu_dma_cookie *cookie = domain->iova_cookie;
+ struct iova_domain *iovad = &cookie->iovad;
struct page *page;
int ret;
+ if (iovad->granule > PAGE_SIZE)
+ return -ENXIO;
+
if (IS_ENABLED(CONFIG_DMA_REMAP) && is_vmalloc_addr(cpu_addr)) {
struct page **pages = dma_common_find_pages(cpu_addr);
--
2.25.1
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