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-rw-r--r--lib/dma-debug.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index f9e6d38..1a99208 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -722,10 +722,11 @@ void debug_dma_map_page(struct device *dev, struct page *page, size_t offset,
entry->size = size;
entry->direction = direction;
- if (map_single) {
- void *addr = ((char *)page_address(page)) + offset;
-
+ if (map_single)
entry->type = dma_debug_single;
+
+ if (!PageHighMem(page)) {
+ void *addr = ((char *)page_address(page)) + offset;
check_for_stack(dev, addr);
check_for_illegal_area(dev, addr, size);
}
@@ -779,8 +780,10 @@ void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
entry->sg_call_ents = nents;
entry->sg_mapped_ents = mapped_ents;
- check_for_stack(dev, sg_virt(s));
- check_for_illegal_area(dev, sg_virt(s), s->length);
+ if (!PageHighMem(sg_page(s))) {
+ check_for_stack(dev, sg_virt(s));
+ check_for_illegal_area(dev, sg_virt(s), s->length);
+ }
add_dma_entry(entry);
}
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