summaryrefslogtreecommitdiff
path: root/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'kernel')
-rw-r--r--kernel/dma/swiotlb.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index e20b856255ef..96f832d828fd 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -1136,6 +1136,9 @@ static int swiotlb_find_slots(struct device *dev, phys_addr_t orig_addr,
int cpu, i;
int index;
+ if (alloc_size > IO_TLB_SEGSIZE * IO_TLB_SIZE)
+ return -1;
+
cpu = raw_smp_processor_id();
for (i = 0; i < default_nareas; ++i) {
index = swiotlb_search_area(dev, cpu, i, orig_addr, alloc_size,