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-rw-r--r--lib/swiotlb.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 9e2fe3e1804c..ac25cd28e807 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -581,12 +581,15 @@ swiotlb_full(struct device *dev, size_t size, int dir, int do_panic)
581 printk(KERN_ERR "DMA: Out of SW-IOMMU space for %zu bytes at " 581 printk(KERN_ERR "DMA: Out of SW-IOMMU space for %zu bytes at "
582 "device %s\n", size, dev ? dev_name(dev) : "?"); 582 "device %s\n", size, dev ? dev_name(dev) : "?");
583 583
584 if (size > io_tlb_overflow && do_panic) { 584 if (size <= io_tlb_overflow || !do_panic)
585 if (dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL) 585 return;
586 panic("DMA: Memory would be corrupted\n"); 586
587 if (dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL) 587 if (dir == DMA_BIDIRECTIONAL)
588 panic("DMA: Random memory would be DMAed\n"); 588 panic("DMA: Random memory could be DMA accessed\n");
589 } 589 if (dir == DMA_FROM_DEVICE)
590 panic("DMA: Random memory could be DMA written\n");
591 if (dir == DMA_TO_DEVICE)
592 panic("DMA: Random memory could be DMA read\n");
590} 593}
591 594
592/* 595/*