If force bouncing is enabled we can't release the buffers.

Signed-off-by: Christoph Hellwig <h...@lst.de>
Reviewed-by: Anshuman Khandual <anshuman.khand...@arm.com>
---
 kernel/dma/swiotlb.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index 908eac2527cb1..af9d257501a64 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -369,6 +369,9 @@ void __init swiotlb_exit(void)
        unsigned long tbl_vaddr;
        size_t tbl_size, slots_size;
 
+       if (swiotlb_force == SWIOTLB_FORCE)
+               return;
+
        if (!mem->nslabs)
                return;
 
-- 
2.30.2

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