[PATCH 02/12] swiotlb: make swiotlb_exit a no-op if SWIOTLB_FORCE is set

[Christoph Hellwig]

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 bfc56cb217059..64b390136f9ef 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -378,6 +378,9 @@ 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