From: Christoph Hellwig Date: Mon, 14 Feb 2022 09:01:26 +0000 (+0100) Subject: swiotlb: make swiotlb_exit a no-op if SWIOTLB_FORCE is set X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=3469d36d470df148e8d940c1a6399510562bf3b0;p=linux.git swiotlb: make swiotlb_exit a no-op if SWIOTLB_FORCE is set If force bouncing is enabled we can't release the buffers. Signed-off-by: Christoph Hellwig Reviewed-by: Anshuman Khandual Reviewed-by: Konrad Rzeszutek Wilk Tested-by: Boris Ostrovsky --- diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index 73a41cec9e386..98bb0eb44a7bf 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;