Re: [PATCH 02/11] swiotlb: make swiotlb_exit a no-op if SWIOTLB_FORCE is set

Anshuman Khandual
2022-02-24T10:41:00Z

On 2/22/22 9:05 PM, Christoph Hellwig wrote:
> If force bouncing is enabled we can't release the bufffers.

typo ^^^^

>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
> kernel/dma/swiotlb.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
> index f1e7ea160b433..36fbf1181d285 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;
>
>

Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>