Re: [PATCH next] siw: Fix pointer-to-int-cast warning in siw_rx_pbl()

[Jason Gunthorpe <jgg@ziepe.ca>]

On Wed, Jun 10, 2020 at 12:47:17PM -0500, Tom Seewald wrote:
> The variable buf_addr is type dma_addr_t, which may not be the same size
> as a pointer.  To ensure it is the correct size, cast to a uintptr_t.
> 
> Signed-off-by: Tom Seewald <tseewald@gmail.com>
>  drivers/infiniband/sw/siw/siw_qp_rx.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/infiniband/sw/siw/siw_qp_rx.c b/drivers/infiniband/sw/siw/siw_qp_rx.c
> index 650520244ed0..7271d705f4b0 100644
> +++ b/drivers/infiniband/sw/siw/siw_qp_rx.c
> @@ -139,7 +139,8 @@ static int siw_rx_pbl(struct siw_rx_stream *srx, int *pbl_idx,
>  			break;
>  
>  		bytes = min(bytes, len);
> -		if (siw_rx_kva(srx, (void *)buf_addr, bytes) == bytes) {
> +		if (siw_rx_kva(srx, (void *)(uintptr_t)buf_addr, bytes) ==
> +		    bytes) {

How is a dma_addr_t being cast to a void *? That can't be right?
Bernard??

Jason