linux-kernel - Re: [PATCH] RDMA/cxgb4: re-fix 32-bit build warning

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Date:	Wed, 21 Oct 2015 16:57:17 -0400
From:	Doug Ledford <dledford@...hat.com>
To:	Arnd Bergmann <arnd@...db.de>, Steve Wise <swise@...lsio.com>
Cc:	Sean Hefty <sean.hefty@...el.com>,
	Hal Rosenstock <hal.rosenstock@...il.com>,
	linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] RDMA/cxgb4: re-fix 32-bit build warning

On 10/07/2015 08:10 AM, Arnd Bergmann wrote:
> Casting a pointer to __be64 produces a warning on 32-bit architectures:
> 
> drivers/infiniband/hw/cxgb4/mem.c:147:20: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
>     req->wr.wr_lo = (__force __be64)&wr_wait;
> 
> This was fixed at least twice for this driver in different places,
> and accidentally reverted once more. This puts the correct version
> back in place.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Fixes: 6198dd8d7a6a7 ("iw_cxgb4: 32b platform fixes")

Thanks, applied.

> 
> diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c
> index 026b91ebd5e2..140415d31bcc 100644
> --- a/drivers/infiniband/hw/cxgb4/mem.c
> +++ b/drivers/infiniband/hw/cxgb4/mem.c
> @@ -144,7 +144,7 @@ static int _c4iw_write_mem_inline(struct c4iw_rdev *rdev, u32 addr, u32 len,
>  		if (i == (num_wqe-1)) {
>  			req->wr.wr_hi = cpu_to_be32(FW_WR_OP_V(FW_ULPTX_WR) |
>  						    FW_WR_COMPL_F);
> -			req->wr.wr_lo = (__force __be64)&wr_wait;
> +			req->wr.wr_lo = (__force __be64)(unsigned long)&wr_wait;
>  		} else
>  			req->wr.wr_hi = cpu_to_be32(FW_WR_OP_V(FW_ULPTX_WR));
>  		req->wr.wr_mid = cpu_to_be32(
> 
> --
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> 


-- 
Doug Ledford <dledford@...hat.com>
              GPG KeyID: 0E572FDD



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