linux-kernel - Re: [PATCH 01/17] fpga: dfl-fme-mgr: fix FME_PR_INTFC

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Message-ID: <20190401195447.GA1910@archbook>
Date:   Mon, 1 Apr 2019 12:54:47 -0700
From:   Moritz Fischer <mdf@...nel.org>
To:     Wu Hao <hao.wu@...el.com>
Cc:     atull@...nel.org, mdf@...nel.org, linux-fpga@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-api@...r.kernel.org
Subject: Re: [PATCH 01/17] fpga: dfl-fme-mgr: fix FME_PR_INTFC_ID register
 address.

Hi Wu,

On Mon, Mar 25, 2019 at 11:07:28AM +0800, Wu Hao wrote:
> FME_PR_INTFC_ID is used as compat_id for fpga manager and region,
> but high 64 bits and low 64 bits of the compat_id are swapped by
> mistake. This patch fixes this problem by fixing register address.
> 
> Signed-off-by: Wu Hao <hao.wu@...el.com>
> ---
>  drivers/fpga/dfl-fme-mgr.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/fpga/dfl-fme-mgr.c b/drivers/fpga/dfl-fme-mgr.c
> index 76f3770..b3f7eee 100644
> --- a/drivers/fpga/dfl-fme-mgr.c
> +++ b/drivers/fpga/dfl-fme-mgr.c
> @@ -30,8 +30,8 @@
>  #define FME_PR_STS		0x10
>  #define FME_PR_DATA		0x18
>  #define FME_PR_ERR		0x20
> -#define FME_PR_INTFC_ID_H	0xA8
> -#define FME_PR_INTFC_ID_L	0xB0
> +#define FME_PR_INTFC_ID_L	0xA8
> +#define FME_PR_INTFC_ID_H	0xB0

Does this handle endianess correct?
>  
>  /* FME PR Control Register Bitfield */
>  #define FME_PR_CTRL_PR_RST	BIT_ULL(0)  /* Reset PR engine */
> -- 
> 2.7.4
> 

Cheers,
Moritz