Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Subject: Re: [PATCHv1 1/4] fpga: fpga-mgr: add
 FPGA_MGR_BITSTREM_AUTHENTICATION flag
To:     richard.gong@linux.intel.com, mdf@kernel.org,
        linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org
Cc:     dinguyen@kernel.org, sridhar.rajagopal@intel.com,
        Richard Gong <richard.gong@intel.com>
References: <1605204403-6663-1-git-send-email-richard.gong@linux.intel.com>
 <1605204403-6663-2-git-send-email-richard.gong@linux.intel.com>
From:   Tom Rix <trix@redhat.com>
Message-ID: <a71b7a9c-effa-ad01-4fde-3e1a1e517e2d@redhat.com>
Date:   Fri, 13 Nov 2020 12:24:38 -0800
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
 Thunderbird/68.12.0
MIME-Version: 1.0
In-Reply-To: <1605204403-6663-2-git-send-email-richard.gong@linux.intel.com>
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
Content-Language: en-US
Precedence: bulk


On 11/12/20 10:06 AM, richard.gong@linux.intel.com wrote:
> From: Richard Gong <richard.gong@intel.com>
>
> Add FPGA_MGR_BITSTREM_AUTHENTICATION flag for FPGA bitstream
> authentication.

Should improve this commit so explain what you mean authentication.

it could mean 'it wrote correctly' or 'it was signed correctly' or something else.

>
> Signed-off-by: Richard Gong <richard.gong@intel.com>
> ---
>  include/linux/fpga/fpga-mgr.h | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/include/linux/fpga/fpga-mgr.h b/include/linux/fpga/fpga-mgr.h
> index 2bc3030..1d65814 100644
> --- a/include/linux/fpga/fpga-mgr.h
> +++ b/include/linux/fpga/fpga-mgr.h
> @@ -67,12 +67,15 @@ enum fpga_mgr_states {
>   * %FPGA_MGR_BITSTREAM_LSB_FIRST: SPI bitstream bit order is LSB first
>   *
>   * %FPGA_MGR_COMPRESSED_BITSTREAM: FPGA bitstream is compressed
> + *
> + * %FPGA_MGR_BITSTREM_AUTHENTICATION: do FPGA bitstream authentication
>   */
>  #define FPGA_MGR_PARTIAL_RECONFIG	BIT(0)
>  #define FPGA_MGR_EXTERNAL_CONFIG	BIT(1)
>  #define FPGA_MGR_ENCRYPTED_BITSTREAM	BIT(2)
>  #define FPGA_MGR_BITSTREAM_LSB_FIRST	BIT(3)
>  #define FPGA_MGR_COMPRESSED_BITSTREAM	BIT(4)
> +#define FPGA_MGR_BITSTREM_AUTHENTICATION BIT(5)

A whitespace issue, the new BIT(5) should align with the others, so add two spaces to the others.

Tom

>  
>  /**
>   * struct fpga_image_info - information specific to a FPGA image