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Message-ID: <e215f254-dd97-105c-fe2d-0ec786ea50ef@codethink.co.uk>
Date:   Tue, 24 Nov 2020 10:32:21 +0000
From:   Milan Lakhani <milan.lakhani@...ethink.co.uk>
To:     Lukas Bulwahn <lukas.bulwahn@...il.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-safety@...ts.elisa.tech
Subject: Re: [linux-safety] [PATCH 2/2] staging: vt6655: Correct wrappping in
 rxtx.c

Hi Lukas,

On 23/11/2020 13:17, Lukas Bulwahn wrote:

> On Mon, Nov 23, 2020 at 12:59 PM Milan Lakhani
> <milan.lakhani@...ethink.co.uk> wrote:
>> Correct line length and alignment in rxtx.c. Reported by checkpatch.
>>
>> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
>> Cc: Forest Bond <forest@...ttletooquiet.net>
>> CC: linux-kernel@...r.kernel.org
>> CC: linux-safety@...ts.elisa.tech
> Milan, I am wondering where you picked up this convention to add these
> Cc: and CC: tags in your patch?
>
> Is there some documentation that points out to do that? (That might
> need to be fixed...)
>
> Did you observe that on some other commits? I think these tags are
> added by some maintainers (probably tool-supported) when they pick the
> patches, not by the authors, though.

I'm using git send-email to send patches and, as described in the 
'Sending patches with git send-email' section on 
https://kernelnewbies.org/FirstKernelPatch, git-send-email automatically 
Ccs people with the the Cc and CC tags. I did see this in other commits 
too, maybe they're used by the authors to pick out the maintainers to 
send the patches to?

>
>> Signed-off-by: Milan Lakhani <milan.lakhani@...ethink.co.uk>
>> ---
>>   drivers/staging/vt6655/rxtx.c | 63 +++++++++++++++++++++++++++++++++----------
>>   1 file changed, 49 insertions(+), 14 deletions(-)
>>
>> diff --git a/drivers/staging/vt6655/rxtx.c b/drivers/staging/vt6655/rxtx.c
>> index 508e1bd..4073c33 100644
>> --- a/drivers/staging/vt6655/rxtx.c
>> +++ b/drivers/staging/vt6655/rxtx.c
>> @@ -492,14 +492,29 @@ s_uFillDataHead(
>>                                    pDevice->byTopCCKBasicRate,
>>                                    PK_TYPE_11B, &buf->b);
>>                  /* Get Duration and TimeStamp */
>> -               buf->duration_a = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_A, cbFrameLength, byPktType,
>> -                                                                     wCurrentRate, bNeedAck, uFragIdx, cbLastFragmentSize, uMACfragNum, byFBOption));
>> -               buf->duration_b = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_B, cbFrameLength, PK_TYPE_11B,
>> -                                                                      pDevice->byTopCCKBasicRate, bNeedAck, uFragIdx, cbLastFragmentSize, uMACfragNum, byFBOption));
>> -               buf->duration_a_f0 = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_A_F0, cbFrameLength, byPktType,
>> -                                                                         wCurrentRate, bNeedAck, uFragIdx, cbLastFragmentSize, uMACfragNum, byFBOption));
>> -               buf->duration_a_f1 = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_A_F1, cbFrameLength, byPktType,
>> -                                                                        wCurrentRate, bNeedAck, uFragIdx, cbLastFragmentSize, uMACfragNum, byFBOption));
>> +               buf->duration_a = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_A,
>> +                                                                     cbFrameLength, byPktType,
>> +                                                                     wCurrentRate, bNeedAck,
>> +                                                                     uFragIdx, cbLastFragmentSize,
>> +                                                                     uMACfragNum, byFBOption));
>> +               buf->duration_b = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_B,
>> +                                                                     cbFrameLength, PK_TYPE_11B,
>> +                                                                     pDevice->byTopCCKBasicRate,
>> +                                                                     bNeedAck, uFragIdx,
>> +                                                                     cbLastFragmentSize,
>> +                                                                     uMACfragNum, byFBOption));
>> +               buf->duration_a_f0 = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_A_F0,
>> +                                                                        cbFrameLength, byPktType,
>> +                                                                        wCurrentRate, bNeedAck,
>> +                                                                        uFragIdx,
>> +                                                                        cbLastFragmentSize,
>> +                                                                        uMACfragNum, byFBOption));
>> +               buf->duration_a_f1 = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_A_F1,
>> +                                                                        cbFrameLength, byPktType,
>> +                                                                        wCurrentRate, bNeedAck,
>> +                                                                        uFragIdx,
>> +                                                                        cbLastFragmentSize,
>> +                                                                        uMACfragNum, byFBOption));
>>
> Now to this change... it seems reasonable to refactor this into a
> dedicated function or macro because this is largely "copy-and-paste"
> calls with slight variable on a single argument.
>
> How about proposing such a change instead?
Thanks, good idea, I have made a macro for it and am about to send the 
patch, it would be good to hear if it is what you were envisaging.
>>                  buf->time_stamp_off_a = vnt_time_stamp_off(pDevice, wCurrentRate);
>>                  buf->time_stamp_off_b = vnt_time_stamp_off(pDevice, pDevice->byTopCCKBasicRate);
>> @@ -517,12 +532,32 @@ s_uFillDataHead(
>>                                            byPktType, &buf->a);
>>
>>                          /* Get Duration and TimeStampOff */
>> -                       buf->duration = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_A, cbFrameLength, byPktType,
>> -                                                                           wCurrentRate, bNeedAck, uFragIdx, cbLastFragmentSize, uMACfragNum, byFBOption));
>> -                       buf->duration_f0 = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_A_F0, cbFrameLength, byPktType,
>> -                                                                              wCurrentRate, bNeedAck, uFragIdx, cbLastFragmentSize, uMACfragNum, byFBOption));
>> -                       buf->duration_f1 = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_A_F1, cbFrameLength, byPktType,
>> -                                                                               wCurrentRate, bNeedAck, uFragIdx, cbLastFragmentSize, uMACfragNum, byFBOption));
>> +                       buf->duration = cpu_to_le16((u16)s_uGetDataDuration(pDevice, DATADUR_A,
>> +                                                                           cbFrameLength,
>> +                                                                           byPktType,
>> +                                                                           wCurrentRate, bNeedAck,
>> +                                                                           uFragIdx,
>> +                                                                           cbLastFragmentSize,
>> +                                                                           uMACfragNum,
>> +                                                                           byFBOption));
>> +                       buf->duration_f0 = cpu_to_le16((u16)s_uGetDataDuration(pDevice,
>> +                                                                              DATADUR_A_F0,
>> +                                                                              cbFrameLength,
>> +                                                                              byPktType,
>> +                                                                              wCurrentRate,
>> +                                                                              bNeedAck, uFragIdx,
>> +                                                                              cbLastFragmentSize,
>> +                                                                              uMACfragNum,
>> +                                                                              byFBOption));
>> +                       buf->duration_f1 = cpu_to_le16((u16)s_uGetDataDuration(pDevice,
>> +                                                                              DATADUR_A_F1,
>> +                                                                              cbFrameLength,
>> +                                                                              byPktType,
>> +                                                                              wCurrentRate,
>> +                                                                              bNeedAck, uFragIdx,
>> +                                                                              cbLastFragmentSize,
>> +                                                                              uMACfragNum,
>> +                                                                              byFBOption));
>>                          buf->time_stamp_off = vnt_time_stamp_off(pDevice, wCurrentRate);
>>                          return buf->duration;
>>                  }
>> --
>> 2.7.4
>>
>>
>>
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