Re: [PATCH 1/2] can: dev: add can_len2dll_len()

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On 12/15/20 2:36 PM, Vincent MAILHOL wrote:
> On Mar 15 Dec. 2020 at 21:55, Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> wrote:
>>
>> Cc: Vincent Mailhol <mailhol.vincent@xxxxxxxxxx>
>> Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
>> ---
>>  drivers/net/can/dev.c   | 21 +++++++++++++++++++++
>>  include/linux/can/dev.h |  3 +++
>>  2 files changed, 24 insertions(+)
>>
>> diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c
>> index 68f37ac54327..fa81e3067b3b 100644
>> --- a/drivers/net/can/dev.c
>> +++ b/drivers/net/can/dev.c
>> @@ -60,6 +60,27 @@ u8 can_len2dlc(u8 len)
>>  }
>>  EXPORT_SYMBOL_GPL(can_len2dlc);
>>
>> +static const u8 len2dll_len[] = {
>> +       0, 1, 2, 3, 4, 5, 6, 7, 8,      /* 0 - 8 */
>> +       12, 12, 12, 12,                 /* 9 - 12 */
>> +       16, 16, 16, 16,                 /* 13 - 16 */
>> +       20, 20, 20, 20,                 /* 17 - 20 */
>> +       24, 24, 24, 24,                 /* 21 - 24 */
>> +       32, 32, 32, 32, 32, 32, 32, 32, /* 25 - 32 */
>> +       40, 40, 40, 40, 40, 40, 40, 40, /* 33 - 40 */
>> +       48, 48, 48, 48, 48, 48, 48, 48  /* 41 - 48 */
>> +};
> 
> I totally misunderstood what you wanted to do in my previous
> email. I thought that the numbers were placeholders and that
> the final goal was to take into account the CRC as you previously
> mentioned in your first email.

Sorry, should have been clearer about functionality of that table/function.

> This function is just here to sanitize the data length, right?
> Then we could simply name it can_fd_sanitize_len().

sanitized_len sounds good.

Thanks,
Marc

-- 
Pengutronix e.K.                 | Marc Kleine-Budde           |
Embedded Linux                   | https://www.pengutronix.de  |
Vertretung West/Dortmund         | Phone: +49-231-2826-924     |
Amtsgericht Hildesheim, HRA 2686 | Fax:   +49-5121-206917-5555 |

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