RE: [PATCH net-next 01/15] devlink: add value check to devlink_info_version_put()

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From: Nelson, Shannon <shannon.nelson@xxxxxxx> 
Sent: Tuesday, April 8, 2025 2:31 AM

>On 4/7/2025 2:51 PM, Tony Nguyen wrote:
>> From: Jedrzej Jagielski <jedrzej.jagielski@xxxxxxxxx>
>> 
>> Prevent from proceeding if there's nothing to print.
>> 
>> Suggested-by: Przemek Kitszel <przemyslaw.kitszel@xxxxxxxxx>
>> Reviewed-by: Jiri Pirko <jiri@xxxxxxxxxx>
>> Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@xxxxxxxxxxxx>
>> Tested-by: Bharath R <bharath.r@xxxxxxxxx>
>> Signed-off-by: Jedrzej Jagielski <jedrzej.jagielski@xxxxxxxxx>
>> Signed-off-by: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx>
>> ---
>>   net/devlink/dev.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>> 
>> diff --git a/net/devlink/dev.c b/net/devlink/dev.c
>> index d6e3db300acb..02602704bdea 100644
>> --- a/net/devlink/dev.c
>> +++ b/net/devlink/dev.c
>> @@ -775,7 +775,7 @@ static int devlink_info_version_put(struct devlink_info_req *req, int attr,
>>                  req->version_cb(version_name, version_type,
>>                                  req->version_cb_priv);
>> 
>> -       if (!req->msg)
>> +       if (!req->msg || !*version_value)
>
>Personally, I'd like to know that the value was blank if there was 
>normally a value to be printed.  This is removing a useful indicator of 
>something that might be wrong.
>
>sln


Actually this still works the same - when there is no entry that means
that the input was blank, so it still gives you some message.

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