[Suggestion] drivers: staging: dgrp: dgrp_net_ops.c: 'buf' is used without initialized.

Chen Gang gang.chen.5i5j at gmail.com
Sat Feb 1 06:11:36 UTC 2014

After check, for me, reverting is OK enough. I did not find issues of
original implementation (related things look reasonable to me).

Original implementation really needs re-factor (but it is not urgent).
If we perform re-factor, for me, we need:

 - check all variables and parameters real using wide in this function.
     'b', 'buf', 'remain' are global wide within this function.
     'plen', 'ch' can be defined within 'while()'.
     'dbuf', 'dlen' can be defined within 'case' (but broken by 'goto').

 - separate all easy (more independent) blocks to another functions.
   that will let the main code smaller (e.g from 1000 to 200 lines).

 - after simplifies all things, process 'goto' statement.

And excuse me, I have no related environments to perform the test after
re-factor, so welcome any other members to help re-factor and perform a

Welcome any additional suggestions, discussions and completions.


On 01/25/2014 06:45 PM, Chen Gang wrote:
> On 01/23/2014 11:16 PM, Dan Carpenter wrote:
>> On Tue, Dec 10, 2013 at 01:05:46PM +0300, Dan Carpenter wrote:
>>> On Tue, Dec 10, 2013 at 03:27:55PM +0530, Rashika Kheria wrote:
>>>> Should I attempt to rectify the code in handle_data_in_packet() ?
>>> Yes, please.
>> What ever happened with this?
> Sorry, I don't known.
>> It sort of too late now and I think we should just revert b73db5475048
>> ('Staging: dgrp: Refactor the function dgrp_receive() in
>> drrp_net_ops.c')
> For me, it is necessary to revert firstly.
> I have started this 'Suggestion', so if still can not get response from
> related members, I will/should process it (after revert it, I will
> analyse it and try to provide a new fix for it).
> And really sorry, I have no enough time resources to focus on upstream
> kernel in this month, so I plan to finish it within next month (2014-02-28).
> BTW: my current related time resources are:
>   2014-01: make driver, user mode library, and Java demo under android.
>   In Chinese Festival, I have time resource to upstream kernel and qemu.
>   2014-02: migrate diver, library, and develop an obj-C demo to iphone.
> Thanks.

Chen Gang

Open, share and attitude like air, water and life which God blessed

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