[PATCH 1/6] net: macb: use dummy descriptor for RBQP

[Eugen.Hristev at microchip.com]

On 16.12.2020 09:17, Bin Meng wrote:
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> 
> Hi Eugen,
> 
> On Wed, Dec 16, 2020 at 2:55 PM <Eugen.Hristev at microchip.com> wrote:
>>
>> On 03.12.2020 11:25, Claudiu Beznea wrote:
>>> In case of multiple queues on RX side the queue scheduler
>>> will try to use all the available configured queues (with
>>> descriptors having TX_USED bit cleared). If at least one RBQP
>>> points to a descriptor with a valid used bit configuration then
>>> the reception may block as this may point to any memory. To avoid
>>> this scenario all the queues (except queue zero) were disabled by
>>> setting DMA descriptors with used bit set on proper RBQP. The driver
>>> anyway uses only queue 0 for TX/RX.
>>>
>>> Signed-off-by: Claudiu Beznea <claudiu.beznea at microchip.com>
>>> ---
>>
>> Hi Anup, Bin, Padmarao,
>>
>> I noticed on the mailing list that you have been actively working and
>> testing the Macb driver on various platforms, we have this series
>> outstanding and I want to make sure that it does not break anything on
>> your side, so it would be appreciated if you could have a look or test
>> it before it goes into master branch.
>>
> 
> Is this series for Microchip PolarFire SoC?

No, but this series affects the macb driver, and because other platforms 
use it, I do not wish to have a chance to break them.
> 
> Regards,
> Bin
>