netdev - Re: [PATCH v3 net-next 01/11] net: stmmac: prepare dma op mode config for multiple queues

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Message-ID: <CAHp75Vc1YeD9DvwVLh7U1CtDWRGpm-zQSbf4d8C=skLcf_ucBg@mail.gmail.com>
Date:   Mon, 8 May 2017 14:56:10 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Joao Pinto <Joao.Pinto@...opsys.com>
Cc:     Jan Kiszka <jan.kiszka@...mens.com>,
        "David S. Miller" <davem@...emloft.net>,
        Giuseppe CAVALLARO <peppe.cavallaro@...com>,
        Alexandre TORGUE <alexandre.torgue@...com>,
        netdev <netdev@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 net-next 01/11] net: stmmac: prepare dma op mode config
 for multiple queues

On Mon, May 8, 2017 at 2:40 PM, Joao Pinto <Joao.Pinto@...opsys.com> wrote:
> Às 12:34 PM de 5/8/2017, Andy Shevchenko escreveu:
>> On Mon, May 8, 2017 at 1:42 PM, Joao Pinto <Joao.Pinto@...opsys.com> wrote:
>>> Às 11:12 AM de 5/8/2017, Andy Shevchenko escreveu:
>>>> On Mon, May 8, 2017 at 12:54 PM, Joao Pinto <Joao.Pinto@...opsys.com> wrote:
>>>>> Às 10:36 AM de 5/8/2017, Andy Shevchenko escreveu:

>>
>> [   44.374161] stmmac_dvr_probe <<< 0 0
>>
>
> Ok, so this is the cause of the problem. The driver is geting 0 for real RX and
> TX queues.
>
> Your setup uses standard DT parsing from stmmac_platform or a custom one?
>
> If you are using stmmac_probe_config_dt():
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c#n363
>
> You will find a function named stmmac_mtl_setup() being called:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c#n492
>
> In this function, the number of RX and TX queues is being set to 1 by default.

Ah-ha, now I know how it's happened.
You forget to update all setup() hooks in PCI bus driver :-)

I will prepare a fix.
Just tell me should I put Fixes tag or not? And if yes, what commit
should I refer to?

-- 
With Best Regards,
Andy Shevchenko