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Subject: Re: [PATCH] brcmfmac: sdio: Fix OOB interrupt initialization on
 brcm43362
To:     Jean-Philippe Brucker <jean-philippe@linaro.org>
Cc:     Arend Van Spriel <arend.vanspriel@broadcom.com>,
        linux-wireless@vger.kernel.org,
        brcm80211-dev-list.pdl@broadcom.com,
        brcm80211-dev-list@cypress.com, netdev@vger.kernel.org,
        hdegoede@redhat.com, franky.lin@broadcom.com,
        hante.meuleman@broadcom.com, chi-hsien.lin@cypress.com,
        wright.feng@cypress.com, kvalo@codeaurora.org, davem@davemloft.net
References: <20191226092033.12600-1-jean-philippe@linaro.org>
 <16f419a7070.279b.9b12b7fc0a3841636cfb5e919b41b954@broadcom.com>
 <141f055a-cd1d-66cb-7052-007cda629d3a@gmail.com>
 <20200106191919.GA826263@myrica>
From:   Dmitry Osipenko <digetx@gmail.com>
Message-ID: <c2bb1067-9b9c-3be1-b87e-e733a668a056@gmail.com>
Date:   Tue, 7 Jan 2020 02:15:18 +0300
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06.01.2020 22:19, Jean-Philippe Brucker пишет:
> Hi Dmitry,
> 
> On Thu, Dec 26, 2019 at 05:37:58PM +0300, Dmitry Osipenko wrote:
>> I haven't seen any driver probe failures due to OOB on NVIDIA Tegra,
>> only suspend-resume was problematic due to the unbalanced OOB
>> interrupt-wake enabling.
>>
>> But maybe checking whether OOB interrupt-wake works by invoking
>> enable_irq_wake() during brcmf_sdiod_intr_register() causes trouble for
>> the cubietruck board.
>>
>> @Jean-Philippe, could you please try this change (on top of recent
>> linux-next):
> 
> Sorry for the delay, linux-next doesn't boot for me at the moment and I
> have little time to investigate why, so I might retry closer to the merge
> window.
> 
> However, isn't the interrupt-wake issue independent from the problem
> (introduced in v4.17) that my patch fixes? I applied "brcmfmac: Keep OOB
> wake-interrupt disabled when it shouldn't be enabled" on v5.5-rc5 and it
> doesn't seem to cause a regression, but the wifi only works if I apply my
> patch as well.
> 
> Thanks,
> Jean
> 
>>
>> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
>> b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
>> index b684a5b6d904..80d7106b10a9 100644
>> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
>> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
>> @@ -115,13 +115,6 @@ int brcmf_sdiod_intr_register(struct brcmf_sdio_dev
>> *sdiodev)
>>                 }
>>                 sdiodev->oob_irq_requested = true;
>>
>> -               ret = enable_irq_wake(pdata->oob_irq_nr);
>> -               if (ret != 0) {
>> -                       brcmf_err("enable_irq_wake failed %d\n", ret);
>> -                       return ret;
>> -               }
>> -               disable_irq_wake(pdata->oob_irq_nr);
>> -
>>                 sdio_claim_host(sdiodev->func1);
>>
>>                 if (sdiodev->bus_if->chip == BRCM_CC_43362_CHIP_ID) {

Hello Jean,

Could you please clarify whether you applied [1] and then the above
snippet on top of it or you only applied [1] without the snippet?

[1] brcmfmac: Keep OOB wake-interrupt disabled when it shouldn't be enabled