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Date:   Tue, 7 Jan 2020 08:23:54 +0100
From:   Jean-Philippe Brucker <jean-philippe@...aro.org>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Arend Van Spriel <arend.vanspriel@...adcom.com>,
        linux-wireless@...r.kernel.org,
        brcm80211-dev-list.pdl@...adcom.com,
        brcm80211-dev-list@...ress.com, netdev@...r.kernel.org,
        hdegoede@...hat.com, franky.lin@...adcom.com,
        hante.meuleman@...adcom.com, chi-hsien.lin@...ress.com,
        wright.feng@...ress.com, kvalo@...eaurora.org, davem@...emloft.net
Subject: Re: [PATCH] brcmfmac: sdio: Fix OOB interrupt initialization on
 brcm43362

On Tue, Jan 07, 2020 at 02:15:18AM +0300, Dmitry Osipenko wrote:
> 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?

I applied [1] without the snippet

Thanks,
Jean

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

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