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From:   Oleksandr Natalenko <oleksandr@redhat.com>
Date:   Mon, 22 Jun 2020 17:47:12 +0200
Message-ID: <CAHcwAbR1W_aOaozr=m48UCWKPr1m71bk-c+kwkGd6A2GTLGF6A@mail.gmail.com>
Subject: Re: mt7612 suspend/resume issue
To:     Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Cc:     Lorenzo Bianconi <lorenzo@kernel.org>,
        Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>,
        Felix Fietkau <nbd@nbd.name>,
        Ryder Lee <ryder.lee@mediatek.com>,
        Kalle Valo <kvalo@codeaurora.org>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
        linux-mediatek@lists.infradead.org,
        LKML <linux-kernel@vger.kernel.org>
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On Mon, Jun 22, 2020 at 4:53 PM Lorenzo Bianconi
<lorenzo.bianconi@redhat.com> wrote:
> > On Sun, Jun 21, 2020 at 10:54 PM Lorenzo Bianconi <lorenzo@kernel.org> wrote:
> > > > > +static int __maybe_unused
> > > > > +mt76x2e_suspend(struct pci_dev *pdev, pm_message_t state)
> > > > > +{
> > > > > +   struct mt76_dev *mdev = pci_get_drvdata(pdev);
> > > > > +   struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
> > > > > +   int i, err;
> > >
> > > can you please double-check what is the PCI state requested during suspend?
> >
> > Do you mean ACPI S3 (this is the state the system enters)?  If not,
> > what should I check and where?
>
> yes, right. Just for debugging, can you please force the card in PCI_D0 during the
> suspend?

Do you want me to do this:

diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/pci.c
b/drivers/net/wireless/mediatek/mt76/mt76x2/pci.c
index 5543e242fb9b..e558342cce03 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x2/pci.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x2/pci.c
@@ -119,9 +119,8 @@ mt76x2e_suspend(struct pci_dev *pdev, pm_message_t state)

     mt76x02_dma_reset(dev);

-    pci_enable_wake(pdev, pci_choose_state(pdev, state), true);
     pci_save_state(pdev);
-    err = pci_set_power_state(pdev, pci_choose_state(pdev, state));
+    err = pci_set_power_state(pdev, PCI_D0);
     if (err)
         goto restore;

?

-- 
  Best regards,
    Oleksandr Natalenko (post-factum)
    Principal Software Maintenance Engineer