linux-kernel - Re: [PATCH v3] spi: spi-topcliff-pch: drop call to wakeup-disable

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Message-ID: <CAHp75VfdNJqviZgbsG5mQdFKVa_0Cu8nhT5L_hgKsgPB6gutoA@mail.gmail.com>
Date:   Mon, 27 Jul 2020 22:21:08 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Vaibhav Gupta <vaibhavgupta40@...il.com>
Cc:     Bjorn Helgaas <helgaas@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Bjorn Helgaas <bjorn@...gaas.com>,
        Vaibhav Gupta <vaibhav.varodek@...il.com>,
        Mark Brown <broonie@...nel.org>,
        linux-spi <linux-spi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH v3] spi: spi-topcliff-pch: drop call to wakeup-disable

On Mon, Jul 27, 2020 at 8:32 PM Vaibhav Gupta <vaibhavgupta40@...il.com> wrote:
>
> Before generic upgrade, both .suspend() and .resume() were invoking
> pci_enable_wake(pci_dev, PCI_D3hot, 0). Hence, disabling wakeup in both
> states. (Normal trend is .suspend() enables and .resume() disables the
> wakeup.)
>
> This was ambiguous and may be buggy. Instead of replicating the legacy
> behavior, drop the wakeup-disable call.

Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
Thanks!

> Fixes: f185bcc77980 ("spi: spi-topcliff-pch: use generic power management")
> Reported-by: Andy Shevchenko <andy.shevchenko@...il.com>
> Signed-off-by: Vaibhav Gupta <vaibhavgupta40@...il.com>
> ---
>  drivers/spi/spi-topcliff-pch.c | 2 --
>  1 file changed, 2 deletions(-)
>
> diff --git a/drivers/spi/spi-topcliff-pch.c b/drivers/spi/spi-topcliff-pch.c
> index 281a90f1b5d8..c73a03ddf5f3 100644
> --- a/drivers/spi/spi-topcliff-pch.c
> +++ b/drivers/spi/spi-topcliff-pch.c
> @@ -1648,8 +1648,6 @@ static int __maybe_unused pch_spi_resume(struct device *dev)
>
>         dev_dbg(dev, "%s ENTRY\n", __func__);
>
> -       device_wakeup_disable(dev);
> -
>         /* set suspend status to false */
>         pd_dev_save->board_dat->suspend_sts = false;
>
> --
> 2.27.0
>


-- 
With Best Regards,
Andy Shevchenko