linux-kernel - Re: [PATCH AUTOSEL 5.7 229/388] usb/ohci-platform: Fix a warning when hibernating

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Date:   Thu, 18 Jun 2020 10:56:01 +0100
From:   Qais Yousef <qais.yousef@....com>
To:     Sasha Levin <sashal@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Alan Stern <stern@...land.harvard.edu>,
        Tony Prisk <linux@...sktech.co.nz>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Oliver Neukum <oneukum@...e.de>,
        linux-arm-kernel@...ts.infradead.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 5.7 229/388] usb/ohci-platform: Fix a warning
 when hibernating

Hi Sasha/Alan

On 06/17/20 21:05, Sasha Levin wrote:

[...]

> diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c
> index 7addfc2cbadc..4a8456f12a73 100644
> --- a/drivers/usb/host/ohci-platform.c
> +++ b/drivers/usb/host/ohci-platform.c
> @@ -299,6 +299,11 @@ static int ohci_platform_resume(struct device *dev)
>  	}
>  
>  	ohci_resume(hcd, false);
> +
> +	pm_runtime_disable(dev);
> +	pm_runtime_set_active(dev);
> +	pm_runtime_enable(dev);
> +

I am not sure what's the protocol here, but the series was fixing similar
problems to this driver but I didn't myself directly observe a warning because
of that.

https://lore.kernel.org/lkml/20200518154931.6144-2-qais.yousef@arm.com/
https://lore.kernel.org/lkml/20200518154931.6144-3-qais.yousef@arm.com/

So just pointing it out in case they're worth backporting to stable too.

Thanks

--
Qais Yousef