Re: [PATCH v2] usb: dwc3: core: don't enable wakeup for runtime PM

[Greg KH <gregkh@linuxfoundation.org>]

On Wed, Mar 24, 2021 at 01:18:25PM +0800, Li Jun wrote:
> Don't enable dwc3 core to wakeup system by default if runtime suspended,
> this will make the power domain of dwc3 core or its parent device can't be
> off while system sleep even system wakeup by usb is not required.
> 
> Fixes: fc8bb91bc83e ("usb: dwc3: implement runtime PM")
> Cc: <Stable@vger.kernel.org>
> Signed-off-by: Li Jun <jun.li@nxp.com>
> ---
> Change for v2:
> - Add fix tag and cc to stable kernel.
> 
>  drivers/usb/dwc3/core.c | 4 ----
>  1 file changed, 4 deletions(-)
> 
> diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
> index 94fdbe502ce9..0bba5c21de56 100644
> --- a/drivers/usb/dwc3/core.c
> +++ b/drivers/usb/dwc3/core.c
> @@ -1840,8 +1840,6 @@ static int dwc3_runtime_suspend(struct device *dev)
>  	if (ret)
>  		return ret;
>  
> -	device_init_wakeup(dev, true);
> -
>  	return 0;
>  }
>  
> @@ -1850,8 +1848,6 @@ static int dwc3_runtime_resume(struct device *dev)
>  	struct dwc3     *dwc = dev_get_drvdata(dev);
>  	int		ret;
>  
> -	device_init_wakeup(dev, false);
> -
>  	ret = dwc3_resume_common(dwc, PMSG_AUTO_RESUME);
>  	if (ret)
>  		return ret;
> -- 
> 2.25.1
> 

Can I get some verification by other users of this driver that this
actually fixes something?  I find it odd it's not shown up yet to anyone
else...

thanks,

greg k-h