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Message-ID: <5082d743-54b1-7b4c-432c-dfdce1bb772a@kernel.org>
Date:   Mon, 15 May 2023 14:01:08 +0300
From:   Roger Quadros <rogerq@...nel.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>, Greg KH <greg@...ah.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Krishna Kurapati <quic_kriskura@...cinc.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: manual merge of the usb tree with the usb.current
 tree

Hi Stephen,

On 15/05/2023 05:35, Stephen Rothwell wrote:
> Hi all,
> 
> Today's linux-next merge of the usb tree got a conflict in:
> 
>   drivers/usb/dwc3/gadget.c
> 
> between commit:
> 
>   c8540870af4c ("usb: dwc3: gadget: Improve dwc3_gadget_suspend() and dwc3_gadget_resume()")
> 
> from the usb.current tree and commit:
> 
>   813f44d57e19 ("usb: dwc3: gadget: Bail out in pullup if soft reset timeout happens")
> 
> from the usb tree.
> 
> I fixed it up (I think - see below) and can carry the fix as
> necessary. This is now fixed as far as linux-next is concerned, but any
> non trivial conflicts should be mentioned to your upstream maintainer
> when your tree is submitted for merging.  You may also want to consider
> cooperating with the maintainer of the conflicting tree to minimise any
> particularly complex conflicts.
> 

> diff --cc drivers/usb/dwc3/gadget.c
> index d831f5acf7b5,5965796bc5d5..000000000000
> --- a/drivers/usb/dwc3/gadget.c
> +++ b/drivers/usb/dwc3/gadget.c
> @@@ -2700,21 -2699,6 +2700,26 @@@ static int dwc3_gadget_soft_disconnect(
>   	return ret;
>   }
>   
>  +static int dwc3_gadget_soft_connect(struct dwc3 *dwc)
>  +{
> ++	int	ret;
> ++
>  +	/*
>  +	 * In the Synopsys DWC_usb31 1.90a programming guide section
>  +	 * 4.1.9, it specifies that for a reconnect after a
>  +	 * device-initiated disconnect requires a core soft reset
>  +	 * (DCTL.CSftRst) before enabling the run/stop bit.
>  +	 */
>  +	dwc3_core_soft_reset(dwc);

Please drop above call to dwc3_core_soft_reset().

> ++	ret = dwc3_core_soft_reset(dwc);
> ++	if (ret)
> ++		return ret;
>  +
>  +	dwc3_event_buffers_setup(dwc);
>  +	__dwc3_gadget_start(dwc);
>  +	return dwc3_gadget_run_stop(dwc, true);
>  +}
>  +
>   static int dwc3_gadget_pullup(struct usb_gadget *g, int is_on)
>   {
>   	struct dwc3		*dwc = gadget_to_dwc(g);

-- 
cheers,
-roger

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