linux-kernel - Re: [PATCH v7] usb: dwc3: core: Workaround for CSR read timeout

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Date: Fri, 21 Jun 2024 09:40:10 +0800
From: joswang <joswang1221@...il.com>
To: Greg KH <gregkh@...uxfoundation.org>, Thinh Nguyen <Thinh.Nguyen@...opsys.com>
Cc: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org, 
	stable@...r.kernel.org, Jos Wang <joswang@...ovo.com>
Subject: Re: [PATCH v7] usb: dwc3: core: Workaround for CSR read timeout

On Fri, Jun 21, 2024 at 1:16 AM Greg KH <gregkh@...uxfoundation.org> wrote:
>
> On Wed, Jun 19, 2024 at 07:45:29PM +0800, joswang wrote:
> > From: Jos Wang <joswang@...ovo.com>
> >
> > This is a workaround for STAR 4846132, which only affects
> > DWC_usb31 version2.00a operating in host mode.
> >
> > There is a problem in DWC_usb31 version 2.00a operating
> > in host mode that would cause a CSR read timeout When CSR
> > read coincides with RAM Clock Gating Entry. By disable
> > Clock Gating, sacrificing power consumption for normal
> > operation.
> >
> > Cc: stable@...r.kernel.org
> > Signed-off-by: Jos Wang <joswang@...ovo.com>
>
> What commit id does this fix?  How far back should it be backported in
> the stable releases?
>
> thanks,
>
> greg k-h

Hello Greg Thinh

It seems first begin from the commit 1e43c86d84fb ("usb: dwc3: core:
Add DWC31 version 2.00a controller")
in 6.8.0-rc6 branch ?

Thanks

Jos Wang