linux-kernel - Re: [PATCH AUTOSEL 5.12 16/79] usb: dwc3: gadget: Remove invalid low-speed setting

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Date:   Sun, 2 May 2021 16:56:11 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Sasha Levin <sashal@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        linux-usb@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 5.12 16/79] usb: dwc3: gadget: Remove invalid
 low-speed setting

On Sun, May 02, 2021 at 10:02:13AM -0400, Sasha Levin wrote:
> From: Thinh Nguyen <Thinh.Nguyen@...opsys.com>
> 
> [ Upstream commit 0c59f678fcfc6dd53ba493915794636a230bc4cc ]
> 
> None of the DWC_usb3x IPs (and all their versions) supports low-speed
> setting in device mode. In the early days, our "Early Adopter Edition"
> DWC_usb3 databook shows that the controller may be configured to operate
> in low-speed, but it was revised on release. Let's remove this invalid
> speed setting to avoid any confusion.
> 
> Signed-off-by: Thinh Nguyen <Thinh.Nguyen@...opsys.com>
> Link: https://lore.kernel.org/r/258b1c7fbb966454f4c4c2c1367508998498fc30.1615509438.git.Thinh.Nguyen@synopsys.com
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Signed-off-by: Sasha Levin <sashal@...nel.org>
> ---
>  drivers/usb/dwc3/core.c   | 1 -
>  drivers/usb/dwc3/core.h   | 2 --
>  drivers/usb/dwc3/gadget.c | 8 --------
>  3 files changed, 11 deletions(-)

This is a "cleanup only" and does not fix or solve anything, so it can
be dropped from all of the kernels it has been "autoselected" for.

thanks,

greg k-h