linux-kernel - Re: [PATCH] usb: cdnsp: Fix incorrect status for control request

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Date:   Thu, 9 Dec 2021 19:34:08 +0800
From:   Peter Chen <peter.chen@...nel.org>
To:     Pawel Laszczak <pawell@...ence.com>
Cc:     gregkh@...uxfoundation.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, jianhe@...arella.com,
        stable@...r.kernel.org
Subject: Re: [PATCH] usb: cdnsp: Fix incorrect status for control request

On 21-12-07 10:18:38, Pawel Laszczak wrote:
> From: Pawel Laszczak <pawell@...ence.com>
> 
> Patch fixes incorrect status for control request.
> Without this fix all usb_request objects were returned to upper drivers
> with usb_reqest->status field set to -EINPROGRESS.
> 
> Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver")
> Reported-by: Ken (Jian) He <jianhe@...arella.com>
> cc: <stable@...r.kernel.org>
> Signed-off-by: Pawel Laszczak <pawell@...ence.com>
> ---
>  drivers/usb/cdns3/cdnsp-ring.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/usb/cdns3/cdnsp-ring.c b/drivers/usb/cdns3/cdnsp-ring.c
> index 1b1438457fb0..e8f5ecbb5c75 100644
> --- a/drivers/usb/cdns3/cdnsp-ring.c
> +++ b/drivers/usb/cdns3/cdnsp-ring.c
> @@ -1029,6 +1029,8 @@ static void cdnsp_process_ctrl_td(struct cdnsp_device *pdev,
>  		return;
>  	}
>  
> +	*status = 0;
> +
>  	cdnsp_finish_td(pdev, td, event, pep, status);
>  }
>  
> -- 
I think you may move *status = 0 at the beginning of
cdnsp_process_ctrl_td in case you would like to handle some error
conditions during this function.

-- 

Thanks,
Peter Chen