linux-kernel - Re: [PATCH] usb: cdns3: gadget: reset EP

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Message-ID: <20191030030014.GD26815@b29397-desktop>
Date:   Wed, 30 Oct 2019 03:00:25 +0000
From:   Peter Chen <peter.chen@....com>
To:     Sanket Parmar <sparmar@...ence.com>
CC:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "felipe.balbi@...ux.intel.com" <felipe.balbi@...ux.intel.com>,
        "pawell@...ence.com" <pawell@...ence.com>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "rogerq@...com" <rogerq@...com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kurahul@...ence.com" <kurahul@...ence.com>,
        "nsekhar@...com" <nsekhar@...com>
Subject: Re: [PATCH] usb: cdns3: gadget: reset EP_CLAIMED flag while unloading

On 19-10-29 12:24:41, Sanket Parmar wrote:
> EP_CLAIMED flag is used to track the claimed endpoints. While unloading the
> module, Reset EP_CLAIMED flag for all enabled endpoints. So that it can be
> reused.
> 
> Signed-off-by: Sanket Parmar <sparmar@...ence.com>
> ---
> Hi Greg/Felipe,
> 
> This can be used for -rc as it is bug fix.
> 
> Regards,
> Sanket
> 
>  drivers/usb/cdns3/gadget.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/usb/cdns3/gadget.c b/drivers/usb/cdns3/gadget.c
> index 9050b380ab83..2fb78322ed3c 100644
> --- a/drivers/usb/cdns3/gadget.c
> +++ b/drivers/usb/cdns3/gadget.c
> @@ -2381,6 +2381,8 @@ static int cdns3_gadget_udc_stop(struct usb_gadget *gadget)
>  		writel(EP_CMD_EPRST, &priv_dev->regs->ep_cmd);
>  		readl_poll_timeout_atomic(&priv_dev->regs->ep_cmd, val,
>  					  !(val & EP_CMD_EPRST), 1, 100);
> +
> +		priv_ep->flags &= ~EP_CLAIMED;
>  	}
>  
>  	/* disable interrupt for device */
> -- 

Acked-by: Peter Chen <peter.chen@....com>

-- 

Thanks,
Peter Chen