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

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Message-ID: <8736fafomi.fsf@gmail.com>
Date:   Wed, 30 Oct 2019 13:40:05 +0200
From:   Felipe Balbi <felipe.balbi@...ux.intel.com>
To:     Sanket Parmar <sparmar@...ence.com>, gregkh@...uxfoundation.org
Cc:     sparmar@...ence.com, pawell@...ence.com, linux-usb@...r.kernel.org,
        rogerq@...com, linux-kernel@...r.kernel.org, kurahul@...ence.com,
        peter.chen@....com, nsekhar@...com
Subject: Re: [PATCH] usb: cdns3: gadget: reset EP_CLAIMED flag while unloading


Hi Greg,

Sanket Parmar <sparmar@...ence.com> writes:

> 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>

if you want to take this as a patch:

Acked-by: Felipe Balbi <balbi@...nel.org>

> ---
> 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 */
> -- 
> 2.17.1
>

-- 
balbi