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Subject: Re: [PATCH 10/10] staging: r8188eu: set pipe only once
To:     Martin Kaiser <martin@kaiser.cx>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     Larry Finger <Larry.Finger@lwfinger.net>,
        Phillip Potter <phil@philpotter.co.uk>,
        Dan Carpenter <dan.carpenter@oracle.com>,
        linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org
References: <20210821164859.4351-1-martin@kaiser.cx>
 <20210821164859.4351-10-martin@kaiser.cx>
From:   Michael Straube <straube.linux@gmail.com>
Message-ID: <088d6fbb-b231-e669-1f0d-5adea7ac4685@gmail.com>
Date:   Sun, 22 Aug 2021 16:05:12 +0200
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On 8/21/21 6:48 PM, Martin Kaiser wrote:
> Set the pipe for reading or writing in usbctrl_vendorreq only once.
> There's no need to set it again for every retry.
> 
> This patch is an adaptation of commit 889ed8b5e374 ("staging: rtl8188eu:
> set pipe only once") for the new r8188eu driver.
> 
> Signed-off-by: Martin Kaiser <martin@kaiser.cx>
> ---
>   drivers/staging/r8188eu/hal/usb_ops_linux.c | 15 ++++++++-------
>   1 file changed, 8 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/staging/r8188eu/hal/usb_ops_linux.c b/drivers/staging/r8188eu/hal/usb_ops_linux.c
> index 5408383ccec3..5a55ee38d7b8 100644
> --- a/drivers/staging/r8188eu/hal/usb_ops_linux.c
> +++ b/drivers/staging/r8188eu/hal/usb_ops_linux.c
> @@ -40,15 +40,16 @@ static int usbctrl_vendorreq(struct intf_hdl *pintfhdl, u16 value, void *pdata,
>   		goto release_mutex;
>   	}
>   
> -	while (++vendorreq_times <= MAX_USBCTRL_VENDORREQ_TIMES) {
> -		memset(pIo_buf, 0, len);
> +	if (requesttype == REALTEK_USB_VENQT_READ)
> +		pipe = usb_rcvctrlpipe(udev, 0);/* read_in */
> +	else
> +		pipe = usb_sndctrlpipe(udev, 0);/* write_out */
>   
> -		if (requesttype == REALTEK_USB_VENQT_READ) {
> -			pipe = usb_rcvctrlpipe(udev, 0);/* read_in */
> -		} else {
> -			pipe = usb_sndctrlpipe(udev, 0);/* write_out */
> +	while (++vendorreq_times <= MAX_USBCTRL_VENDORREQ_TIMES) {
> +		if (requesttype == REALTEK_USB_VENQT_READ)
> +			memset(pIo_buf, 0, len);
> +		else
>   			memcpy(pIo_buf, pdata, len);
> -		}
>   
>   		status = usb_control_msg(udev, pipe, REALTEK_USB_VENQT_CMD_REQ,
>   					 requesttype, value, REALTEK_USB_VENQT_CMD_IDX,
> 

Looks good to me.

Acked-by: Michael Straube <straube.linux@gmail.com>

Thanks,
Michael