linux-kernel - Re: [PATCH 3/6] mei: vsc: Enhance SPI transfer of IVSC rom

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Date: Sun, 23 Jun 2024 10:09:27 +0000
From: Sakari Ailus <sakari.ailus@...ux.intel.com>
To: Wentong Wu <wentong.wu@...el.com>
Cc: tomas.winkler@...el.com, gregkh@...uxfoundation.org,
	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	Jason Chen <jason.z.chen@...el.com>
Subject: Re: [PATCH 3/6] mei: vsc: Enhance SPI transfer of IVSC rom

Hi Wentong,

On Sun, Jun 23, 2024 at 05:30:53PM +0800, Wentong Wu wrote:
> Constructing the SPI transfer command as per the specific request.
> 
> Fixes: 566f5ca97680 ("mei: Add transport driver for IVSC device")
> Cc: stable@...r.kernel.org # for 6.8+
> Signed-off-by: Wentong Wu <wentong.wu@...el.com>
> Tested-by: Jason Chen <jason.z.chen@...el.com>
> ---
>  drivers/misc/mei/vsc-tp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/misc/mei/vsc-tp.c b/drivers/misc/mei/vsc-tp.c
> index 4595b1a25536..7a89e4e5d553 100644
> --- a/drivers/misc/mei/vsc-tp.c
> +++ b/drivers/misc/mei/vsc-tp.c
> @@ -331,7 +331,7 @@ int vsc_tp_rom_xfer(struct vsc_tp *tp, const void *obuf, void *ibuf, size_t len)
>  		return ret;
>  	}
>  
> -	ret = vsc_tp_dev_xfer(tp, tp->tx_buf, tp->rx_buf, len);
> +	ret = vsc_tp_dev_xfer(tp, tp->tx_buf, ibuf ? tp->rx_buf : ibuf, len);

Is this correct? I.e. use ibuf when it's NULL, otherwise use tp->rx_buf?

>  	if (ret)
>  		return ret;
>  

-- 
Kind regards,

Sakari Ailus