linux-kernel - Re: [PATCH] xen: check return value of xenbus

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Message-ID: <20151016000124.GA1794@dtor-ws>
Date:	Thu, 15 Oct 2015 17:01:24 -0700
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Insu Yun <wuninsu@...il.com>
Cc:	david.vrabel@...rix.com, wei.liu2@...rix.com,
	julien.grall@...rix.com, stefano.stabellini@...citrix.com,
	huaixin.chx@...baba-inc.com, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org, taesoo@...ech.edu,
	yeongjin.jang@...ech.edu, insu@...ech.edu
Subject: Re: [PATCH] xen: check return value of xenbus_printf

Hi Insu,

On Thu, Oct 15, 2015 at 06:40:12PM +0000, Insu Yun wrote:
> Signed-off-by: Insu Yun <wuninsu@...il.com>

It looks lik eyou lost your patch description when respinning.

Thanks.

> ---
>  drivers/input/misc/xen-kbdfront.c | 10 ++++++++--
>  1 file changed, 8 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/input/misc/xen-kbdfront.c b/drivers/input/misc/xen-kbdfront.c
> index 23d0549..9d465d7 100644
> --- a/drivers/input/misc/xen-kbdfront.c
> +++ b/drivers/input/misc/xen-kbdfront.c
> @@ -129,8 +129,14 @@ static int xenkbd_probe(struct xenbus_device *dev,
>  
>  	if (xenbus_scanf(XBT_NIL, dev->otherend, "feature-abs-pointer", "%d", &abs) < 0)
>  		abs = 0;
> -	if (abs)
> -		xenbus_printf(XBT_NIL, dev->nodename, "request-abs-pointer", "1");
> +	if (abs) {
> +		ret = xenbus_printf(XBT_NIL, dev->nodename,
> +					"request-abs-pointer", "1");
> +		if (ret) {
> +			pr_warning("xenkbd: can't request abs-pointer");
> +			abs = 0;
> +		}
> +	}
>  
>  	/* keyboard */
>  	kbd = input_allocate_device();
> -- 
> 1.9.1
> 

-- 
Dmitry
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