linux-kernel - Re: [PATCH] Input: uinput - Allow uinput

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Date:   Mon, 18 Feb 2019 15:21:10 +0100
From:   Rodrigo Rivas Costa <rodrigorivascosta@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     dmitry.torokhov@...il.com, rodrigorivascosta@...il.com,
        Marcos Paulo de Souza <marcos.souza.org@...il.com>,
        Peter Hutterer <peter.hutterer@...-t.net>,
        "Paul E. McKenney" <paulmck@...ux.ibm.com>,
        Martin Kepplinger <martink@...teo.de>,
        "open list:INPUT (KEYBOARD, MOUSE, JOYSTICK, TOUCHSCREEN)" 
        <linux-input@...r.kernel.org>
Subject: Re: [PATCH] Input: uinput - Allow uinput_request to be interrupted

On Sun, Feb 17, 2019 at 09:42:52PM -0300, Marcos Paulo de Souza wrote:
> -	if (!wait_for_completion_timeout(&request->done, 30 * HZ)) {
> +	if (!wait_for_completion_interruptible_timeout(&request->done,
> +							30 * HZ)) {
>  		retval = -ETIMEDOUT;
>  		goto out;
>  	}

Now this function can succeed or fail because of ETIMEDOUT or an
interrupt. I think you should return -EINTR or maybe -ESYSRESTART if
interrupted.