linux-kernel - Re: [PATCH 5/5] uio: Implement hotunplug support, using libunload

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Date:	Mon, 4 Oct 2010 12:47:39 +0200
From:	"Hans J. Koch" <hjk@...utronix.de>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Greg KH <greg@...ah.com>, Greg KH <gregkh@...e.de>,
	"Hans J. Koch" <hjk@...utronix.de>, linux-kernel@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 5/5] uio: Implement hotunplug support, using libunload

On Sun, Sep 26, 2010 at 03:49:03PM -0700, Eric W. Biederman wrote:

Checkpatch reports one error, see below.

Thanks,
Hans

> 
> +	/*
> +	 * Take the users lock before opening the file to ensure the
> +	 * file is not unregistered while it is being opened.
> +	 */
> +	ret = -EIO;
> +	if (!unload_trylock(&idev->unload))
> +		goto err_out;
> +
> +	ret = 0;
> +	if (idev->info->open)
>  		ret = idev->info->open(idev->info, inode);
> -		if (ret)
> -			goto err_infoopen;
> +	

The above line adds trailing whitespace.

> +	/*
> +	 * Add to the listener list only if the open succeeds.
> +	 * This ensures that uio_unregister_device won't call
> +	 * release unless open has succeeded.
> +	 */
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