linux-kernel - Re: [PATCH 1/3] Return ENODEV instead of EINVAL when trying to open ACM device.

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Message-ID: <20090624204015.GD28516@suse.de>
Date:	Wed, 24 Jun 2009 13:40:15 -0700
From:	Greg KH <gregkh@...e.de>
To:	Thadeu Lima de Souza Cascardo <cascardo@...oscopio.com>
Cc:	linux-kernel@...r.kernel.org, alan@...rguk.ukuu.org.uk,
	linux-usb@...r.kernel.org, oliver@...kum.name
Subject: Re: [PATCH 1/3] Return ENODEV instead of EINVAL when trying to
	open ACM device.

On Wed, Jun 24, 2009 at 08:31:15AM -0300, Thadeu Lima de Souza Cascardo wrote:
> Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@...oscopio.com>
> ---
>  drivers/usb/class/cdc-acm.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
> index 38bfdb0..02eb60b 100644
> --- a/drivers/usb/class/cdc-acm.c
> +++ b/drivers/usb/class/cdc-acm.c
> @@ -550,7 +550,7 @@ static void acm_waker(struct work_struct *waker)
>  static int acm_tty_open(struct tty_struct *tty, struct file *filp)
>  {
>  	struct acm *acm;
> -	int rv = -EINVAL;
> +	int rv = -ENODEV;

Why is this needed?

thanks,

greg k-h
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