Re: [PATCH] tty: not call tty close in fallback

[Greg KH]

On Mon, Jan 14, 2019 at 02:56:01PM +0800, yes wrote:
> From: Li RongQing <lirongqing@xxxxxxxxx>
> 
> when fail to open tty, tty is not in open status and not need
> to call close
> 
> Signed-off-by: Li RongQing <lirongqing@xxxxxxxxx>
> ---
>  drivers/tty/serdev/serdev-ttyport.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/tty/serdev/serdev-ttyport.c b/drivers/tty/serdev/serdev-ttyport.c
> index fa1672993b4c..bcc1e27d00de 100644
> --- a/drivers/tty/serdev/serdev-ttyport.c
> +++ b/drivers/tty/serdev/serdev-ttyport.c
> @@ -121,7 +121,7 @@ static int ttyport_open(struct serdev_controller *ctrl)
>  
>  	ret = tty->ops->open(serport->tty, NULL);
>  	if (ret)
> -		goto err_close;
> +		goto err_unlock;
>  
>  	tty_unlock(serport->tty);
>  
> @@ -142,8 +142,6 @@ static int ttyport_open(struct serdev_controller *ctrl)
>  
>  	return 0;
>  
> -err_close:
> -	tty->ops->close(tty, NULL);

No, close is always called after open, even if open fails.

thanks,

greg k-h