Re: [PATCH 4.14.y v2] serial: lantiq: add missing interrupt ack

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Mon, Jun 19, 2023 at 11:10:08PM +0200, Bernhard Seibold wrote:
> commit 306320034e8fbe7ee1cc4f5269c55658b4612048 upstream.
> 
> Currently, the error interrupt is never acknowledged, so once active it
> will stay active indefinitely, causing the handler to be called in an
> infinite loop.
> 
> Fixes: 2f0fc4159a6a ("SERIAL: Lantiq: Add driver for MIPS Lantiq SOCs.")
> Cc: <stable@vger.kernel.org>
> Signed-off-by: Bernhard Seibold <mail@bernhard-seibold.de>
> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
> Message-ID: <20230602133029.546-1-mail@bernhard-seibold.de>
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> ---
>  drivers/tty/serial/lantiq.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c
> index 22df94f107e5..195b85176914 100644
> --- a/drivers/tty/serial/lantiq.c
> +++ b/drivers/tty/serial/lantiq.c
> @@ -1,3 +1,4 @@
> +
>  /*
>   *  Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
>   *

This first chunk was not needed :(

I'll go hand edit it...

greg k-h