From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752498AbdLLIsG (ORCPT ); Tue, 12 Dec 2017 03:48:06 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:34834 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750749AbdLLIsC (ORCPT ); Tue, 12 Dec 2017 03:48:02 -0500 Date: Tue, 12 Dec 2017 09:48:08 +0100 From: Greg Kroah-Hartman To: Christian Borntraeger Cc: Jiri Slaby , linux-serial@vger.kernel.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] serial: forbid 8250 on s390 Message-ID: <20171212084808.GA14030@kroah.com> References: <20171212080835.23610-1-borntraeger@de.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20171212080835.23610-1-borntraeger@de.ibm.com> User-Agent: Mutt/1.9.1 (2017-09-22) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Dec 12, 2017 at 09:08:35AM +0100, Christian Borntraeger wrote: > Using "make kvmconfig" results in a potentially unusable linux image > on s390. The reason is that both the (default on s390) sclp consoles > as well as the 8250 console register a ttyS as console. Since there > will be no 8250 on s390 let's fence 8250. This will ensure that there > is always a working sclp console. > > Reported-by: Alice Frosi > Signed-off-by: Christian Borntraeger > Reviewed-by: Hendrik Brueckner > --- > drivers/tty/serial/8250/Kconfig | 1 + > 1 file changed, 1 insertion(+) Does this need to be backported to any stable kernels? Or does anyone who runs them on s390 already have this config option disabled? thanks, greg k-h