From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg Kroah-Hartman Subject: Re: [PATCH] serial: forbid 8250 on s390 Date: Tue, 12 Dec 2017 09:48:08 +0100 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 Return-path: Content-Disposition: inline In-Reply-To: <20171212080835.23610-1-borntraeger@de.ibm.com> Sender: linux-kernel-owner@vger.kernel.org List-Archive: List-Post: To: Christian Borntraeger Cc: Jiri Slaby , linux-serial@vger.kernel.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org List-ID: 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