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serial: forbid 8250 on s390

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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<x> 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 <alice@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christian Borntraeger 2017-12-12 09:08:35 +01:00 committed by Greg Kroah-Hartman
parent 42e64571d5
commit 1598e38c07
1 changed files with 1 additions and 0 deletions
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1
drivers/tty/serial/8250/Kconfig
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@ -5,6 +5,7 @@
config SERIAL_8250
tristate "8250/16550 and compatible serial support"
depends on !S390
select SERIAL_CORE
---help---
This selects whether you want to include the driver for the standard