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s390/sclp_tty: enable line mode tty even if there is an ascii console
commit8f50af49f5
("s390/console: Make preferred console handling more consistent") created a separate console state for the ascii console. This has the side effect that we register no tty for the line mode interface as soon as there an ascii interface as default console. Under KVM this results in no getty program on the line mode tty if the guest has both types of interfaces. As we can have multiple ttys at the same time we do not want to disable the tty on sclp_line0 under KVM. So instead of checking for the console mode, we now check for the presence of the sclp line mode interface. As z/VM multiplexes the line mode interface on the 32xx screen we continue to disable the line mode tty for the z/VM case. CC: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Fixes:8f50af49f5
("s390/console: Make preferred console handling more consistent") Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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@ -502,7 +502,10 @@ sclp_tty_init(void)
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int i;
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int rc;
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if (!CONSOLE_IS_SCLP)
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/* z/VM multiplexes the line mode output on the 32xx screen */
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if (MACHINE_IS_VM && !CONSOLE_IS_SCLP)
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return 0;
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if (!sclp.has_linemode)
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return 0;
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driver = alloc_tty_driver(1);
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if (!driver)
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