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authorChristian Borntraeger <borntraeger@de.ibm.com>2011-09-22 23:44:23 +0530
committerRusty Russell <rusty@rustcorp.com.au>2011-11-02 11:41:01 +1030
commit5e38483b350405542c8080134408fd8897394ba2 (patch)
tree34d746dadbec16fd33e4f08cf90561ee62a3014e /drivers/virtio
parent17e5b4f20adbe286fdf14b4d08f296564e97e545 (diff)
virtio: console: wait for first console port for early console output
On s390 I have seen some random "Warning: unable to open an initial console" boot failure. Turns out that tty_open fails, because the hvc_alloc was not yet done. In former times this could not happen, since the probe function automatically called hvc_alloc. With newer versions (multiport) some host<->guest interaction is required before hvc_alloc is called. This might be too late, especially if an initramfs is involved. Lets use a completion if we have multiport and an early console. [Amit: * Use NULL instead of 0 for pointer comparison * Rename 'port_added' to 'early_console_added' * Re-format, re-word commit message * Rebase patch on top of current queue] Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Amit Shah <amit.shah@redhat.com> Acked-by: Chrstian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/virtio')
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