virtio: console: Introduce a send_buf function for a common path for sending data to host
Adding support for generic ports that will write to userspace will need some code changes. Consolidate the write routine into send_buf() and put_chars() now just calls into the new function. Signed-off-by:Amit Shah <amit.shah@redhat.com> Signed-off-by:
Rusty Russell <rusty@rustcorp.com.au>
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