Paolo Bonzini bfa7362889 serial: refine serial_thr_ipending_needed
If the THR interrupt is disabled, there is no need to migrate thr_ipending
because LSR.THRE will be sampled again when the interrupt is enabled.
(This is the behavior that is not documented in the datasheet, but
relied on by Windows!)

Note that in this case IIR will never be 0x2 so, if thr_ipending were
to be one, QEMU would produce the subsection.

Reported-by: Igor Mammedov <imammedo@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-01-03 09:22:12 +01:00
2014-12-15 17:34:44 +01:00
2014-11-14 12:15:40 +01:00
2014-12-17 14:11:39 +01:00
2014-10-24 12:19:11 +01:00
2014-09-26 13:37:06 -04:00
2014-09-26 09:34:39 +01:00
2014-12-10 10:31:12 +01:00
2014-12-12 15:48:26 +00:00
2014-12-11 16:47:23 +00:00
2014-10-31 11:29:01 +01:00
2014-12-09 21:48:34 +00:00
2014-12-11 16:47:23 +00:00

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