Fw: serial console does not wake from S3 suspend

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"Valerio Vanni" <valerio@xxxxxxxxxxxxxxxx> ha scritto nel messaggio
news:lg9etc$9fl$1@xxxxxxxxxxxxx
When resuming from S3 suspend, serial console starts sending garbage
on the serial port.
Not continuously, it sends garbage only when in local console prints
a text.
It stops only when the (sending) machine is shut down, or if some
text is sent manually (i.e. with "cat txtfile > /dev/ttyS0").

Full details are here:
https://bugzilla.kernel.org/show_bug.cgi?id=69751

It's still present in 3.15-rc1 and in actual -next.

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