If the MIDI UART is not ready for output, don't spin at IPL_CLOCK;
just return and make the midi(4) driver retry later. UART buffers
are large enough for this, except eap(4) which uses interrupts for

If the MIDI UART is not ready for output, don't spin at IPL_CLOCK;
just return and make the midi(4) driver retry later. UART buffers
are large enough for this, except eap(4) which uses interrupts for
output.
help from and ok jsg@

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First pass at removing clauses 3 and 4 from NetBSD licenses.

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code t

First pass at removing clauses 3 and 4 from NetBSD licenses.

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.

OK deraadt@

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repair input vs output confusion

makes 'audioctl play.gain' work correctly

from NetBSD

sync up to NetBSD; reviewed by csapuntz@
- better support for more chip revisions
- split register definitions into separate header file
- KNF