bde
9f1b68b597
Don't fiddle with RTS if RTS flow control is off. This gives applications
almost complete control over RTS (control of its initial value is still missing). This fixes PR 1644 for sio. The author of PR 1644 wants it in 2.1.6 and 2.2. This may be safe since the complications are only in rarely used cases that I hope I've covered.
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freebsd kernel with SKQ
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