Messages in this thread | | | Date | Thu, 17 Aug 2006 00:19:26 +0100 | From | Russell King <> | Subject | Re: How to avoid serial port buffer overruns? |
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On Wed, Aug 16, 2006 at 07:15:06PM -0400, Lee Revell wrote: > On Thu, 2006-08-17 at 00:10 +0100, Russell King wrote: > > MIDI uses its own driver - sound/drivers/serial-u16550.c. My guess > > is there's something in the system starving interrupt servicing. > > Serial is very sensitive to that, and increases in other system > > latencies tends to have an adverse impact on serial. > > Have you seen many other reports of serial working reliably in 2.4 but > not in 2.6? Right now this is the only clue I have to go on...
There have been one or two, but the above is basically as far as I've got. Unfortunately, I don't have any machines slow enough (or maybe with the right hardware) to exhibit the problem.
-- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 Serial core - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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