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    SubjectRe: How to avoid serial port buffer overruns?
    On Wed, Aug 16, 2006 at 05:24:26PM -0500, Paul Fulghum wrote:
    > Does the MIDI device using the standard N_TTY line discipline?
    > Are you using the low_latency flag on the serial device?
    > What type of UART has been tested (16550? other?)
    > Are you seeing overruns or just lost data?

    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.

    --
    Russell King
    Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
    maintainer of: 2.6 Serial core
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