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    SubjectRe: Polling ? :-(
       Date: 	Tue, 16 Jun 1998 10:23:22 +0530
    From: sameer <>

    Currently I 'm writing a driver for a multi port serial
    interface card on 2.0.0 as a module. The card interrupts only when data
    is to be received or on detection of any changes in modem signals but
    not when data needs to be transmitted :-( This would make it necessary
    for a polling routine to be written which would tx data to the ports
    which have data pending in their trasmit buffers....

    What would be the best way to hook up such a polling routine?

    The easist way is to simply use the add_timer/del_timer interface. See
    the second half of /usr/src/include/linux/timer.h for more details.

    You'll have to reinstall add_timer each time the timer runs, but this
    will allow you to figure out when the next time your timer routine
    should run, and adjust the time in the timer_struct accordingly.

    Hope this helps.

    - Ted

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