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Altera_Forum
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21 years ago

input overrun(s)

I have a serial communications problem. I'm using NIOSserial device at the speed of 115200, and when I transfer a burst of 30 char, sometimes kernel send me a error message: ttyS0: input ov...
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Altera_Forum
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21 years ago

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originally posted by teo_icks@Jun 21 2005, 06:02 PM

what about this?

--- Quote End ---

Use the source Luke! 

$ find . -type f |xargs grep input\ overrun
./drivers/char/n_tty.c:         printk(KERN_WARNING "%s: %d input overrun(s)\n", tty_name(tty, buf),
$ vim ./drivers/char/n_tty.c

and in the source file 

/**
 *      n_tty_receive_overrun   -       handle overrun reporting
 *      @tty: terminal
 *
 *      Data arrived faster than we could process it. While the tty
 *      driver has flagged this the bits that were missed are gone
 *      forever.
 *
 *      Called from the receive_buf path so single threaded. Does not
 *      need locking as num_overrun and overrun_time are function
 *      private.
 */