Very Computer

thanks a lot,
arie

Quote:> Hi,
> During installation in graphics mode the serial microsoft mouse
> works. But when Linux starts the console mouse drivers, the
> following error appears: 'LSR Safety check engaged!', meaning that
> the UART 16550A returns 0xFF to a query of the serial device driver
> which then concludes that there is some problem. Result: no serial
> mouse or whatever device on the serial port will work.
> Now I looked for this problem in google and found
> http://uwsg.iu.edu/hypermail/linux/kernel/0002.1/0075.html
> as an explanation: a sloppy designed UART 16550A chip...
> My question: is there any updated driver somewhere in which this
> problem is resolved?
> Or is there any parameter that I can apply during start up to
> prevent the serial driver from performing this check?

> thanks a lot,
> arie

      /*
         * At this point there's no way the LSR could still be 0xFF;
         * if it is, then bail out, because there's likely no UART
         * here.
         */
        if (!(info->flags & ASYNC_BUGGY_UART) &&
            (serial_inp(info, UART_LSR) == 0xff)) {
                printk("ttyS%d: LSR safety check engaged!\n",
state->line);
                if (capable(CAP_SYS_ADMIN)) {
                        if (info->tty)
                                set_bit(TTY_IO_ERROR,
&info->tty->flags);
                } else
                        retval = -ENODEV;
                goto errout;
        }

Good luck

Michael Heiming

thanks for your reply!
arie

Quote:>      /*
>         * At this point there's no way the LSR could still be 0xFF;
>         * if it is, then bail out, because there's likely no UART
>         * here.
>         */
>        if (!(info->flags & ASYNC_BUGGY_UART) &&
>            (serial_inp(info, UART_LSR) == 0xff)) {
>                printk("ttyS%d: LSR safety check engaged!\n",
>state->line);
>                if (capable(CAP_SYS_ADMIN)) {
>                        if (info->tty)
>                                set_bit(TTY_IO_ERROR,
>&info->tty->flags);
>                } else
>                        retval = -ENODEV;
>                goto errout;
>        }

>Good luck

>Michael Heiming