Messages in this thread | | | Date | Tue, 21 Nov 2006 13:18:23 +0100 | From | Marc Haber <> | Subject | Re: ttyS0 not working any more, LSR safety check engaged |
| |
On Sat, Nov 11, 2006 at 12:43:52PM +0100, Marc Haber wrote: > since a few kernel versions (I unfortunately do not have logs going > back more than two months, 2.6.17.13), the serial port on my hp compaq > nc8000 is not working any more. > > The Linux kernel logs "ttyS0: LSR safety check engaged!" whenever I > try to use the port. Googling for this error message suggests that the > port may either not be present or broken. I can confirm that both are > not the case: The port is present and works fine both on Windows and > with an older Knoppix version using a very old 2.6 kernel (I think > 2.6.4). > > Is it possible that a moderately recent update to the driver is > broken?
The issue was udev loading smsc_ircc2. As soon as smsc_ircc2 is loaded, the serial port shows the behavior listed above. Unloading the module does not help, a reboot is needed.
I have now solved the issue locally by blacklisting smsc_ircc2 and hope that I didn't break anything in this process.
Greetings Marc
-- ----------------------------------------------------------------------------- Marc Haber | "I don't trust Computers. They | Mailadresse im Header Mannheim, Germany | lose things." Winona Ryder | Fon: *49 621 72739834 Nordisch by Nature | How to make an American Quilt | Fax: *49 621 72739835 - 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/
| |