Messages in this thread | | | From | "Ulrich Windl" <> | Date | Thu, 28 Jan 1999 09:13:40 +0100 | Subject | 2.2.0: serial driver not using interrupts? |
| |
Hello,
I have a very strange problem: I'm playing with Linux 2.2.0 and my PPSkit-0.4.2 patches: While the thing works in/with 2.0.36, I'm unlucky with 2.2.0. Even more, what I found out is very strange:
It seems that the UART for the serial port does not create interrupts any longer, but uses polling every 10 seconds instead. Unfortunately this means I'm loosing characters. Monitoring /proc/tty/driver/serial I found out that rx characters and parity errors increase by roughly 10 every 10 seconds (I'm sending a "character" every second, by sending the same pulse of 100 or 200ms to RxD and CD).
As this sounds hard to believe, I recompiled the thing with serial debugging and I'll include the edited part of my syslog showing the serial driver's messages and xntpd's complaints together with time.
At the end you'll find from /proc/interrupts that the serial port only produced ONE interrupt...
Am I the only one to have this problem? (Or does my PPSkit break something severely in 2.2 (I can't believe))
Regards, Ulrich BTW: MAINTAINERS lacks a person for the general serial driver...
The following section of this message contains a file attachment prepared for transmission using the Internet MIME message format. If you are using Pegasus Mail, or any another MIME-compliant system, you should be able to save it or view it from within your mailer. If you cannot, please ask your system administrator for assistance.
---- File information ----------- File: serial~1.txt Date: 27 Jan 1999, 22:40 Size: 3577 bytes. Type: Text [unhandled content-type:application/octet-stream] | |