Messages in this thread | | | Date | Tue, 23 Oct 2012 11:01:33 +0100 | From | Alan Cox <> | Subject | Re: [PATCH] serial: 8250 check iir rdi in interrupt |
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> Added module parameter skip_rdi_check to opt out this workaround.
NAK. Anything like this should be runtime.
> Tested on Radisys ATCA 46XX which uses FPGA 16550-compatible and > other generic 16550 UART. It takes from an hour to days to reproduce by > pumping inputs to serial console continously using TeraTerm script:
You turn this on by default but it's a nasty IRQ latency penalty on a lot of x86 platforms with the uarts on the lpc bus.
What I am not clear on from this is
- do you see it on both the ports (the bug that is) - if you do see it on both are you sure its not in reality a symptom of some other console/irq handling race ?
Alan
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