Messages in this thread | | | From | Meelis Roos <> | Subject | Re: Serial: bug in 8250.c when handling PCI or other level triggers | Date | Wed, 14 Dec 2005 18:07:00 +0200 (EET) |
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AC> The receive_chars function is designed to handle the case where the port AC> is jammed full on by aborting after 256 characters in one IRQ. AC> Unfortunately the author of this code forgot that some systems are level AC> triggered. On these systems the IRQ simply gets invoked again and the AC> count loop just makes the problem take longer to clear.
Could this be connected wiht the massive amount of these messages when I use minicom on a PC to see another computers serial console?
serial8250: too much work for irq4
I've seen this on different PC-s, PIIX3+K6 and ICH2+Celeron are the last ones that I certainly remember behaving like this.
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