On Wed, 2010-08-04 at 07:03 -0500, Jason Wessel wrote: > The usb serial has the same kind of problem with all sorts of locks. > I > had resorted to using a tasklet or workqueue to get the sysrq to > execute > just outside the usb serial driver context. This work never made it > upstream because it was part of another series, but the reference is: > http://lkml.org/lkml/2010/3/9/17 > > For the standard serial you might be able to get away with dropping > the > lock for the sysrq. > > Did you have a particular way to trigger the problem or was it just > completely random, because I don't know that I have observed this > behavior with the typical 8250 driver. Yes, I do actually :-) A 64-way machine and a bunch of processes flooding the console will do it just fine :-) Cheers, Ben. -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
