On Gwe, 2005-09-09 at 10:25 +0530, Vadivelan@xxxxxxxxxxxx wrote: > hi, > I'm porting MVL4.0 kernel on to a mips board. I've been getting > a call trace as follows. You should report vendor kernel bugs to the vendor really. I've not seen an equivalent report for the base kernel and looking at the code the base kernel appears to correctly drop the lock before calling the wait for chars level.