On Wed, 2008-06-18 at 09:55 -0600, Jonathan Corbet wrote: > I'll try to look into it tomorrow. Things may be slow; whenever I get > back into OLPC stuff after a long lapse it always seems to take me a day > to get back to where I can build new kernels and successfully install > them on a laptop.
Feel free to ask me for help. I've just had to figure out all this stuff for myself. > Meanwhile: > > > I added a loop counter and made it print out a message when it reaches > > the 500th iteration. It hit the condition rather quickly, and in the > > first case: addr=0x42 command=0x46 value=0x58 > > How quickly? Given the schedule_timeout(1) call, it should take a good > five seconds to iterate five hundred times at HZ=100. Might you > (generic OLPC "you") have bumped HZ at some point? If you have a > moment, could you try restoring the upstream code, but changing the > schedule_timeout() line to: Sorry, I didn't phrase that right. By "quickly" I meant that it only took about 15 reboots before the infinite loop happened. For any particular session where the inifinite loop happens, it does indeed take about 5 seconds to hit the 500th iteration. > schedule_timeout(10); It doesn't help, already seen two crashes. Erik also tried increasing the udelay() inside cafe_smbus_write_done() from 20 to 100. No change, the infinite loop still happens. Thanks, Daniel _______________________________________________ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel