hi, I probably should have sent that in reply to http://article.gmane.org/gmane.linux.drivers.video-input-infrastructure/49740 which is the problem it fixes. Some things which might be of interest: 1. I innocently followed the instructions on http://www.linuxtv.org/wiki/index.php/Maintaining_Git_trees (i.e., use v4l-dvb tree on top of linus tree) and spent a while looking at IR/ir-sysfs.c instead of rc/rc-main.c. How stable it seemed! no patches in years! So I added a warning at the top of the wiki page, though a fix from someone who knows would be preferable. 2. From the above, I ended up reading a lot of ancient history and saw that this was inadvertently sort of fixed for a few weeks in 2010 between a08c7c68f702e2a2797a4035b and d8b4b5822f51e2142b731b42. 3. I wrote: > This patch avoids the NULL dereference, and ignores the issue of how > this state of affairs came about in the first place. Would, in rc_unregister_device(), putting device_del(&dev->dev) before ir_raw_event_unregister(dev) help? I've only been a kernel hacker for two hours so I am honestly clueless, but it seems like that might avert the race by hiding the structure from sysfs before it is pulled apart. regards, Douglas -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
