On Friday 10 July 2009 19:20:01 Andrew Thompson wrote: > Hi, > > The one usb task that is still an issue for 8.0 is the polling > support. The code needs to call into the host controller driver to > check if the usb descriptor has been marked as done and call the > completion callback. I am now traveling so cant look at it, if anyone > wants to have a look it would be fantastic. This is needed for places > where a usb keyboard is used and interrupts are disabled (root mount, > DDB). Hi, Probably we can implement USB polling with minimal transfer support. That basically means: - no timeouts - no automatic clear-stall Only support for ukbd and umass. Shouldn't be too hard. What is more hard, is that the sys/dev/usb/input/ukbd.c driver has to get away from using the Giant lock. Last time I looked at that it was impossible because the whole keyboard layer was under Giant. Has anything changed here? If not the USB keyboard will only work if kdb_enter() is called when Giant is locked! --HPSReceived on Sat Jul 11 2009 - 13:10:42 UTC
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