On 9/3/19 5:45 AM, Scott Doty wrote: > On 9/2/19 12:31 AM, Hans Verkuil wrote: >> Hi Scott, > > Hi Hans! Thank you for the speedy reply. :) > >> The only non-trivial change in hdpvr in 5.3 is this commit: >> >> commit 6bc5a4a1927556ff9adce1aa95ea408c95453225 >> Author: Hans Verkuil <hverkuil@xxxxxxxxx> >> Date: Thu Jun 20 07:43:41 2019 -0400 >> >> media: hdpvr: fix locking and a missing msleep >> >> Try reverting it and see if it makes a difference. > > I should mention that I haven't tried this driver for over a year, > so it's not just the change to 5.3 that we would be talking about. > > Tried reverting the commit and built Linux 5.3-rc7+ -- alas, it didn't > change anything. > >> >> Also test with 'v4l2-ctl -d /dev/videoX --stream-mmap' and see if it >> keeps streaming buffers or if it also stalls. > > That doesn't seem to work: > > $ v4l2-ctl -d /dev/video2 --stream-mmap > New timings found > VIDIOC_REQBUFS: failed: Inappropriate ioctl for device That's weird. I'll dig out my hdpvr later this week and test as well. > > I suspect I might have to do a git bisect to find where the problem started. That would certainly help. Regards, Hans
