There are several conditions that make au0828 stream to hang. Those
were independently detected by me, Reynaldo and Trevor.
Trevor kindly provided a code that make this error visible: running
it ~10-15 times on a loop makes the au0828 to stop sending stream.
Once it stops, not even removing/reinserting the driver is enough to
restore its behavior. The device needs to be physically removed, or
a reset command should be sent via I2C.
On my research, this seems to be due to some hardware bug, caused
by (at least) two factors:
- TS should be stopped before setting the frontend;
- xc5000 cannot suspend, if userspace is in a loop of
open/stream/close.
This patch series address both issues.
While here, it also fixes most checkpatch issues at xc5000.
Reynaldo/Trevor,
Please test, and send your tested-by, if this fixes the issue.
Thanks,
Mauro
Changbing Xiong (1):
[media] au0828: Cancel stream-restart operation if frontend is
disconnected
Mauro Carvalho Chehab (7):
[media] au0828: Improve debug messages for urb_completion
[media] Reset au0828 streaming when a new frequency is set
xc5000: get rid of positive error codes
xc5000: Don't wrap msleep()
xc5000: fix CamelCase
xc5000: Don't use whitespace before tabs
xc5000: delay tuner sleep to 5 seconds
drivers/media/tuners/xc5000.c | 302 ++++++++++++++++++----------------
drivers/media/usb/au0828/au0828-dvb.c | 57 ++++++-
drivers/media/usb/au0828/au0828.h | 2 +
3 files changed, 210 insertions(+), 151 deletions(-)
mode change 100644 => 100755 drivers/media/usb/au0828/au0828-dvb.c
--
1.9.0
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