This BUG_ON() happens if a mite DMA channel is already requested when an
ansynchronous command is started for one of the counter subdevices.
The comedi core will only call the (*do_cmd) if the subdevice is not busy.
In this driver, the (*cancel) for the subdevice will always release any
requested mite DMA channel.
Remove the BUG_ON() which can never occur.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/ni_660x.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/staging/comedi/drivers/ni_660x.c b/drivers/staging/comedi/drivers/ni_660x.c
index 79678af..232c897 100644
--- a/drivers/staging/comedi/drivers/ni_660x.c
+++ b/drivers/staging/comedi/drivers/ni_660x.c
@@ -599,7 +599,6 @@ static int ni_660x_request_mite_channel(struct comedi_device *dev,
struct mite_channel *mite_chan;
spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
- BUG_ON(counter->mite_chan);
mite_chan = mite_request_channel(devpriv->mite,
mite_ring(devpriv, counter));
if (!mite_chan) {
--
2.6.3
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