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staging: comedi: ni_mio_common: remove some unnecessary BUG_ON()
The mite dma channels are only requested by a subdevice with a (*do_cmd) and they are released by a (*cancel). The comedi core will only call the (*do_cmd) if the subdevice is not already running a command and all commands are terminated by the core with a (*cancel). Remove the BUG_ON() checks in the request functions which can never happen. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 0 additions and 4 deletions
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@ -665,7 +665,6 @@ static int ni_request_ai_mite_channel(struct comedi_device *dev)
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unsigned long flags;
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spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
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BUG_ON(devpriv->ai_mite_chan);
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devpriv->ai_mite_chan =
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mite_request_channel(devpriv->mite, devpriv->ai_mite_ring);
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if (!devpriv->ai_mite_chan) {
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@ -686,7 +685,6 @@ static int ni_request_ao_mite_channel(struct comedi_device *dev)
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unsigned long flags;
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spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
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BUG_ON(devpriv->ao_mite_chan);
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devpriv->ao_mite_chan =
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mite_request_channel(devpriv->mite, devpriv->ao_mite_ring);
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if (!devpriv->ao_mite_chan) {
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@ -710,7 +708,6 @@ static int ni_request_gpct_mite_channel(struct comedi_device *dev,
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struct mite_channel *mite_chan;
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spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
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BUG_ON(devpriv->counter_dev->counters[gpct_index].mite_chan);
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mite_chan =
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mite_request_channel(devpriv->mite,
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devpriv->gpct_mite_ring[gpct_index]);
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@ -737,7 +734,6 @@ static int ni_request_cdo_mite_channel(struct comedi_device *dev)
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unsigned long flags;
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spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
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BUG_ON(devpriv->cdo_mite_chan);
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devpriv->cdo_mite_chan =
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mite_request_channel(devpriv->mite, devpriv->cdo_mite_ring);
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if (!devpriv->cdo_mite_chan) {
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