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staging: comedi: ni_tiocmd: (!foo) preferred over (foo == NULL) 

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>
This commit is contained in:
H Hartley Sweeten 2015-03-04 12:15:39 -07:00 committed by Greg Kroah-Hartman
parent 9bacea57f4
commit 56e9707860
1 changed files with 3 additions and 3 deletions
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6
drivers/staging/comedi/drivers/ni_tiocmd.c
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@ -201,7 +201,7 @@ int ni_tio_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
unsigned long flags;
spin_lock_irqsave(&counter->lock, flags);
if (counter->mite_chan == NULL) {
if (!counter->mite_chan) {
dev_err(counter->counter_dev->dev->class_dev,
"commands only supported with DMA. ");
dev_err(counter->counter_dev->dev->class_dev,
@ -329,7 +329,7 @@ static int should_ack_gate(struct ni_gpct *counter)
case ni_gpct_variant_e_series:
spin_lock_irqsave(&counter->lock, flags);
{
if (counter->mite_chan == NULL ||
if (!counter->mite_chan ||
counter->mite_chan->dir != COMEDI_INPUT ||
(mite_done(counter->mite_chan))) {
retval = 1;
@ -443,7 +443,7 @@ void ni_tio_handle_interrupt(struct ni_gpct *counter,
break;
}
spin_lock_irqsave(&counter->lock, flags);
if (counter->mite_chan == NULL) {
if (!counter->mite_chan) {
spin_unlock_irqrestore(&counter->lock, flags);
return;
}