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staging: comedi: ni_mio_common: (!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 12:15:40 -07:00 коммит произвёл Greg Kroah-Hartman
Родитель 56e9707860
Коммит c6be154812
1 изменённых файлов: 6 добавлений и 6 удалений
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12
drivers/staging/comedi/drivers/ni_mio_common.c
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@ -755,7 +755,7 @@ static int ni_request_ai_mite_channel(struct comedi_device *dev)
BUG_ON(devpriv->ai_mite_chan);
devpriv->ai_mite_chan =
mite_request_channel(devpriv->mite, devpriv->ai_mite_ring);
if (devpriv->ai_mite_chan == NULL) {
if (!devpriv->ai_mite_chan) {
spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
dev_err(dev->class_dev,
"failed to reserve mite dma channel for analog input\n");
@ -776,7 +776,7 @@ static int ni_request_ao_mite_channel(struct comedi_device *dev)
BUG_ON(devpriv->ao_mite_chan);
devpriv->ao_mite_chan =
mite_request_channel(devpriv->mite, devpriv->ao_mite_ring);
if (devpriv->ao_mite_chan == NULL) {
if (!devpriv->ao_mite_chan) {
spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
dev_err(dev->class_dev,
"failed to reserve mite dma channel for analog outut\n");
@ -802,7 +802,7 @@ static int ni_request_gpct_mite_channel(struct comedi_device *dev,
mite_chan =
mite_request_channel(devpriv->mite,
devpriv->gpct_mite_ring[gpct_index]);
if (mite_chan == NULL) {
if (!mite_chan) {
spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
dev_err(dev->class_dev,
"failed to reserve mite dma channel for counter\n");
@ -828,7 +828,7 @@ static int ni_request_cdo_mite_channel(struct comedi_device *dev)
BUG_ON(devpriv->cdo_mite_chan);
devpriv->cdo_mite_chan =
mite_request_channel(devpriv->mite, devpriv->cdo_mite_ring);
if (devpriv->cdo_mite_chan == NULL) {
if (!devpriv->cdo_mite_chan) {
spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
dev_err(dev->class_dev,
"failed to reserve mite dma channel for correlated digital output\n");
@ -1657,7 +1657,7 @@ static int ni_ai_setup_MITE_dma(struct comedi_device *dev)
comedi_buf_write_alloc(s, s->async->prealloc_bufsz);
spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
if (devpriv->ai_mite_chan == NULL) {
if (!devpriv->ai_mite_chan) {
spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
return -EIO;
}
@ -3699,7 +3699,7 @@ static int ni_serial_hw_readwrite8(struct comedi_device *dev,
DIO_Serial_IO_In_Progress_St goes high one bit too early. */
udelay((devpriv->serial_interval_ns + 999) / 1000);
if (data_in != NULL)
if (data_in)
*data_in = ni_stc_readw(dev, DIO_Serial_Input_Register);
Error: