Signed-off-by: H Hartley Sweeten <hswee...@visionengravers.com>
Cc: Ian Abbott <abbo...@mev.co.uk>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/staging/comedi/drivers/ni_mio_common.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c
b/drivers/staging/comedi/drivers/ni_mio_common.c
index b6ddc01..ea77896 100644
--- a/drivers/staging/comedi/drivers/ni_mio_common.c
+++ b/drivers/staging/comedi/drivers/ni_mio_common.c
@@ -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;
}
@@ -3705,7 +3705,7 @@ 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:
--
2.3.0
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