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staging: comedi: drivers: (!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 12:15:29 -07:00 committed by Greg Kroah-Hartman
parent 88cc30cfcf
commit e285016076
1 changed files with 4 additions and 4 deletions
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8
drivers/staging/comedi/drivers.c
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@ -46,7 +46,7 @@ int comedi_set_hw_dev(struct comedi_device *dev, struct device *hw_dev)
{
if (hw_dev == dev->hw_dev)
return 0;
if (dev->hw_dev != NULL)
if (dev->hw_dev)
return -EEXIST;
dev->hw_dev = get_device(hw_dev);
return 0;
@ -802,7 +802,7 @@ int comedi_device_attach(struct comedi_device *dev, struct comedi_devconfig *it)
}
module_put(driv->module);
}
if (driv == NULL) {
if (!driv) {
/* recognize has failed if we get here */
/* report valid board names before returning error */
for (driv = comedi_drivers; driv; driv = driv->next) {
@ -814,7 +814,7 @@ int comedi_device_attach(struct comedi_device *dev, struct comedi_devconfig *it)
ret = -EIO;
goto out;
}
if (driv->attach == NULL) {
if (!driv->attach) {
/* driver does not support manual configuration */
dev_warn(dev->class_dev,
"driver '%s' does not support attach using comedi_config\n",
@ -898,7 +898,7 @@ EXPORT_SYMBOL_GPL(comedi_auto_config);
void comedi_auto_unconfig(struct device *hardware_device)
{
if (hardware_device == NULL)
if (!hardware_device)
return;
comedi_release_hardware_device(hardware_device);
}