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staging: comedi: comedi_fops: (!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:
parent
62af7214d8
commit
88cc30cfcf
1 changed files with 11 additions and 11 deletions
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@ -144,7 +144,7 @@ static void comedi_device_cleanup(struct comedi_device *dev)
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{
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struct module *driver_module = NULL;
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if (dev == NULL)
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if (!dev)
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return;
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mutex_lock(&dev->mutex);
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if (dev->attached)
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@ -260,7 +260,7 @@ comedi_read_subdevice(const struct comedi_device *dev, unsigned int minor)
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if (minor >= COMEDI_NUM_BOARD_MINORS) {
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s = comedi_subdevice_from_minor(dev, minor);
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if (s == NULL || (s->subdev_flags & SDF_CMD_READ))
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if (!s || (s->subdev_flags & SDF_CMD_READ))
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return s;
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}
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return dev->read_subdev;
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@ -273,7 +273,7 @@ comedi_write_subdevice(const struct comedi_device *dev, unsigned int minor)
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if (minor >= COMEDI_NUM_BOARD_MINORS) {
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s = comedi_subdevice_from_minor(dev, minor);
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if (s == NULL || (s->subdev_flags & SDF_CMD_WRITE))
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if (!s || (s->subdev_flags & SDF_CMD_WRITE))
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return s;
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}
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return dev->write_subdev;
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@ -290,9 +290,9 @@ static void comedi_file_reset(struct file *file)
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write_s = dev->write_subdev;
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if (minor >= COMEDI_NUM_BOARD_MINORS) {
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s = comedi_subdevice_from_minor(dev, minor);
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if (s == NULL || s->subdev_flags & SDF_CMD_READ)
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if (!s || s->subdev_flags & SDF_CMD_READ)
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read_s = s;
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if (s == NULL || s->subdev_flags & SDF_CMD_WRITE)
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if (!s || s->subdev_flags & SDF_CMD_WRITE)
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write_s = s;
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}
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cfp->last_attached = dev->attached;
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@ -759,7 +759,7 @@ static int do_devconfig_ioctl(struct comedi_device *dev,
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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if (arg == NULL) {
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if (!arg) {
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if (is_device_busy(dev))
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return -EBUSY;
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if (dev->attached) {
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@ -1840,7 +1840,7 @@ static int do_cancel_ioctl(struct comedi_device *dev, unsigned long arg,
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if (arg >= dev->n_subdevices)
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return -EINVAL;
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s = &dev->subdevices[arg];
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if (s->async == NULL)
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if (!s->async)
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return -EINVAL;
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if (!s->busy)
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@ -2682,7 +2682,7 @@ struct comedi_device *comedi_alloc_board_minor(struct device *hardware_device)
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unsigned i;
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dev = kzalloc(sizeof(*dev), GFP_KERNEL);
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if (dev == NULL)
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if (!dev)
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return ERR_PTR(-ENOMEM);
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comedi_device_init(dev);
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comedi_set_hw_dev(dev, hardware_device);
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@ -2690,7 +2690,7 @@ struct comedi_device *comedi_alloc_board_minor(struct device *hardware_device)
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mutex_lock(&comedi_board_minor_table_lock);
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for (i = hardware_device ? comedi_num_legacy_minors : 0;
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i < COMEDI_NUM_BOARD_MINORS; ++i) {
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if (comedi_board_minor_table[i] == NULL) {
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if (!comedi_board_minor_table[i]) {
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comedi_board_minor_table[i] = dev;
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break;
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}
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@ -2746,7 +2746,7 @@ int comedi_alloc_subdevice_minor(struct comedi_subdevice *s)
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mutex_lock(&comedi_subdevice_minor_table_lock);
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for (i = 0; i < COMEDI_NUM_SUBDEVICE_MINORS; ++i) {
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if (comedi_subdevice_minor_table[i] == NULL) {
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if (!comedi_subdevice_minor_table[i]) {
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comedi_subdevice_minor_table[i] = s;
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break;
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}
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@ -2771,7 +2771,7 @@ void comedi_free_subdevice_minor(struct comedi_subdevice *s)
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{
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unsigned int i;
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if (s == NULL)
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if (!s)
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return;
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if (s->minor < 0)
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return;
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