staging: comedi: amplc_pci224: (!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>
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@ -838,7 +838,7 @@ static int pci224_ao_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
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unsigned long flags;
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/* Cannot handle null/empty chanlist. */
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if (cmd->chanlist == NULL || cmd->chanlist_len == 0)
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if (!cmd->chanlist || cmd->chanlist_len == 0)
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return -EINVAL;
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/* Determine which channels are enabled and their load order. */
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