/* Allocate new pipe kernel object */
struct goldfish_pipe *pipe = kzalloc(sizeof(*pipe), GFP_KERNEL);
- if (pipe == NULL)
+ if (!pipe)
return -ENOMEM;
pipe->dev = dev;
struct goldfish_pipe_dev *dev = &goldfish_pipe_dev;
/* not thread safe, but this should not happen */
- WARN_ON(dev->base != NULL);
+ WARN_ON(dev->base);
spin_lock_init(&dev->lock);
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (r == NULL || resource_size(r) < PAGE_SIZE) {
+ if (!r || resource_size(r) < PAGE_SIZE) {
dev_err(&pdev->dev, "can't allocate i/o page\n");
return -EINVAL;
}
dev->base = devm_ioremap(&pdev->dev, r->start, PAGE_SIZE);
- if (dev->base == NULL) {
+ if (!dev->base) {
dev_err(&pdev->dev, "ioremap failed\n");
return -EINVAL;
}
r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (r == NULL) {
+ if (!r) {
err = -EINVAL;
goto error;
}