Esempi in C++ (Cpp) per display_crc_ctl_parse

Esempio n. 1

File: intel_pipe_crc.c Progetto: MaxKellermann/linux

static ssize_t display_crc_ctl_write(struct file *file, const char __user *ubuf,
				     size_t len, loff_t *offp)
{
	struct seq_file *m = file->private_data;
	struct drm_i915_private *dev_priv = m->private;
	char *tmpbuf;
	int ret;

	if (len == 0)
		return 0;

	if (len > PAGE_SIZE - 1) {
		DRM_DEBUG_DRIVER("expected <%lu bytes into pipe crc control\n",
				 PAGE_SIZE);
		return -E2BIG;
	}

	tmpbuf = memdup_user_nul(ubuf, len);
	if (IS_ERR(tmpbuf))
		return PTR_ERR(tmpbuf);

	ret = display_crc_ctl_parse(dev_priv, tmpbuf, len);

	kfree(tmpbuf);
	if (ret < 0)
		return ret;

	*offp += len;
	return len;
}

Esempio n. 2

File: intel_pipe_crc.c Progetto: AshishNamdev/linux

static ssize_t display_crc_ctl_write(struct file *file, const char __user *ubuf,
				     size_t len, loff_t *offp)
{
	struct seq_file *m = file->private_data;
	struct drm_i915_private *dev_priv = m->private;
	char *tmpbuf;
	int ret;

	if (len == 0)
		return 0;

	if (len > PAGE_SIZE - 1) {
		DRM_DEBUG_DRIVER("expected <%lu bytes into pipe crc control\n",
				 PAGE_SIZE);
		return -E2BIG;
	}

	tmpbuf = kmalloc(len + 1, GFP_KERNEL);
	if (!tmpbuf)
		return -ENOMEM;

	if (copy_from_user(tmpbuf, ubuf, len)) {
		ret = -EFAULT;
		goto out;
	}
	tmpbuf[len] = '\0';

	ret = display_crc_ctl_parse(dev_priv, tmpbuf, len);

out:
	kfree(tmpbuf);
	if (ret < 0)
		return ret;

	*offp += len;
	return len;
}