static long hostaudio_ioctl()

in drivers/hostaudio_kern.c [132:173]

• 38 lines of code
• 15 McCabe index (conditional complexity)

static long hostaudio_ioctl(struct file *file,
			   unsigned int cmd, unsigned long arg)
{
	struct hostaudio_state *state = file->private_data;
	unsigned long data = 0;
	int err;

#ifdef DEBUG
	printk(KERN_DEBUG "hostaudio: ioctl called, cmd = %u\n", cmd);
#endif
	switch(cmd){
	case SNDCTL_DSP_SPEED:
	case SNDCTL_DSP_STEREO:
	case SNDCTL_DSP_GETBLKSIZE:
	case SNDCTL_DSP_CHANNELS:
	case SNDCTL_DSP_SUBDIVIDE:
	case SNDCTL_DSP_SETFRAGMENT:
		if (get_user(data, (int __user *) arg))
			return -EFAULT;
		break;
	default:
		break;
	}

	err = os_ioctl_generic(state->fd, cmd, (unsigned long) &data);

	switch(cmd){
	case SNDCTL_DSP_SPEED:
	case SNDCTL_DSP_STEREO:
	case SNDCTL_DSP_GETBLKSIZE:
	case SNDCTL_DSP_CHANNELS:
	case SNDCTL_DSP_SUBDIVIDE:
	case SNDCTL_DSP_SETFRAGMENT:
		if (put_user(data, (int __user *) arg))
			return -EFAULT;
		break;
	default:
		break;
	}

	return err;
}