vfio-ccw: Refactor IRQ handlers (4296151d) · Commits · 戴 / test

drivers/s390/cio/vfio_ccw_ops.c

+17 −6

Original line number	Diff line number	Diff line
		@@ -387,17 +387,21 @@ static int vfio_ccw_mdev_get_region_info(struct vfio_region_info *info,

		static int vfio_ccw_mdev_get_irq_info(struct vfio_irq_info *info)
		{
		if (info->index != VFIO_CCW_IO_IRQ_INDEX)
		return -EINVAL;

		switch (info->index) {
		case VFIO_CCW_IO_IRQ_INDEX:
		info->count = 1;
		info->flags = VFIO_IRQ_INFO_EVENTFD;
		break;
		default:
		return -EINVAL;
		}

		return 0;
		}

		static int vfio_ccw_mdev_set_irqs(struct mdev_device *mdev,
		uint32_t flags,
		uint32_t index,
		void __user *data)
		{
		struct vfio_ccw_private *private;
		@@ -407,7 +411,14 @@ static int vfio_ccw_mdev_set_irqs(struct mdev_device *mdev,
		return -EINVAL;

		private = dev_get_drvdata(mdev_parent_dev(mdev));

		switch (index) {
		case VFIO_CCW_IO_IRQ_INDEX:
		ctx = &private->io_trigger;
		break;
		default:
		return -EINVAL;
		}

		switch (flags & VFIO_IRQ_SET_DATA_TYPE_MASK) {
		case VFIO_IRQ_SET_DATA_NONE:
		@@ -579,7 +590,7 @@ static ssize_t vfio_ccw_mdev_ioctl(struct mdev_device *mdev,
		return ret;

		data = (void __user *)(arg + minsz);
		return vfio_ccw_mdev_set_irqs(mdev, hdr.flags, data);
		return vfio_ccw_mdev_set_irqs(mdev, hdr.flags, hdr.index, data);
		}
		case VFIO_DEVICE_RESET:
		return vfio_ccw_mdev_reset(mdev);