Since the driver doesn't support interrupts, we must return early when index is set to VIRTIO_CONFIG_IRQ_IDX.

Fixes: 544f0278afca ("virtio: introduce macro VIRTIO_CONFIG_IRQ_IDX") Signed-off-by: Viresh Kumar viresh.kumar@linaro.org --- V2: Simplify and fix comments.

hw/virtio/vhost-user-i2c.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)

diff --git a/hw/virtio/vhost-user-i2c.c b/hw/virtio/vhost-user-i2c.c index 60eaf0d95be0..4eef3f063376 100644 --- a/hw/virtio/vhost-user-i2c.c +++ b/hw/virtio/vhost-user-i2c.c @@ -128,6 +128,14 @@ static void vu_i2c_guest_notifier_mask(VirtIODevice *vdev, int idx, bool mask) { VHostUserI2C *i2c = VHOST_USER_I2C(vdev);

+ /* + * We don't support interrupts, return early if index is set to + * VIRTIO_CONFIG_IRQ_IDX. + */ + if (idx == VIRTIO_CONFIG_IRQ_IDX) { + return; + } + vhost_virtqueue_mask(&i2c->vhost_dev, vdev, idx, mask); }

@@ -135,6 +143,14 @@ static bool vu_i2c_guest_notifier_pending(VirtIODevice *vdev, int idx) { VHostUserI2C *i2c = VHOST_USER_I2C(vdev);

+ /* + * We don't support interrupts, return early if index is set to + * VIRTIO_CONFIG_IRQ_IDX. + */ + if (idx == VIRTIO_CONFIG_IRQ_IDX) { + return false; + } + return vhost_virtqueue_pending(&i2c->vhost_dev, idx); }