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virtio: rng: Check notifier helpers for VIRTIO_CONFIG_IRQ_IDX
Since the driver doesn't support interrupts, we must return early when index is set to VIRTIO_CONFIG_IRQ_IDX. Basically the same thing Viresh did for "91208dd297
virtio: i2c: Check notifier helpers for VIRTIO_CONFIG_IRQ_IDX". Fixes:544f0278af
("virtio: introduce macro VIRTIO_CONFIG_IRQ_IDX") Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Message-Id: <20231025171841.3379663-1-mathieu.poirier@linaro.org> Tested-by: Leo Yan <leo.yan@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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@ -129,6 +129,14 @@ static void vu_rng_guest_notifier_mask(VirtIODevice *vdev, int idx, bool mask)
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{
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VHostUserRNG *rng = VHOST_USER_RNG(vdev);
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/*
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* We don't support interrupts, return early if index is set to
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* VIRTIO_CONFIG_IRQ_IDX.
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*/
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if (idx == VIRTIO_CONFIG_IRQ_IDX) {
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return;
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}
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vhost_virtqueue_mask(&rng->vhost_dev, vdev, idx, mask);
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}
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@ -136,6 +144,14 @@ static bool vu_rng_guest_notifier_pending(VirtIODevice *vdev, int idx)
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{
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VHostUserRNG *rng = VHOST_USER_RNG(vdev);
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/*
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* We don't support interrupts, return early if index is set to
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* VIRTIO_CONFIG_IRQ_IDX.
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*/
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if (idx == VIRTIO_CONFIG_IRQ_IDX) {
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return false;
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}
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return vhost_virtqueue_pending(&rng->vhost_dev, idx);
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}
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