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drivers/virtio: use virtqueue_nused() to check pending buffers

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Replace direct virtqueue internal field access with virtqueue_nused()
API to check for pending buffers in interrupt handlers. This improves
code maintainability and handles cached memory scenarios correctly.

Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
This commit is contained in:
Bowen Wang 2025-02-13 20:44:12 +08:00 • committed by Xiang Xiao
parent 1900d4c8fb
commit 3237e25d70
2 changed files with 2 additions and 4 deletions
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3
drivers/virtio/virtio-mmio.c
View file

@ -755,8 +755,7 @@ static int virtio_mmio_interrupt(int irq, FAR void *context, FAR void *arg)
for (i = 0; i < vmdev->vdev.vrings_num; i++)
{
vq = vrings_info[i].vq;
if (vq->vq_used_cons_idx != vq->vq_ring.used->idx &&
vq->callback != NULL)
if (vq->callback != NULL && virtqueue_nused(vq) > 0)
{
vq->callback(vq);
}

3
drivers/virtio/virtio-pci.c
View file

@ -99,8 +99,7 @@ static void virtio_pci_vq_callback(FAR struct virtio_pci_device_s *vpdev)
for (i = 0; i < vpdev->vdev.vrings_num; i++)
{
vq = vrings_info[i].vq;
if (vq->vq_used_cons_idx != vq->vq_ring.used->idx &&
vq->callback != NULL)
if (vq->callback != NULL && virtqueue_nused(vq) > 0)
{
vq->callback(vq);
}