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| author |   Zhu Lingshan <lingshan.zhu@intel.com> | 2022-02-22 19:54:25 +0800 |
|---|---|---|
| committer |   Michael S. Tsirkin <mst@redhat.com> | 2022-03-28 16:52:57 -0400 |
| commit | cce0ab2b2a39072d81f98017f7b076f3410ef740 (patch) | |
| tree | 7ca2660a6c29d97778e65b248a66679cd5b2bf21 /drivers/vhost/vdpa.c | |
| parent | vDPA/ifcvf: make use of virtio pci modern IO helpers in ifcvf (diff) | |
| download | linux-dev-cce0ab2b2a39072d81f98017f7b076f3410ef740.tar.xz linux-dev-cce0ab2b2a39072d81f98017f7b076f3410ef740.zip | |
vhost_vdpa: don't setup irq offloading when irq_num < 0
When irq number is negative(e.g., -EINVAL), the virtqueue
may be disabled or the virtqueues are sharing a device irq.
In such case, we should not setup irq offloading for a virtqueue.
Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Link: https://lore.kernel.org/r/20220222115428.998334-3-lingshan.zhu@intel.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vhost/vdpa.c')
| -rw-r--r-- | drivers/vhost/vdpa.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index ec5249e8c32d..05f5fd2af58f 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -97,8 +97,11 @@ static void vhost_vdpa_setup_vq_irq(struct vhost_vdpa *v, u16 qid) return; irq = ops->get_vq_irq(vdpa, qid); + if (irq < 0) + return; + irq_bypass_unregister_producer(&vq->call_ctx.producer); - if (!vq->call_ctx.ctx || irq < 0) + if (!vq->call_ctx.ctx) return; vq->call_ctx.producer.token = vq->call_ctx.ctx; |