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authorZhu Lingshan <lingshan.zhu@intel.com>2022-02-22 19:54:25 +0800
committerMichael S. Tsirkin <mst@redhat.com>2022-03-28 16:52:57 -0400
commitcce0ab2b2a39072d81f98017f7b076f3410ef740 (patch)
tree7ca2660a6c29d97778e65b248a66679cd5b2bf21 /drivers/vhost
parent8897d6d0fcc9ce54f53c0d14de2ada35e9527e8b (diff)
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')
-rw-r--r--drivers/vhost/vdpa.c5
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;