From 02213273f72a43bad3a8e9c18595a2c74ee487e8 Mon Sep 17 00:00:00 2001 From: Minghao Xue Date: Fri, 10 Jun 2022 16:58:27 +0800 Subject: [PATCH] virtio_mmio: add support to set IRQ of a virtio device as wakeup source According to virtio_mmio wakeup flag in device trees, set its IRQ as wakeup source in virtqueue initialization. Signed-off-by: Minghao Xue Message-Id: <1654851507-13891-3-git-send-email-quic_mingxue@quicinc.com> Signed-off-by: Michael S. Tsirkin --- drivers/virtio/virtio_mmio.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index 083ff1e..945cb8f 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -487,6 +487,9 @@ static int vm_find_vqs(struct virtio_device *vdev, unsigned int nvqs, if (err) return err; + if (of_property_read_bool(vm_dev->pdev->dev.of_node, "wakeup-source")) + enable_irq_wake(irq); + for (i = 0; i < nvqs; ++i) { if (!names[i]) { vqs[i] = NULL; -- 2.7.4