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UPSTREAM: virtio_mmio: add support to set IRQ of a virtio device as wakeup source

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According to virtio_mmio wakeup flag in device trees, set its IRQ
as wakeup source in virtqueue initialization.

Signed-off-by: Minghao Xue <quic_mingxue@quicinc.com>
Message-Id: <1654851507-13891-3-git-send-email-quic_mingxue@quicinc.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Bug: 253945054
Change-Id: I6faa6fa4abb72b936f999472af6579bb059832de
(cherry picked from commit 02213273f72a43bad3a8e9c18595a2c74ee487e8)
Signed-off-by: Minghao Xue <quic_mingxue@quicinc.com>
This commit is contained in:
Minghao Xue
2022-03-08 17:55:10 +08:00
committed by Treehugger Robot
parent 56a0806bcb
commit 2f4a562ed8
1 changed files with 3 additions and 0 deletions
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3
drivers/virtio/virtio_mmio.c
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@@ -474,6 +474,9 @@ static int vm_find_vqs(struct virtio_device *vdev, unsigned 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;