From: Minghao Xue <quic_mingxue@quicinc.com>
To: "Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>,
Rob Herring <robh+dt@kernel.org>
Cc: Minghao Xue <quic_mingxue@quicinc.com>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
<virtualization@lists.linux-foundation.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<quic_ztu@quicinc.com>
Subject: [PATCH v2 2/2] virtio_mmio: add support to set IRQ of a virtio device as wakeup source
Date: Fri, 10 Jun 2022 16:58:27 +0800 [thread overview]
Message-ID: <1654851507-13891-3-git-send-email-quic_mingxue@quicinc.com> (raw)
In-Reply-To: <1654851507-13891-1-git-send-email-quic_mingxue@quicinc.com>
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>
---
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 f9a36bc..c144442 100644
--- a/drivers/virtio/virtio_mmio.c
+++ b/drivers/virtio/virtio_mmio.c
@@ -486,6 +486,9 @@ 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
prev parent reply other threads:[~2022-06-10 8:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-10 8:58 [PATCH v2 0/2] virtio_mmio: add support to set IRQ of a virtio device as wakeup source Minghao Xue
2022-06-10 8:58 ` [PATCH v2 1/2] dt-bindings: virtio: mmio: add optional wakeup-source property Minghao Xue
2022-06-10 8:58 ` Minghao Xue [this message]
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