virtio-mmio: add error check for platform_get_irq (5e663f04) · Commits · 戴 / test

in vm_find_vqs() irq has a wrong type so, in case of no IRQ resource defined, wrong parameter will be passed to request_irq() Signed-off-by:

drivers/virtio/virtio_mmio.c

+6 −1

Original line number	Original line	Diff line number	Diff line
	@@ -463,9 +463,14 @@ static int vm_find_vqs(struct virtio_device *vdev, unsigned nvqs,
	struct irq_affinity *desc)		struct irq_affinity *desc)
	{		{
	struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev);		struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev);
	unsigned int irq = platform_get_irq(vm_dev->pdev, 0);		int irq = platform_get_irq(vm_dev->pdev, 0);
	int i, err, queue_idx = 0;		int i, err, queue_idx = 0;

			if (irq < 0) {
			dev_err(&vdev->dev, "Cannot get IRQ resource\n");
			return irq;
			}

	err = request_irq(irq, vm_interrupt, IRQF_SHARED,		err = request_irq(irq, vm_interrupt, IRQF_SHARED,
	dev_name(&vdev->dev), vm_dev);		dev_name(&vdev->dev), vm_dev);
	if (err)		if (err)