Quoting Ihor Matushchak (2019-07-02 17:48:18)
> 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: Ihor Matushchak <ihor.matushc...@foobox.net>
Reviewed-by: Ivan T. Ivanov <iivanov...@gmail.com>
Thanks!
> ---
> Changes in v2:
> Don't overwrite error code value.
>
> drivers/virtio/virtio_mmio.c | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
> index f363fbeb5ab0..e09edb5c5e06 100644
> --- a/drivers/virtio/virtio_mmio.c
> +++ b/drivers/virtio/virtio_mmio.c
> @@ -463,9 +463,14 @@ static int vm_find_vqs(struct virtio_device *vdev,
> unsigned nvqs,
> struct irq_affinity *desc)
> {
> 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;
>
> + if (irq < 0) {
> + dev_err(&vdev->dev, "Cannot get IRQ resource\n");
> + return irq;
> + }
> +
> err = request_irq(irq, vm_interrupt, IRQF_SHARED,
> dev_name(&vdev->dev), vm_dev);
> if (err)
> --
> 2.17.1
>
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