On Tue, May 25, 2021 at 04:17:33PM -0700, Haiyang Zhang wrote:
> Add check for hv_is_hyperv_initialized() at the top of init_hv_pci_drv(),
> so if the pci-hyperv driver is force-loaded on non Hyper-V platforms, the
> init_hv_pci_drv() will exit immediately, without any side effects, like
> assignments to hvpci_block_ops, etc.
>
> Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
> Reported-and-tested-by: Mohammad Alqayeem <mohammad.alqyeem@xxxxxxxxxxx>
Reviewed-by: Wei Liu <wei.liu@xxxxxxxxxx>
> ---
> drivers/pci/controller/pci-hyperv.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c
> index 6511648271b2..bebe3eeebc4e 100644
> --- a/drivers/pci/controller/pci-hyperv.c
> +++ b/drivers/pci/controller/pci-hyperv.c
> @@ -3476,6 +3476,9 @@ static void __exit exit_hv_pci_drv(void)
>
> static int __init init_hv_pci_drv(void)
> {
> + if (!hv_is_hyperv_initialized())
> + return -ENODEV;
> +
> /* Set the invalid domain number's bit, so it will not be used */
> set_bit(HVPCI_DOM_INVALID, hvpci_dom_map);
>
> --
> 2.25.1
>
