On Mon, Nov 08, 2021 at 11:11:23AM +0100, Borislav Petkov wrote:
> From: Borislav Petkov <bp@xxxxxxx>
>
> Avoid homegrown notifier registration checks.
>
> No functional changes.
>
> Signed-off-by: Borislav Petkov <bp@xxxxxxx>
> Cc: linux-hyperv@xxxxxxxxxxxxxxx
Acked-by: Wei Liu <wei.liu@xxxxxxxxxx>
> ---
> drivers/hv/vmbus_drv.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
> index 392c1ac4f819..370afd108d2d 100644
> --- a/drivers/hv/vmbus_drv.c
> +++ b/drivers/hv/vmbus_drv.c
> @@ -1574,8 +1574,8 @@ static int vmbus_bus_init(void)
> * the VMbus channel connection to prevent any VMbus
> * activity after the VM panics.
> */
> - atomic_notifier_chain_register(&panic_notifier_list,
> - &hyperv_panic_block);
> + if (atomic_notifier_chain_register(&panic_notifier_list, &hyperv_panic_block))
> + pr_warn("VMBus panic notifier already registered\n");
>
> vmbus_request_offers();
>
> --
> 2.29.2
>
