On 3/16/21 11:04 PM, Jiapeng Chong wrote:
> Fix the following coccicheck warnings:
>
> ./drivers/xen/evtchn.c:412:2-5: WARNING: Use BUG_ON instead of if
> condition followed by BUG.
>
> Reported-by: Abaci Robot <abaci@linux.alibaba.com>
> Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
> ---
> drivers/xen/evtchn.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/xen/evtchn.c b/drivers/xen/evtchn.c
> index c99415a..b1c59bc 100644
> --- a/drivers/xen/evtchn.c
> +++ b/drivers/xen/evtchn.c
> @@ -408,8 +408,7 @@ static int evtchn_bind_to_user(struct per_user_data *u, evtchn_port_t port)
> err:
> /* bind failed, should close the port now */
> close.port = port;
> - if (HYPERVISOR_event_channel_op(EVTCHNOP_close, &close) != 0)
> - BUG();
> + BUG_ON(HYPERVISOR_event_channel_op(EVTCHNOP_close, &close) != 0);
Is it actually worth doing a BUG() here at all? Seems to me WARN_ON_ONCE() should be sufficient.
-boris
> del_evtchn(u, evtchn);
> return rc;
> }