linux-kernel - Re: [PATCH] s390/net: Mark expected switch fall-throughs

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Date:   Mon, 5 Aug 2019 09:25:24 +0200
From:   Julian Wiedmann <jwi@...ux.ibm.com>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Ursula Braun <ubraun@...ux.ibm.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>
Cc:     linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
        Kees Cook <keescook@...omium.org>
Subject: Re: [PATCH] s390/net: Mark expected switch fall-throughs

On 30.07.19 02:17, Gustavo A. R. Silva wrote:
> Mark switch cases where we are expecting to fall through.
> 
> This patch fixes the following warnings (Building: s390):
> 
> drivers/s390/net/ctcm_fsms.c: In function ‘ctcmpc_chx_attnbusy’:
> drivers/s390/net/ctcm_fsms.c:1703:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
>    if (grp->changed_side == 1) {
>       ^
> drivers/s390/net/ctcm_fsms.c:1707:2: note: here
>   case MPCG_STATE_XID0IOWAIX:
>   ^~~~
> 
> drivers/s390/net/ctcm_mpc.c: In function ‘ctc_mpc_alloc_channel’:
> drivers/s390/net/ctcm_mpc.c:358:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
>    if (callback)
>       ^
> drivers/s390/net/ctcm_mpc.c:360:2: note: here
>   case MPCG_STATE_XID0IOWAIT:
>   ^~~~
> 
> drivers/s390/net/ctcm_mpc.c: In function ‘mpc_action_timeout’:
> drivers/s390/net/ctcm_mpc.c:1469:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
>    if ((fsm_getstate(rch->fsm) == CH_XID0_PENDING) &&
>       ^
> drivers/s390/net/ctcm_mpc.c:1472:2: note: here
>   default:
>   ^~~~~~~
> drivers/s390/net/ctcm_mpc.c: In function ‘mpc_send_qllc_discontact’:
> drivers/s390/net/ctcm_mpc.c:2087:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
>    if (grp->estconnfunc) {
>       ^
> drivers/s390/net/ctcm_mpc.c:2092:2: note: here
>   case MPCG_STATE_FLOWC:
>   ^~~~
> 
> drivers/s390/net/qeth_l2_main.c: In function ‘qeth_l2_process_inbound_buffer’:
> drivers/s390/net/qeth_l2_main.c:328:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
>     if (IS_OSN(card)) {
>        ^
> drivers/s390/net/qeth_l2_main.c:337:3: note: here
>    default:
>    ^~~~~~~
> 
> Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
> ---
>  drivers/s390/net/ctcm_fsms.c    | 1 +
>  drivers/s390/net/ctcm_mpc.c     | 3 +++
>  drivers/s390/net/qeth_l2_main.c | 2 +-
>  3 files changed, 5 insertions(+), 1 deletion(-)
> 

Applied, thanks.