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s390/net: Mark expected switch fall-throughs

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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:
   ^~~~~~~

Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
This commit is contained in:
Gustavo A. R. Silva 2019-07-29 19:13:54 -05:00
parent 3d86c7ad56
commit 7b7331511e
3 changed files with 5 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/s390/net/ctcm_fsms.c
View File

@ -1704,6 +1704,7 @@ static void ctcmpc_chx_attnbusy(fsm_instance *fsm, int event, void *arg)
grp->changed_side = 2;
break;
}
/* Else, fall through */
case MPCG_STATE_XID0IOWAIX:
case MPCG_STATE_XID7INITW:
case MPCG_STATE_XID7INITX:

3
drivers/s390/net/ctcm_mpc.c
View File

@ -357,6 +357,7 @@ int ctc_mpc_alloc_channel(int port_num, void (*callback)(int, int))
/*fsm_newstate(grp->fsm, MPCG_STATE_XID2INITW);*/
if (callback)
grp->send_qllc_disc = 1;
/* Else, fall through */
case MPCG_STATE_XID0IOWAIT:
fsm_deltimer(&grp->timer);
grp->outstanding_xid2 = 0;
@ -1469,6 +1470,7 @@ static void mpc_action_timeout(fsm_instance *fi, int event, void *arg)
if ((fsm_getstate(rch->fsm) == CH_XID0_PENDING) &&
(fsm_getstate(wch->fsm) == CH_XID0_PENDING))
break;
/* Else, fall through */
default:
fsm_event(grp->fsm, MPCG_EVENT_INOP, dev);
}
@ -2089,6 +2091,7 @@ static int mpc_send_qllc_discontact(struct net_device *dev)
grp->estconnfunc = NULL;
break;
}
/* Else, fall through */
case MPCG_STATE_FLOWC:
case MPCG_STATE_READY:
grp->send_qllc_disc = 2;

2
drivers/s390/net/qeth_l2_main.c
View File

@ -333,7 +333,7 @@ static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
card->osn_info.data_cb(skb);
break;
}
/* else unknown */
/* Else, fall through */
default:
dev_kfree_skb_any(skb);
QETH_CARD_TEXT(card, 3, "inbunkno");