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Date: Fri, 13 Dec 2013 15:01:43 -0800
From: Joe Perches <joe@...ches.com>
To: Ariel Elior <ariele@...adcom.com>
Cc: netdev@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: bnx2x_sriov.c: Missing switch/case breaks?
Hi Ariel.
I wrote a little checkpatch script to look for missing
switch/case breaks.
http://www.kernelhub.org/?msg=379933&p=2
There are _many_ instances of case blocks in sriov.c
that could be missing breaks as they use fall-throughs.
It would be good if these are actually intended to be
fall-throughs to add a /* fall-through */ comment between
each case block.
For instance:
static void bnx2x_vfop_qctor(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
[...]
switch (state) {
case BNX2X_VFOP_QCTOR_INIT:
/* has this queue already been opened? */
if (bnx2x_get_q_logical_state(bp, q_params->q_obj) ==
BNX2X_Q_LOGICAL_STATE_ACTIVE) {
DP(BNX2X_MSG_IOV,
"Entered qctor but queue was already up. Aborting gracefully\n");
goto op_done;
}
/* next state */
vfop->state = BNX2X_VFOP_QCTOR_SETUP;
q_params->cmd = BNX2X_Q_CMD_INIT;
vfop->rc = bnx2x_queue_state_change(bp, q_params);
bnx2x_vfop_finalize(vf, vfop->rc, VFOP_CONT);
case BNX2X_VFOP_QCTOR_SETUP:
/* next state */
vfop->state = BNX2X_VFOP_QCTOR_INT_EN;
/* copy pre-prepared setup params to the queue-state params */
vfop->op_p->qctor.qstate.params.setup =
vfop->op_p->qctor.prep_qsetup;
q_params->cmd = BNX2X_Q_CMD_SETUP;
vfop->rc = bnx2x_queue_state_change(bp, q_params);
bnx2x_vfop_finalize(vf, vfop->rc, VFOP_CONT);
---
Here's the checkpatch output on that file
$ ./scripts/checkpatch.pl -f --types=missing_break drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c
WARNING: Possible switch case/default not preceeded by break or fallthrough comment
#326: FILE: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:326:
+ case BNX2X_VFOP_QCTOR_SETUP:
WARNING: Possible switch case/default not preceeded by break or fallthrough comment
#339: FILE: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:339:
+ case BNX2X_VFOP_QCTOR_INT_EN:
WARNING: Possible switch case/default not preceeded by break or fallthrough comment
#416: FILE: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:416:
+ case BNX2X_VFOP_QDTOR_TERMINATE:
WARNING: Possible switch case/default not preceeded by break or fallthrough comment
#425: FILE: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:425:
+ case BNX2X_VFOP_QDTOR_CFCDEL:
WARNING: Possible switch case/default not preceeded by break or fallthrough comment
#437: FILE: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:437:
+ case BNX2X_VFOP_QDTOR_DONE:
WARNING: Possible switch case/default not preceeded by break or fallthrough comment
#622: FILE: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:622:
+ case BNX2X_VFOP_VLAN_MAC_CONFIG_SINGLE:
WARNING: Possible switch case/default not preceeded by break or fallthrough comment
#633: FILE: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:633:
+ case BNX2X_VFOP_VLAN_MAC_CHK_DONE:
WARNING: Possible switch case/default not preceeded by break or fallthrough comment
#637: FILE: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:637:
+ case BNX2X_VFOP_MAC_CONFIG_LIST:
WARNING: Possible switch case/default not preceeded by break or fallthrough comment
#650: FILE: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:650:
+ case BNX2X_VFOP_VLAN_CONFIG_LIST:
WARNING: Possible switch case/default not preceeded by break or fallthrough comment
#662: FILE: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:662:
+ default:
WARNING: Possible switch case/default not preceeded by break or fallthrough comment
#971: FILE: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:971:
+ case BNX2X_VFOP_QSETUP_DONE:
WARNING: Possible switch case/default not preceeded by break or fallthrough comment
#1068: FILE: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:1068:
+ case BNX2X_VFOP_QFLR_DONE:
WARNING: Possible switch case/default not preceeded by break or fallthrough comment
#1119: FILE: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:1119:
+ case BNX2X_VFOP_MCAST_ADD:
WARNING: Possible switch case/default not preceeded by break or fallthrough comment
#1136: FILE: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:1136:
+ case BNX2X_VFOP_MCAST_CHK_DONE:
WARNING: Possible switch case/default not preceeded by break or fallthrough comment
#1139: FILE: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:1139:
+ default:
WARNING: Possible switch case/default not preceeded by break or fallthrough comment
#1217: FILE: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:1217:
+ case BNX2X_VFOP_RXMODE_DONE:
WARNING: Possible switch case/default not preceeded by break or fallthrough comment
#1326: FILE: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:1326:
+ case BNX2X_VFOP_QTEARDOWN_DONE:
WARNING: Possible switch case/default not preceeded by break or fallthrough comment
#2985: FILE: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:2985:
+ case BNX2X_VFOP_RSS_DONE:
total: 0 errors, 18 warnings, 3683 lines checked
NOTE: Used message types: MISSING_BREAK
drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c has style problems, please review.
If any of these errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 0 warnings, 2006 lines checked
NOTE: Used message types: MISSING_BREAK
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