[gustavoars-linux:for-next/clang-ft 2/3] drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c:6318:2: warning: unannotated fall-through between switch labels

From: kernel test robot
Date: Fri Oct 09 2020 - 01:54:13 EST

Next message: kernel test robot: "[gustavoars-linux:for-next/clang-ft 1/3] drivers/mtd/chips/cfi_cmdset_0002.c:981:1: warning: non-void function does not return a value in all control paths"
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git for-next/clang-ft
head: de6b606b07e40c037ed4f83b53ee541692a78c6e
commit: 7d30604536de43168b1eae0a4a938bcbca7786d2 [2/3] Revert "kbuild: Do not enable -Wimplicit-fallthrough for clang for now"
config: x86_64-randconfig-a005-20201009 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 4cfc4025cc1433ca5ef1c526053fc9c4bfe64109)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git/commit/?id=7d30604536de43168b1eae0a4a938bcbca7786d2
git remote add gustavoars-linux https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git
git fetch --no-tags gustavoars-linux for-next/clang-ft
git checkout 7d30604536de43168b1eae0a4a938bcbca7786d2
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

In file included from drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c:31:
In file included from include/linux/pci.h:1439:
In file included from include/linux/dmapool.h:14:
In file included from include/linux/scatterlist.h:8:
In file included from include/linux/mm.h:679:
In file included from include/linux/huge_mm.h:8:
In file included from include/linux/fs.h:33:
In file included from include/linux/percpu-rwsem.h:7:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:6:
include/linux/signal.h:241:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
case 1: ;
^
include/linux/signal.h:241:2: note: insert '__attribute__((fallthrough));' to silence this warning
case 1: ;
^
__attribute__((fallthrough));
include/linux/signal.h:241:2: note: insert 'break;' to avoid fall-through
case 1: ;
^
break;
include/linux/signal.h:253:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
case 1: ;
^
include/linux/signal.h:253:2: note: insert '__attribute__((fallthrough));' to silence this warning
case 1: ;
^
__attribute__((fallthrough));
include/linux/signal.h:253:2: note: insert 'break;' to avoid fall-through
case 1: ;
^
break;
In file included from drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c:47:
In file included from include/net/ip.h:25:
include/linux/jhash.h:102:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
case 0: /* Nothing left to add */
^
include/linux/jhash.h:102:2: note: insert 'break;' to avoid fall-through
case 0: /* Nothing left to add */
^
break;
include/linux/jhash.h:139:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
case 0: /* Nothing left to add */
^
include/linux/jhash.h:139:2: note: insert 'break;' to avoid fall-through
case 0: /* Nothing left to add */
^
break;
>> drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c:6318:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
case FW_MSG_CODE_DRV_LOAD_PORT:
^
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c:6318:2: note: insert 'break;' to avoid fall-through
case FW_MSG_CODE_DRV_LOAD_PORT:
^
break;
5 warnings generated.
--
In file included from drivers/net/ethernet/broadcom/bnxt/bnxt.c:21:
In file included from include/linux/pci.h:1439:
In file included from include/linux/dmapool.h:14:
In file included from include/linux/scatterlist.h:8:
In file included from include/linux/mm.h:679:
In file included from include/linux/huge_mm.h:8:
In file included from include/linux/fs.h:33:
In file included from include/linux/percpu-rwsem.h:7:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:6:
include/linux/signal.h:241:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
case 1: ;
^
include/linux/signal.h:241:2: note: insert '__attribute__((fallthrough));' to silence this warning
case 1: ;
^
__attribute__((fallthrough));
include/linux/signal.h:241:2: note: insert 'break;' to avoid fall-through
case 1: ;
^
break;
include/linux/signal.h:253:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
case 1: ;
^
include/linux/signal.h:253:2: note: insert '__attribute__((fallthrough));' to silence this warning
case 1: ;
^
__attribute__((fallthrough));
include/linux/signal.h:253:2: note: insert 'break;' to avoid fall-through
case 1: ;
^
break;
In file included from drivers/net/ethernet/broadcom/bnxt/bnxt.c:40:
In file included from include/net/ip.h:25:
include/linux/jhash.h:102:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
case 0: /* Nothing left to add */
^
include/linux/jhash.h:102:2: note: insert 'break;' to avoid fall-through
case 0: /* Nothing left to add */
^
break;
include/linux/jhash.h:139:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
case 0: /* Nothing left to add */
^
include/linux/jhash.h:139:2: note: insert 'break;' to avoid fall-through
case 0: /* Nothing left to add */
^
break;
>> drivers/net/ethernet/broadcom/bnxt/bnxt.c:2099:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
default:
^
drivers/net/ethernet/broadcom/bnxt/bnxt.c:2099:2: note: insert 'break;' to avoid fall-through
default:
^
break;
5 warnings generated.
--
In file included from drivers/scsi/bfa/bfa_ioc.c:11:
In file included from drivers/scsi/bfa/bfad_drv.h:23:
In file included from include/linux/pci.h:1439:
In file included from include/linux/dmapool.h:14:
In file included from include/linux/scatterlist.h:8:
In file included from include/linux/mm.h:679:
In file included from include/linux/huge_mm.h:8:
In file included from include/linux/fs.h:33:
In file included from include/linux/percpu-rwsem.h:7:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:6:
include/linux/signal.h:241:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
case 1: ;
^
include/linux/signal.h:241:2: note: insert '__attribute__((fallthrough));' to silence this warning
case 1: ;
^
__attribute__((fallthrough));
include/linux/signal.h:241:2: note: insert 'break;' to avoid fall-through
case 1: ;
^
break;
include/linux/signal.h:253:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
case 1: ;
^
include/linux/signal.h:253:2: note: insert '__attribute__((fallthrough));' to silence this warning
case 1: ;
^
__attribute__((fallthrough));
include/linux/signal.h:253:2: note: insert 'break;' to avoid fall-through
case 1: ;
^
break;
>> drivers/scsi/bfa/bfa_ioc.c:3303:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
case BFI_ABLK_I2H_PF_DELETE:
^
drivers/scsi/bfa/bfa_ioc.c:3303:2: note: insert 'break;' to avoid fall-through
case BFI_ABLK_I2H_PF_DELETE:
^
break;
3 warnings generated.

vim +6318 drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c

8a1c38d17d88c8d drivers/net/bnx2x_main.c Eilon Greenstein 2009-02-12 6309
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 6310 static void bnx2x_init_internal(struct bnx2x *bp, u32 load_code)
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 6311 {
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 6312 switch (load_code) {
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 6313 case FW_MSG_CODE_DRV_LOAD_COMMON:
f2e0899f0f275cc drivers/net/bnx2x/bnx2x_main.c Dmitry Kravkov 2010-10-06 6314 case FW_MSG_CODE_DRV_LOAD_COMMON_CHIP:
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 6315 bnx2x_init_internal_common(bp);
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 6316 /* no break */
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 6317
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 @6318 case FW_MSG_CODE_DRV_LOAD_PORT:
619c5cb6885b936 drivers/net/bnx2x/bnx2x_main.c Vlad Zolotarov 2011-06-14 6319 /* nothing to do */
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 6320 /* no break */
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 6321
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 6322 case FW_MSG_CODE_DRV_LOAD_FUNCTION:
523224a3b3cd407 drivers/net/bnx2x/bnx2x_main.c Dmitry Kravkov 2010-10-06 6323 /* internal memory per function is
523224a3b3cd407 drivers/net/bnx2x/bnx2x_main.c Dmitry Kravkov 2010-10-06 6324 initialized inside bnx2x_pf_init */
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 6325 break;
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 6326
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 6327 default:
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 6328 BNX2X_ERR("Unknown load_code (0x%x) from MCP\n", load_code);
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 6329 break;
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 6330 }
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 6331 }
471de716b782fb5 drivers/net/bnx2x_main.c Eilon Greenstein 2008-08-13 6332

:::::: The code at line 6318 was first introduced by commit
:::::: 471de716b782fb55ae0fdc040cf2722caffeeb94 bnx2x: FW Internal Memory structure

:::::: TO: Eilon Greenstein <eilong@xxxxxxxxxxxx>
:::::: CC: David S. Miller <davem@xxxxxxxxxxxxx>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

Attachment: .config.gz
Description: application/gzip

Next message: kernel test robot: "[gustavoars-linux:for-next/clang-ft 1/3] drivers/mtd/chips/cfi_cmdset_0002.c:981:1: warning: non-void function does not return a value in all control paths"
Previous message: Mauro Carvalho Chehab: "Re: [PATCH] docs: Make automarkup ready for Sphinx 3.1+"
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