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Date: Sun, 29 Aug 2021 11:49:52 +0800
From: kernel test robot <lkp@...el.com>
To: Michael Chan <michael.chan@...adcom.com>, davem@...emloft.net
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
netdev@...r.kernel.org, kuba@...nel.org, edwin.peer@...adcom.com,
gospo@...adcom.com
Subject: Re: [PATCH net-next 09/11] bnxt_en: update all firmware calls to use
the new APIs
Hi Michael,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on net-next/master]
url: https://github.com/0day-ci/linux/commits/Michael-Chan/bnxt_en-Implement-new-driver-APIs-to-send-FW-messages/20210829-060031
base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git c77225119daa0ca0a9c6c007945c0a87b3e4a2e8
config: i386-randconfig-a002-20210829 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 4e1a164d7bd53653f79decc121afe784d2fde0a7)
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
# https://github.com/0day-ci/linux/commit/0202eb069086d82c68032e9f5db76e0b4cd5a4ca
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Michael-Chan/bnxt_en-Implement-new-driver-APIs-to-send-FW-messages/20210829-060031
git checkout 0202eb069086d82c68032e9f5db76e0b4cd5a4ca
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
clang-14: warning: optimization flag '-falign-jumps=0' is not supported [-Wignored-optimization-argument]
In file included from drivers/net/ethernet/broadcom/bnxt/bnxt.c:11:
In file included from include/linux/module.h:14:
In file included from include/linux/buildid.h:5:
In file included from include/linux/mm_types.h:9:
In file included from include/linux/spinlock.h:51:
In file included from include/linux/preempt.h:78:
In file included from arch/x86/include/asm/preempt.h:7:
In file included from include/linux/thread_info.h:60:
arch/x86/include/asm/thread_info.h:172:13: warning: calling '__builtin_frame_address' with a nonzero argument is unsafe [-Wframe-address]
oldframe = __builtin_frame_address(1);
^~~~~~~~~~~~~~~~~~~~~~~~~~
arch/x86/include/asm/thread_info.h:174:11: warning: calling '__builtin_frame_address' with a nonzero argument is unsafe [-Wframe-address]
frame = __builtin_frame_address(2);
^~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/net/ethernet/broadcom/bnxt/bnxt.c:5996:2: warning: variable 'req' is uninitialized when used here [-Wuninitialized]
req->fid = cpu_to_le16(fid);
^~~
drivers/net/ethernet/broadcom/bnxt/bnxt.c:5990:34: note: initialize the variable 'req' to silence this warning
struct hwrm_func_qcfg_input *req;
^
= NULL
3 warnings generated.
--
clang-14: warning: optimization flag '-falign-jumps=0' is not supported [-Wignored-optimization-argument]
In file included from drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c:11:
In file included from include/linux/ethtool.h:17:
In file included from include/linux/compat.h:14:
In file included from include/linux/sem.h:5:
In file included from include/uapi/linux/sem.h:5:
In file included from include/linux/ipc.h:5:
In file included from include/linux/spinlock.h:51:
In file included from include/linux/preempt.h:78:
In file included from arch/x86/include/asm/preempt.h:7:
In file included from include/linux/thread_info.h:60:
arch/x86/include/asm/thread_info.h:172:13: warning: calling '__builtin_frame_address' with a nonzero argument is unsafe [-Wframe-address]
oldframe = __builtin_frame_address(1);
^~~~~~~~~~~~~~~~~~~~~~~~~~
arch/x86/include/asm/thread_info.h:174:11: warning: calling '__builtin_frame_address' with a nonzero argument is unsafe [-Wframe-address]
frame = __builtin_frame_address(2);
^~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c:1163:7: warning: variable 'rc' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
if (is_valid_ether_addr(bp->vf.mac_addr))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c:1178:6: note: uninitialized use occurs here
if (rc && strict) {
^~
drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c:1163:3: note: remove the 'if' if its condition is always true
if (is_valid_ether_addr(bp->vf.mac_addr))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c:1157:8: note: initialize the variable 'rc' to silence this warning
int rc;
^
= 0
3 warnings generated.
vim +/req +5996 drivers/net/ethernet/broadcom/bnxt/bnxt.c
5986
5987 int __bnxt_hwrm_get_tx_rings(struct bnxt *bp, u16 fid, int *tx_rings)
5988 {
5989 struct hwrm_func_qcfg_output *resp;
5990 struct hwrm_func_qcfg_input *req;
5991 int rc;
5992
5993 if (bp->hwrm_spec_code < 0x10601)
5994 return 0;
5995
> 5996 req->fid = cpu_to_le16(fid);
5997 resp = hwrm_req_hold(bp, req);
5998 rc = hwrm_req_send(bp, req);
5999 if (!rc)
6000 *tx_rings = le16_to_cpu(resp->alloc_tx_rings);
6001
6002 hwrm_req_drop(bp, req);
6003 return rc;
6004 }
6005
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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