From: kernel test robot <lkp@intel.com>
To: oe-kbuild@lists.linux.dev
Cc: lkp@intel.com
Subject: drivers/infiniband/hw/hns/hns_roce_hw_v2.c:309:9: sparse: sparse: dubious: x & !y
Date: Thu, 13 Apr 2023 20:21:39 +0800 [thread overview]
Message-ID: <202304132021.HuNFnDuw-lkp@intel.com> (raw)
::::::
:::::: Manual check reason: "low confidence static check warning: drivers/infiniband/hw/hns/hns_roce_hw_v2.c:309:9: sparse: sparse: dubious: x & !y"
::::::
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Wenpeng Liang <liangwenpeng@huawei.com>
CC: Jason Gunthorpe <jgg@ziepe.ca>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: de4664485abbc0529b1eec44d0061bbfe58a28fb
commit: 82600b2d3cd57428bdb03c66ae67708d3c8f7281 RDMA/hns: Use hr_reg_xxx() instead of remaining roce_set_xxx()
date: 11 months ago
:::::: branch date: 12 hours ago
:::::: commit date: 11 months ago
config: arm64-randconfig-s052-20230413 (https://download.01.org/0day-ci/archive/20230413/202304132021.HuNFnDuw-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 12.1.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-39-gce1a6720-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=82600b2d3cd57428bdb03c66ae67708d3c8f7281
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 82600b2d3cd57428bdb03c66ae67708d3c8f7281
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/infiniband/hw/hns/ drivers/remoteproc/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/r/202304132021.HuNFnDuw-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> drivers/infiniband/hw/hns/hns_roce_hw_v2.c:309:9: sparse: sparse: dubious: x & !y
drivers/infiniband/hw/hns/hns_roce_hw_v2.c:460:9: sparse: sparse: dubious: x & !y
drivers/infiniband/hw/hns/hns_roce_hw_v2.c:462:9: sparse: sparse: dubious: x & !y
vim +309 drivers/infiniband/hw/hns/hns_roce_hw_v2.c
30b707886aeb89e Weihang Li 2020-09-10 294
30b707886aeb89e Weihang Li 2020-09-10 295 static int set_rwqe_data_seg(struct ib_qp *ibqp, const struct ib_send_wr *wr,
30b707886aeb89e Weihang Li 2020-09-10 296 struct hns_roce_v2_rc_send_wqe *rc_sq_wqe,
30b707886aeb89e Weihang Li 2020-09-10 297 unsigned int *sge_ind,
30b707886aeb89e Weihang Li 2020-09-10 298 unsigned int valid_num_sge)
30b707886aeb89e Weihang Li 2020-09-10 299 {
30b707886aeb89e Weihang Li 2020-09-10 300 struct hns_roce_v2_wqe_data_seg *dseg =
30b707886aeb89e Weihang Li 2020-09-10 301 (void *)rc_sq_wqe + sizeof(struct hns_roce_v2_rc_send_wqe);
30b707886aeb89e Weihang Li 2020-09-10 302 struct hns_roce_qp *qp = to_hr_qp(ibqp);
30b707886aeb89e Weihang Li 2020-09-10 303 int j = 0;
30b707886aeb89e Weihang Li 2020-09-10 304 int i;
30b707886aeb89e Weihang Li 2020-09-10 305
82600b2d3cd5742 Wenpeng Liang 2022-05-12 306 hr_reg_write(rc_sq_wqe, RC_SEND_WQE_MSG_START_SGE_IDX,
30b707886aeb89e Weihang Li 2020-09-10 307 (*sge_ind) & (qp->sge.sge_cnt - 1));
30b707886aeb89e Weihang Li 2020-09-10 308
82600b2d3cd5742 Wenpeng Liang 2022-05-12 @309 hr_reg_write(rc_sq_wqe, RC_SEND_WQE_INLINE,
e13026578b727be Lang Cheng 2021-06-18 310 !!(wr->send_flags & IB_SEND_INLINE));
30b707886aeb89e Weihang Li 2020-09-10 311 if (wr->send_flags & IB_SEND_INLINE)
30b707886aeb89e Weihang Li 2020-09-10 312 return set_rc_inl(qp, wr, rc_sq_wqe, sge_ind);
30b707886aeb89e Weihang Li 2020-09-10 313
54d6638765b0ede Xi Wang 2020-04-28 314 if (valid_num_sge <= HNS_ROCE_SGE_IN_WQE) {
7bdee4158b37784 oulijun 2018-01-10 315 for (i = 0; i < wr->num_sge; i++) {
7bdee4158b37784 oulijun 2018-01-10 316 if (likely(wr->sg_list[i].length)) {
7bdee4158b37784 oulijun 2018-01-10 317 set_data_seg_v2(dseg, wr->sg_list + i);
7bdee4158b37784 oulijun 2018-01-10 318 dseg++;
7bdee4158b37784 oulijun 2018-01-10 319 }
7bdee4158b37784 oulijun 2018-01-10 320 }
7bdee4158b37784 oulijun 2018-01-10 321 } else {
30b707886aeb89e Weihang Li 2020-09-10 322 for (i = 0; i < wr->num_sge && j < HNS_ROCE_SGE_IN_WQE; i++) {
7bdee4158b37784 oulijun 2018-01-10 323 if (likely(wr->sg_list[i].length)) {
7bdee4158b37784 oulijun 2018-01-10 324 set_data_seg_v2(dseg, wr->sg_list + i);
7bdee4158b37784 oulijun 2018-01-10 325 dseg++;
468d020e2f02867 Lijun Ou 2020-01-09 326 j++;
7bdee4158b37784 oulijun 2018-01-10 327 }
7bdee4158b37784 oulijun 2018-01-10 328 }
7bdee4158b37784 oulijun 2018-01-10 329
0fd0175e30e487f Lang Cheng 2020-11-28 330 set_extend_sge(qp, wr->sg_list + i, sge_ind,
0fd0175e30e487f Lang Cheng 2020-11-28 331 valid_num_sge - HNS_ROCE_SGE_IN_WQE);
7bdee4158b37784 oulijun 2018-01-10 332 }
7bdee4158b37784 oulijun 2018-01-10 333
82600b2d3cd5742 Wenpeng Liang 2022-05-12 334 hr_reg_write(rc_sq_wqe, RC_SEND_WQE_SGE_NUM, valid_num_sge);
7bdee4158b37784 oulijun 2018-01-10 335
7bdee4158b37784 oulijun 2018-01-10 336 return 0;
7bdee4158b37784 oulijun 2018-01-10 337 }
7bdee4158b37784 oulijun 2018-01-10 338
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
next reply other threads:[~2023-04-13 12:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-13 12:21 kernel test robot [this message]
-- strict thread matches above, loose matches on Subject: below --
2023-02-10 4:47 drivers/infiniband/hw/hns/hns_roce_hw_v2.c:309:9: sparse: sparse: dubious: x & !y kernel test robot
2022-11-28 14:16 kernel test robot
2022-11-15 23:07 kernel test robot
2022-10-29 4:59 kernel test robot
2022-09-10 23:39 kernel test robot
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