tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 29c395c77a9a514c5857c45ceae2665e9bd99ac7 commit: 488edafb1120f715bebd80b6fe4089f83fb082b2 scsi: ufs-mediatek: Introduce low-power mode for device power supply config: arm64-randconfig-s031-20210225 (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 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: v0.6.3-229-g60c1f270-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=488edafb1120f715bebd80b6fe4089f83fb082b2 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 488edafb1120f715bebd80b6fe4089f83fb082b2 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <l...@intel.com>
"sparse warnings: (new ones prefixed by >>)"
drivers/scsi/ufs/ufs-mediatek.c:182:5: sparse: sparse: symbol
'ufs_mtk_wait_link_state' was not declared. Should it be static?
>> drivers/scsi/ufs/ufs-mediatek.c:530:17: sparse: sparse: dubious: x & !y
vim +530 drivers/scsi/ufs/ufs-mediatek.c
488edafb1120f7 Stanley Chu 2020-06-01 525 static void
ufs_mtk_vreg_set_lpm(struct ufs_hba *hba, bool lpm)
488edafb1120f7 Stanley Chu 2020-06-01 526 {
488edafb1120f7 Stanley Chu 2020-06-01 527 if (!hba->vreg_info.vccq2)
488edafb1120f7 Stanley Chu 2020-06-01 528 return;
488edafb1120f7 Stanley Chu 2020-06-01 529
488edafb1120f7 Stanley Chu 2020-06-01 @530 if (lpm &
!hba->vreg_info.vcc->enabled)
This works because both sides are bool, but why not just use &&?
488edafb1120f7 Stanley Chu 2020-06-01 531
regulator_set_mode(hba->vreg_info.vccq2->reg,
488edafb1120f7 Stanley Chu 2020-06-01 532
REGULATOR_MODE_IDLE);
488edafb1120f7 Stanley Chu 2020-06-01 533 else if (!lpm)
488edafb1120f7 Stanley Chu 2020-06-01 534
regulator_set_mode(hba->vreg_info.vccq2->reg,
488edafb1120f7 Stanley Chu 2020-06-01 535
REGULATOR_MODE_NORMAL);
488edafb1120f7 Stanley Chu 2020-06-01 536 }
---
0-DAY CI Kernel Test Service, Intel Corporation
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.config.gz
Description: application/gzip
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