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Subjectdrivers/scsi/ufs/ufshpb.c:335:27: sparse: sparse: cast from restricted __be64
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 881007522c8fcc3785c75432dbb149ca1b78e106
commit: 63522bf3aced0a782b59f0314dbad5cdc8b14c59 scsi: ufs: core: Add L2P entry swap quirk for Micron UFS
date: 3 months ago
config: i386-randconfig-s001-20211109 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.4-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=63522bf3aced0a782b59f0314dbad5cdc8b14c59
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 63522bf3aced0a782b59f0314dbad5cdc8b14c59
# save the attached .config to linux build tree
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash drivers/scsi/ufs/

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


sparse warnings: (new ones prefixed by >>)
>> drivers/scsi/ufs/ufshpb.c:335:27: sparse: sparse: cast from restricted __be64
>> drivers/scsi/ufs/ufshpb.c:335:25: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __be64 [usertype] ppn_tmp @@ got unsigned long long [usertype] @@
drivers/scsi/ufs/ufshpb.c:335:25: sparse: expected restricted __be64 [usertype] ppn_tmp
drivers/scsi/ufs/ufshpb.c:335:25: sparse: got unsigned long long [usertype]

vim +335 drivers/scsi/ufs/ufshpb.c

324
325 static void
326 ufshpb_set_hpb_read_to_upiu(struct ufs_hba *hba, struct ufshpb_lu *hpb,
327 struct ufshcd_lrb *lrbp, u32 lpn, __be64 ppn,
328 u8 transfer_len, int read_id)
329 {
330 unsigned char *cdb = lrbp->cmd->cmnd;
331 __be64 ppn_tmp = ppn;
332 cdb[0] = UFSHPB_READ;
333
334 if (hba->dev_quirks & UFS_DEVICE_QUIRK_SWAP_L2P_ENTRY_FOR_HPB_READ)
> 335 ppn_tmp = swab64(ppn);
336
337 /* ppn value is stored as big-endian in the host memory */
338 memcpy(&cdb[6], &ppn_tmp, sizeof(__be64));
339 cdb[14] = transfer_len;
340 cdb[15] = read_id;
341
342 lrbp->cmd->cmd_len = UFS_CDB_SIZE;
343 }
344

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