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Subjectdrivers/ntb/hw/amd/ntb_hw_amd.c:367:29: sparse: cast removes address space of expression
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 6b5f04b6cf8ebab9a65d9c0026c650bb2538fd0f
commit: a1b3695820aa490e58915d720a1438069813008b NTB: Add support for AMD PCI-Express Non-Transparent Bridge
date: 8 weeks ago
reproduce:
# apt-get install sparse
git checkout a1b3695820aa490e58915d720a1438069813008b
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__


sparse warnings: (new ones prefixed by >>)

>> drivers/ntb/hw/amd/ntb_hw_amd.c:367:29: sparse: cast removes address space of expression
drivers/ntb/hw/amd/ntb_hw_amd.c:427:31: sparse: cast removes address space of expression

vim +367 drivers/ntb/hw/amd/ntb_hw_amd.c

351
352 spin_lock_irqsave(&ndev->db_mask_lock, flags);
353 ndev->db_mask &= ~db_bits;
354 writew((u16)ndev->db_mask, mmio + AMD_DBMASK_OFFSET);
355 spin_unlock_irqrestore(&ndev->db_mask_lock, flags);
356
357 return 0;
358 }
359
360 static int amd_ntb_peer_db_addr(struct ntb_dev *ntb,
361 phys_addr_t *db_addr,
362 resource_size_t *db_size)
363 {
364 struct amd_ntb_dev *ndev = ntb_ndev(ntb);
365
366 if (db_addr)
> 367 *db_addr = (phys_addr_t)(ndev->peer_mmio + AMD_DBREQ_OFFSET);
368 if (db_size)
369 *db_size = sizeof(u32);
370
371 return 0;
372 }
373
374 static int amd_ntb_peer_db_set(struct ntb_dev *ntb, u64 db_bits)
375 {

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation

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