Messages in this thread | | | Date | Sat, 19 Mar 2016 22:58:30 +0800 | From | kbuild test robot <> | Subject | drivers/ntb/hw/amd/ntb_hw_amd.c:367:29: sparse: cast removes address space of expression |
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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 {
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