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Tue, 12 Sep 2023 03:06:09 +0000 Date: Tue, 12 Sep 2023 11:06:02 +0800 From: kernel test robot To: Frank Li Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Lorenzo Pieralisi Subject: drivers/pci/endpoint/functions/pci-epf-vntb.c:559:21: sparse: sparse: incorrect type in assignment (different address spaces) Message-ID: <202309121102.XRIDbaLp-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 0bb80ecc33a8fb5a682236443c1e740d5c917d1d commit: 01dcec6d57ce62d535b2016fc4a617627fff506d PCI: endpoint: pci-epf-vntb: Fix sparse build warning for epf_db date: 10 months ago config: i386-randconfig-063-20230912 (https://download.01.org/0day-ci/archive/20230912/202309121102.XRIDbaLp-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230912/202309121102.XRIDbaLp-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202309121102.XRIDbaLp-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) drivers/pci/endpoint/functions/pci-epf-vntb.c:553:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __iomem *mw_addr @@ got void * @@ drivers/pci/endpoint/functions/pci-epf-vntb.c:553:17: sparse: expected void [noderef] __iomem *mw_addr drivers/pci/endpoint/functions/pci-epf-vntb.c:553:17: sparse: got void * >> drivers/pci/endpoint/functions/pci-epf-vntb.c:559:21: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned int [usertype] *epf_db @@ got void [noderef] __iomem *mw_addr @@ drivers/pci/endpoint/functions/pci-epf-vntb.c:559:21: sparse: expected unsigned int [usertype] *epf_db drivers/pci/endpoint/functions/pci-epf-vntb.c:559:21: sparse: got void [noderef] __iomem *mw_addr drivers/pci/endpoint/functions/pci-epf-vntb.c:571:38: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void *addr @@ got void [noderef] __iomem *mw_addr @@ drivers/pci/endpoint/functions/pci-epf-vntb.c:571:38: sparse: expected void *addr drivers/pci/endpoint/functions/pci-epf-vntb.c:571:38: sparse: got void [noderef] __iomem *mw_addr drivers/pci/endpoint/functions/pci-epf-vntb.c:1124:33: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void [noderef] __iomem *base @@ got struct epf_ntb_ctrl *reg @@ drivers/pci/endpoint/functions/pci-epf-vntb.c:1124:33: sparse: expected void [noderef] __iomem *base drivers/pci/endpoint/functions/pci-epf-vntb.c:1124:33: sparse: got struct epf_ntb_ctrl *reg drivers/pci/endpoint/functions/pci-epf-vntb.c:1135:33: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void [noderef] __iomem *base @@ got struct epf_ntb_ctrl *reg @@ drivers/pci/endpoint/functions/pci-epf-vntb.c:1135:33: sparse: expected void [noderef] __iomem *base drivers/pci/endpoint/functions/pci-epf-vntb.c:1135:33: sparse: got struct epf_ntb_ctrl *reg drivers/pci/endpoint/functions/pci-epf-vntb.c:1146:33: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void [noderef] __iomem *base @@ got struct epf_ntb_ctrl *reg @@ drivers/pci/endpoint/functions/pci-epf-vntb.c:1146:33: sparse: expected void [noderef] __iomem *base drivers/pci/endpoint/functions/pci-epf-vntb.c:1146:33: sparse: got struct epf_ntb_ctrl *reg drivers/pci/endpoint/functions/pci-epf-vntb.c:1158:33: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void [noderef] __iomem *base @@ got struct epf_ntb_ctrl *reg @@ drivers/pci/endpoint/functions/pci-epf-vntb.c:1158:33: sparse: expected void [noderef] __iomem *base drivers/pci/endpoint/functions/pci-epf-vntb.c:1158:33: sparse: got struct epf_ntb_ctrl *reg vim +559 drivers/pci/endpoint/functions/pci-epf-vntb.c e35f56bb03304a Frank Li 2022-02-22 520 e35f56bb03304a Frank Li 2022-02-22 521 /** e35f56bb03304a Frank Li 2022-02-22 522 * epf_ntb_db_bar_init() - Configure Doorbell window BARs 9298804840457c Frank Li 2022-11-02 523 * @ntb: NTB device that facilitates communication between HOST and VHOST 9298804840457c Frank Li 2022-11-02 524 * 9298804840457c Frank Li 2022-11-02 525 * Returns: Zero for success, or an error code in case of failure e35f56bb03304a Frank Li 2022-02-22 526 */ e35f56bb03304a Frank Li 2022-02-22 527 static int epf_ntb_db_bar_init(struct epf_ntb *ntb) e35f56bb03304a Frank Li 2022-02-22 528 { e35f56bb03304a Frank Li 2022-02-22 529 const struct pci_epc_features *epc_features; e35f56bb03304a Frank Li 2022-02-22 530 u32 align; e35f56bb03304a Frank Li 2022-02-22 531 struct device *dev = &ntb->epf->dev; e35f56bb03304a Frank Li 2022-02-22 532 int ret; e35f56bb03304a Frank Li 2022-02-22 533 struct pci_epf_bar *epf_bar; e35f56bb03304a Frank Li 2022-02-22 534 void __iomem *mw_addr; e35f56bb03304a Frank Li 2022-02-22 535 enum pci_barno barno; 2b35c886556a24 Frank Li 2022-11-02 536 size_t size = sizeof(u32) * ntb->db_count; e35f56bb03304a Frank Li 2022-02-22 537 e35f56bb03304a Frank Li 2022-02-22 538 epc_features = pci_epc_get_features(ntb->epf->epc, e35f56bb03304a Frank Li 2022-02-22 539 ntb->epf->func_no, e35f56bb03304a Frank Li 2022-02-22 540 ntb->epf->vfunc_no); e35f56bb03304a Frank Li 2022-02-22 541 align = epc_features->align; e35f56bb03304a Frank Li 2022-02-22 542 e35f56bb03304a Frank Li 2022-02-22 543 if (size < 128) e35f56bb03304a Frank Li 2022-02-22 544 size = 128; e35f56bb03304a Frank Li 2022-02-22 545 e35f56bb03304a Frank Li 2022-02-22 546 if (align) e35f56bb03304a Frank Li 2022-02-22 547 size = ALIGN(size, align); e35f56bb03304a Frank Li 2022-02-22 548 else e35f56bb03304a Frank Li 2022-02-22 549 size = roundup_pow_of_two(size); e35f56bb03304a Frank Li 2022-02-22 550 e35f56bb03304a Frank Li 2022-02-22 551 barno = ntb->epf_ntb_bar[BAR_DB]; e35f56bb03304a Frank Li 2022-02-22 552 e35f56bb03304a Frank Li 2022-02-22 553 mw_addr = pci_epf_alloc_space(ntb->epf, size, barno, align, 0); e35f56bb03304a Frank Li 2022-02-22 554 if (!mw_addr) { e35f56bb03304a Frank Li 2022-02-22 555 dev_err(dev, "Failed to allocate OB address\n"); e35f56bb03304a Frank Li 2022-02-22 556 return -ENOMEM; e35f56bb03304a Frank Li 2022-02-22 557 } e35f56bb03304a Frank Li 2022-02-22 558 e35f56bb03304a Frank Li 2022-02-22 @559 ntb->epf_db = mw_addr; e35f56bb03304a Frank Li 2022-02-22 560 e35f56bb03304a Frank Li 2022-02-22 561 epf_bar = &ntb->epf->bar[barno]; e35f56bb03304a Frank Li 2022-02-22 562 e35f56bb03304a Frank Li 2022-02-22 563 ret = pci_epc_set_bar(ntb->epf->epc, ntb->epf->func_no, ntb->epf->vfunc_no, epf_bar); e35f56bb03304a Frank Li 2022-02-22 564 if (ret) { e35f56bb03304a Frank Li 2022-02-22 565 dev_err(dev, "Doorbell BAR set failed\n"); e35f56bb03304a Frank Li 2022-02-22 566 goto err_alloc_peer_mem; e35f56bb03304a Frank Li 2022-02-22 567 } e35f56bb03304a Frank Li 2022-02-22 568 return ret; e35f56bb03304a Frank Li 2022-02-22 569 e35f56bb03304a Frank Li 2022-02-22 570 err_alloc_peer_mem: 0c031262d2ddfb Frank Li 2022-11-02 571 pci_epf_free_space(ntb->epf, mw_addr, barno, 0); e35f56bb03304a Frank Li 2022-02-22 572 return -1; e35f56bb03304a Frank Li 2022-02-22 573 } e35f56bb03304a Frank Li 2022-02-22 574 :::::: The code at line 559 was first introduced by commit :::::: e35f56bb03304abc92c928b641af41ca372966bb PCI: endpoint: Support NTB transfer between RC and EP :::::: TO: Frank Li :::::: CC: Jon Mason -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki