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Message-ID: <202212180401.2gqIsyVy-lkp@intel.com>
Date:   Sun, 18 Dec 2022 04:39:35 +0800
From:   kernel test robot <lkp@...el.com>
To:     Frank Li <frank.li@....com>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Lorenzo Pieralisi <lpieralisi@...nel.org>
Subject: drivers/pci/endpoint/functions/pci-epf-vntb.c:574:38: sparse:
 sparse: incorrect type in argument 2 (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   f9ff5644bcc04221bae56f922122f2b7f5d24d62
commit: 0c031262d2ddfb938f9668d620d7ed674771646c PCI: endpoint: pci-epf-vntb: Fix call pci_epc_mem_free_addr() in error path
date:   3 weeks ago
config: powerpc-randconfig-s051-20221218
compiler: powerpc-linux-gcc (GCC) 12.1.0
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: v0.6.4-39-gce1a6720-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c031262d2ddfb938f9668d620d7ed674771646c
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 0c031262d2ddfb938f9668d620d7ed674771646c
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=powerpc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/pci/endpoint/functions/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>

sparse warnings: (new ones prefixed by >>)
   drivers/pci/endpoint/functions/pci-epf-vntb.c:556:17: 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:556:17: sparse:     expected void [noderef] __iomem *mw_addr
   drivers/pci/endpoint/functions/pci-epf-vntb.c:556:17: sparse:     got void *
>> drivers/pci/endpoint/functions/pci-epf-vntb.c:574:38: 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:574:38: sparse:     expected void *addr
   drivers/pci/endpoint/functions/pci-epf-vntb.c:574:38: sparse:     got void [noderef] __iomem *mw_addr
   drivers/pci/endpoint/functions/pci-epf-vntb.c:590:41: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void *addr @@     got void [noderef] __iomem *epf_db @@
   drivers/pci/endpoint/functions/pci-epf-vntb.c:590:41: sparse:     expected void *addr
   drivers/pci/endpoint/functions/pci-epf-vntb.c:590:41: sparse:     got void [noderef] __iomem *epf_db
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1127:33: 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:1127:33: sparse:     expected void [noderef] __iomem *base
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1127:33: sparse:     got struct epf_ntb_ctrl *reg
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1138:33: 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:1138:33: sparse:     expected void [noderef] __iomem *base
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1138:33: sparse:     got struct epf_ntb_ctrl *reg
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1149:33: 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:1149:33: sparse:     expected void [noderef] __iomem *base
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1149:33: sparse:     got struct epf_ntb_ctrl *reg
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1161:33: 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:1161:33: sparse:     expected void [noderef] __iomem *base
   drivers/pci/endpoint/functions/pci-epf-vntb.c:1161:33: sparse:     got struct epf_ntb_ctrl *reg

vim +574 drivers/pci/endpoint/functions/pci-epf-vntb.c

   523	
   524	/**
   525	 * epf_ntb_db_bar_init() - Configure Doorbell window BARs
   526	 * @ntb: NTB device that facilitates communication between HOST and VHOST
   527	 *
   528	 * Returns: Zero for success, or an error code in case of failure
   529	 */
   530	static int epf_ntb_db_bar_init(struct epf_ntb *ntb)
   531	{
   532		const struct pci_epc_features *epc_features;
   533		u32 align;
   534		struct device *dev = &ntb->epf->dev;
   535		int ret;
   536		struct pci_epf_bar *epf_bar;
   537		void __iomem *mw_addr;
   538		enum pci_barno barno;
   539		size_t size = 4 * ntb->db_count;
   540	
   541		epc_features = pci_epc_get_features(ntb->epf->epc,
   542						    ntb->epf->func_no,
   543						    ntb->epf->vfunc_no);
   544		align = epc_features->align;
   545	
   546		if (size < 128)
   547			size = 128;
   548	
   549		if (align)
   550			size = ALIGN(size, align);
   551		else
   552			size = roundup_pow_of_two(size);
   553	
   554		barno = ntb->epf_ntb_bar[BAR_DB];
   555	
   556		mw_addr = pci_epf_alloc_space(ntb->epf, size, barno, align, 0);
   557		if (!mw_addr) {
   558			dev_err(dev, "Failed to allocate OB address\n");
   559			return -ENOMEM;
   560		}
   561	
   562		ntb->epf_db = mw_addr;
   563	
   564		epf_bar = &ntb->epf->bar[barno];
   565	
   566		ret = pci_epc_set_bar(ntb->epf->epc, ntb->epf->func_no, ntb->epf->vfunc_no, epf_bar);
   567		if (ret) {
   568			dev_err(dev, "Doorbell BAR set failed\n");
   569				goto err_alloc_peer_mem;
   570		}
   571		return ret;
   572	
   573	err_alloc_peer_mem:
 > 574		pci_epf_free_space(ntb->epf, mw_addr, barno, 0);
   575		return -1;
   576	}
   577	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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