tree:   https://github.com/hnaz/linux-mm master
head:   2932a9e66c580f3c8d95ec27716d437198fb4c94
commit: 07b12d9b4d4dfc2f4708b795d5abeab3131278f0 [412/421] iomap: constify ioreadX() iomem argument (as in generic implementation)
config: alpha-randconfig-s031-20201012 (attached as .config)
compiler: alpha-linux-gcc (GCC) 9.3.0
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: v0.6.3-rc1-dirty
        # https://github.com/hnaz/linux-mm/commit/07b12d9b4d4dfc2f4708b795d5abeab3131278f0
        git remote add hnaz-linux-mm https://github.com/hnaz/linux-mm
        git fetch --no-tags hnaz-linux-mm master
        git checkout 07b12d9b4d4dfc2f4708b795d5abeab3131278f0
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=alpha 

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/pci/switch/switchtec.c:943:31: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected unsigned int [noderef] [usertype] __iomem * @@     got void * @@
   drivers/pci/switch/switchtec.c:943:31: sparse:     expected unsigned int [noderef] [usertype] __iomem *
   drivers/pci/switch/switchtec.c:943:31: sparse:     got void *
   drivers/pci/switch/switchtec.c:951:39: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected unsigned int [noderef] [usertype] __iomem * @@     got void * @@
   drivers/pci/switch/switchtec.c:951:39: sparse:     expected unsigned int [noderef] [usertype] __iomem *
   drivers/pci/switch/switchtec.c:951:39: sparse:     got void *
   drivers/pci/switch/switchtec.c:954:39: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected unsigned int [noderef] [usertype] __iomem * @@     got void * @@
   drivers/pci/switch/switchtec.c:954:39: sparse:     expected unsigned int [noderef] [usertype] __iomem *
   drivers/pci/switch/switchtec.c:954:39: sparse:     got void *
   drivers/pci/switch/switchtec.c:1067:32: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void const [noderef] __user *from @@     got struct switchtec_ioctl_pff_port *up @@
   drivers/pci/switch/switchtec.c:1067:32: sparse:     expected void const [noderef] __user *from
   drivers/pci/switch/switchtec.c:1067:32: sparse:     got struct switchtec_ioctl_pff_port *up
   drivers/pci/switch/switchtec.c:1072:22: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct part_cfg_regs *pcfg @@     got struct part_cfg_regs [noderef] __iomem * @@
   drivers/pci/switch/switchtec.c:1072:22: sparse:     expected struct part_cfg_regs *pcfg
   drivers/pci/switch/switchtec.c:1072:22: sparse:     got struct part_cfg_regs [noderef] __iomem *
>> drivers/pci/switch/switchtec.c:1075:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const [noderef] __iomem *addr @@     got unsigned int * @@
>> drivers/pci/switch/switchtec.c:1075:33: sparse:     expected void const [noderef] __iomem *addr
   drivers/pci/switch/switchtec.c:1075:33: sparse:     got unsigned int *
   drivers/pci/switch/switchtec.c:1081:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const [noderef] __iomem *addr @@     got unsigned int * @@
   drivers/pci/switch/switchtec.c:1081:33: sparse:     expected void const [noderef] __iomem *addr
   drivers/pci/switch/switchtec.c:1081:33: sparse:     got unsigned int *
   drivers/pci/switch/switchtec.c:1088:62: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const [noderef] __iomem *addr @@     got unsigned int * @@
   drivers/pci/switch/switchtec.c:1088:62: sparse:     expected void const [noderef] __iomem *addr
   drivers/pci/switch/switchtec.c:1088:62: sparse:     got unsigned int *
   drivers/pci/switch/switchtec.c:1100:26: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void [noderef] __user *to @@     got struct switchtec_ioctl_pff_port *up @@
   drivers/pci/switch/switchtec.c:1100:26: sparse:     expected void [noderef] __user *to
   drivers/pci/switch/switchtec.c:1100:26: sparse:     got struct switchtec_ioctl_pff_port *up
   drivers/pci/switch/switchtec.c:1112:32: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void const [noderef] __user *from @@     got struct switchtec_ioctl_pff_port *up @@
   drivers/pci/switch/switchtec.c:1112:32: sparse:     expected void const [noderef] __user *from
   drivers/pci/switch/switchtec.c:1112:32: sparse:     got struct switchtec_ioctl_pff_port *up
   drivers/pci/switch/switchtec.c:1116:22: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct part_cfg_regs *pcfg @@     got struct part_cfg_regs [noderef] __iomem *mmio_part_cfg @@
   drivers/pci/switch/switchtec.c:1116:22: sparse:     expected struct part_cfg_regs *pcfg
   drivers/pci/switch/switchtec.c:1116:22: sparse:     got struct part_cfg_regs [noderef] __iomem *mmio_part_cfg
   drivers/pci/switch/switchtec.c:1118:22: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct part_cfg_regs *pcfg @@     got struct part_cfg_regs [noderef] __iomem * @@
   drivers/pci/switch/switchtec.c:1118:22: sparse:     expected struct part_cfg_regs *pcfg
   drivers/pci/switch/switchtec.c:1118:22: sparse:     got struct part_cfg_regs [noderef] __iomem *
   drivers/pci/switch/switchtec.c:1124:35: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const [noderef] __iomem *addr @@     got unsigned int * @@
   drivers/pci/switch/switchtec.c:1124:35: sparse:     expected void const [noderef] __iomem *addr
   drivers/pci/switch/switchtec.c:1124:35: sparse:     got unsigned int *
   drivers/pci/switch/switchtec.c:1127:35: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const [noderef] __iomem *addr @@     got unsigned int * @@
   drivers/pci/switch/switchtec.c:1127:35: sparse:     expected void const [noderef] __iomem *addr
   drivers/pci/switch/switchtec.c:1127:35: sparse:     got unsigned int *
   drivers/pci/switch/switchtec.c:1134:56: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const [noderef] __iomem *addr @@     got unsigned int * @@
   drivers/pci/switch/switchtec.c:1134:56: sparse:     expected void const [noderef] __iomem *addr
   drivers/pci/switch/switchtec.c:1134:56: sparse:     got unsigned int *
   drivers/pci/switch/switchtec.c:1138:26: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void [noderef] __user *to @@     got struct switchtec_ioctl_pff_port *up @@
   drivers/pci/switch/switchtec.c:1138:26: sparse:     expected void [noderef] __user *to
   drivers/pci/switch/switchtec.c:1138:26: sparse:     got struct switchtec_ioctl_pff_port *up
   drivers/pci/switch/switchtec.c:1171:47: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected struct switchtec_ioctl_pff_port *up @@     got void [noderef] __user *argp @@
   drivers/pci/switch/switchtec.c:1171:47: sparse:     expected struct switchtec_ioctl_pff_port *up
   drivers/pci/switch/switchtec.c:1171:47: sparse:     got void [noderef] __user *argp
   drivers/pci/switch/switchtec.c:1174:47: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected struct switchtec_ioctl_pff_port *up @@     got void [noderef] __user *argp @@
   drivers/pci/switch/switchtec.c:1174:47: sparse:     expected struct switchtec_ioctl_pff_port *up
   drivers/pci/switch/switchtec.c:1174:47: sparse:     got void [noderef] __user *argp
   drivers/pci/switch/switchtec.c:1487:43: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct part_cfg_regs *pcfg @@     got struct part_cfg_regs [noderef] __iomem *mmio_part_cfg @@
   drivers/pci/switch/switchtec.c:1487:43: sparse:     expected struct part_cfg_regs *pcfg
   drivers/pci/switch/switchtec.c:1487:43: sparse:     got struct part_cfg_regs [noderef] __iomem *mmio_part_cfg
   drivers/pci/switch/switchtec.c:1497:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const [noderef] __iomem *addr @@     got unsigned int * @@
   drivers/pci/switch/switchtec.c:1497:25: sparse:     expected void const [noderef] __iomem *addr
   drivers/pci/switch/switchtec.c:1497:25: sparse:     got unsigned int *
   drivers/pci/switch/switchtec.c:1501:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const [noderef] __iomem *addr @@     got unsigned int * @@
   drivers/pci/switch/switchtec.c:1501:25: sparse:     expected void const [noderef] __iomem *addr
   drivers/pci/switch/switchtec.c:1501:25: sparse:     got unsigned int *
   drivers/pci/switch/switchtec.c:1506:54: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const [noderef] __iomem *addr @@     got unsigned int * @@
   drivers/pci/switch/switchtec.c:1506:54: sparse:     expected void const [noderef] __iomem *addr
   drivers/pci/switch/switchtec.c:1506:54: sparse:     got unsigned int *

vim +1075 drivers/pci/switch/switchtec.c

52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1058  
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1059  static int ioctl_pff_to_port(struct switchtec_dev *stdev,
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1060  			     struct switchtec_ioctl_pff_port *up)
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1061  {
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1062  	int i, part;
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1063  	u32 reg;
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1064  	struct part_cfg_regs *pcfg;
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1065  	struct switchtec_ioctl_pff_port p;
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1066  
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1067  	if (copy_from_user(&p, up, sizeof(p)))
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1068  		return -EFAULT;
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1069  
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1070  	p.port = -1;
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1071  	for (part = 0; part < stdev->partition_count; part++) {
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1072  		pcfg = &stdev->mmio_part_cfg_all[part];
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1073  		p.partition = part;
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1074  
52eabba5bcdb285 Logan Gunthorpe 2017-03-02 @1075  		reg = ioread32(&pcfg->usp_pff_inst_id);
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1076  		if (reg == p.pff) {
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1077  			p.port = 0;
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1078  			break;
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1079  		}
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1080  
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1081  		reg = ioread32(&pcfg->vep_pff_inst_id);
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1082  		if (reg == p.pff) {
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1083  			p.port = SWITCHTEC_IOCTL_PFF_VEP;
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1084  			break;
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1085  		}
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1086  
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1087  		for (i = 0; i < ARRAY_SIZE(pcfg->dsp_pff_inst_id); i++) {
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1088  			reg = ioread32(&pcfg->dsp_pff_inst_id[i]);
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1089  			if (reg != p.pff)
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1090  				continue;
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1091  
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1092  			p.port = i + 1;
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1093  			break;
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1094  		}
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1095  
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1096  		if (p.port != -1)
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1097  			break;
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1098  	}
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1099  
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1100  	if (copy_to_user(up, &p, sizeof(p)))
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1101  		return -EFAULT;
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1102  
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1103  	return 0;
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1104  }
52eabba5bcdb285 Logan Gunthorpe 2017-03-02  1105  

:::::: The code at line 1075 was first introduced by commit
:::::: 52eabba5bcdb2853dec6ef007ba427b092034738 switchtec: Add IOCTLs to the Switchtec driver

:::::: TO: Logan Gunthorpe <logang@deltatee.com>
:::::: CC: Bjorn Helgaas <bhelgaas@google.com>

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