drivers/misc/ocxl/mmio.c:20:34: sparse: sparse: cast removes address space '__iomem' of expression

From: kernel test robot
Date: Mon Dec 18 2023 - 13:46:35 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: ceb6a6f023fd3e8b07761ed900352ef574010bcb
commit: 7e462c2a8a6d00d3c240cac9f5626eff96d8e641 ocxl: Provide global MMIO accessors for external drivers
date: 4 years, 8 months ago
config: powerpc64-randconfig-r113-20231118 (https://download.01.org/0day-ci/archive/20231219/202312190208.xrAsnOMZ-lkp@xxxxxxxxx/config)
compiler: powerpc64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231219/202312190208.xrAsnOMZ-lkp@xxxxxxxxx/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 <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312190208.xrAsnOMZ-lkp@xxxxxxxxx/

sparse warnings: (new ones prefixed by >>)
>> drivers/misc/ocxl/mmio.c:20:34: sparse: sparse: cast removes address space '__iomem' of expression
>> drivers/misc/ocxl/mmio.c:20:62: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:20:62: sparse: expected void const volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:20:62: sparse: got char *
drivers/misc/ocxl/mmio.c:24:31: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:24:59: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:24:59: sparse: expected void const volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:24:59: sparse: got char *
drivers/misc/ocxl/mmio.c:45:34: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:45:62: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:45:62: sparse: expected void const volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:45:62: sparse: got char *
drivers/misc/ocxl/mmio.c:49:31: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:49:59: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:49:59: sparse: expected void const volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:49:59: sparse: got char *
drivers/misc/ocxl/mmio.c:70:33: sparse: sparse: cast removes address space '__iomem' of expression
>> drivers/misc/ocxl/mmio.c:70:61: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:70:61: sparse: expected void volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:70:61: sparse: got char *
drivers/misc/ocxl/mmio.c:74:30: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:74:58: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:74:58: sparse: expected void volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:74:58: sparse: got char *
drivers/misc/ocxl/mmio.c:96:33: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:96:61: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:96:61: sparse: expected void volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:96:61: sparse: got char *
drivers/misc/ocxl/mmio.c:100:30: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:100:58: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:100:58: sparse: expected void volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:100:58: sparse: got char *
drivers/misc/ocxl/mmio.c:124:33: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:124:61: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:124:61: sparse: expected void const volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:124:61: sparse: got char *
drivers/misc/ocxl/mmio.c:126:33: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:126:61: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:126:61: sparse: expected void volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:126:61: sparse: got char *
drivers/misc/ocxl/mmio.c:130:30: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:130:58: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:130:58: sparse: expected void const volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:130:58: sparse: got char *
drivers/misc/ocxl/mmio.c:132:30: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:132:58: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:132:58: sparse: expected void volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:132:58: sparse: got char *
drivers/misc/ocxl/mmio.c:155:33: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:155:61: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:155:61: sparse: expected void const volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:155:61: sparse: got char *
drivers/misc/ocxl/mmio.c:157:33: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:157:61: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:157:61: sparse: expected void volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:157:61: sparse: got char *
drivers/misc/ocxl/mmio.c:161:30: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:161:58: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:161:58: sparse: expected void const volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:161:58: sparse: got char *
drivers/misc/ocxl/mmio.c:163:30: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:163:58: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:163:58: sparse: expected void volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:163:58: sparse: got char *
drivers/misc/ocxl/mmio.c:186:33: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:186:61: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:186:61: sparse: expected void const volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:186:61: sparse: got char *
drivers/misc/ocxl/mmio.c:188:33: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:188:61: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:188:61: sparse: expected void volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:188:61: sparse: got char *
drivers/misc/ocxl/mmio.c:192:30: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:192:58: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:192:58: sparse: expected void const volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:192:58: sparse: got char *
drivers/misc/ocxl/mmio.c:194:30: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:194:58: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:194:58: sparse: expected void volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:194:58: sparse: got char *
drivers/misc/ocxl/mmio.c:218:33: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:218:61: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:218:61: sparse: expected void const volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:218:61: sparse: got char *
drivers/misc/ocxl/mmio.c:220:33: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:220:61: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:220:61: sparse: expected void volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:220:61: sparse: got char *
drivers/misc/ocxl/mmio.c:224:30: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:224:58: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:224:58: sparse: expected void const volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:224:58: sparse: got char *
drivers/misc/ocxl/mmio.c:226:30: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:226:58: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:226:58: sparse: expected void volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:226:58: sparse: got char *
drivers/misc/ocxl/mmio.c:230:22: sparse: sparse: cast removes address space '__iomem' of expression
drivers/misc/ocxl/mmio.c:230:50: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got char * @@
drivers/misc/ocxl/mmio.c:230:50: sparse: expected void volatile [noderef] __iomem *addr
drivers/misc/ocxl/mmio.c:230:50: sparse: got char *
drivers/misc/ocxl/mmio.c: note: in included file (through include/linux/io.h, include/linux/irq.h, arch/powerpc/include/asm/hardirq.h, ...):
arch/powerpc/include/asm/io.h:157:1: sparse: sparse: dereference of noderef expression
arch/powerpc/include/asm/io.h:162:1: sparse: sparse: dereference of noderef expression
arch/powerpc/include/asm/io.h:157:1: sparse: sparse: dereference of noderef expression
arch/powerpc/include/asm/io.h:162:1: sparse: sparse: dereference of noderef expression
arch/powerpc/include/asm/io.h:157:1: sparse: sparse: dereference of noderef expression
arch/powerpc/include/asm/io.h:162:1: sparse: sparse: dereference of noderef expression

vim +/__iomem +20 drivers/misc/ocxl/mmio.c

17
18 switch (endian) {
19 case OCXL_BIG_ENDIAN:
> 20 *val = readl_be((char *)afu->global_mmio_ptr + offset);
21 break;
22
23 default:
24 *val = readl((char *)afu->global_mmio_ptr + offset);
25 break;
26 }
27
28 return 0;
29 }
30 EXPORT_SYMBOL_GPL(ocxl_global_mmio_read32);
31
32 int ocxl_global_mmio_read64(struct ocxl_afu *afu, size_t offset,
33 enum ocxl_endian endian, u64 *val)
34 {
35 if (offset > afu->config.global_mmio_size - 8)
36 return -EINVAL;
37
38 #ifdef __BIG_ENDIAN__
39 if (endian == OCXL_HOST_ENDIAN)
40 endian = OCXL_BIG_ENDIAN;
41 #endif
42
43 switch (endian) {
44 case OCXL_BIG_ENDIAN:
45 *val = readq_be((char *)afu->global_mmio_ptr + offset);
46 break;
47
48 default:
49 *val = readq((char *)afu->global_mmio_ptr + offset);
50 break;
51 }
52
53 return 0;
54 }
55 EXPORT_SYMBOL_GPL(ocxl_global_mmio_read64);
56
57 int ocxl_global_mmio_write32(struct ocxl_afu *afu, size_t offset,
58 enum ocxl_endian endian, u32 val)
59 {
60 if (offset > afu->config.global_mmio_size - 4)
61 return -EINVAL;
62
63 #ifdef __BIG_ENDIAN__
64 if (endian == OCXL_HOST_ENDIAN)
65 endian = OCXL_BIG_ENDIAN;
66 #endif
67
68 switch (endian) {
69 case OCXL_BIG_ENDIAN:
> 70 writel_be(val, (char *)afu->global_mmio_ptr + offset);
71 break;
72
73 default:
74 writel(val, (char *)afu->global_mmio_ptr + offset);
75 break;
76 }
77
78
79 return 0;
80 }
81 EXPORT_SYMBOL_GPL(ocxl_global_mmio_write32);
82

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

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