arch/arm/mach-socfpga/pm.c:75:25: sparse: sparse: incorrect type in argument 1 (different address spaces)

From: kernel test robot
Date: Sat Jul 24 2021 - 18:05:43 EST

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f0fddcec6b6254b4b3611388786bbafb703ad257
commit: 4483397b03536506535d611b0cb28a81a69e8edf ARM: socfpga: drop ARCH_SOCFPGA
date: 4 months ago
config: arm-allyesconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 10.3.0
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: v0.6.3-341-g8af24329-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4483397b03536506535d611b0cb28a81a69e8edf
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 4483397b03536506535d611b0cb28a81a69e8edf
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>


sparse warnings: (new ones prefixed by >>)
>> arch/arm/mach-socfpga/pm.c:75:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *p @@ got void [noderef] __iomem *[assigned] suspend_ocram_base @@
arch/arm/mach-socfpga/pm.c:75:25: sparse: expected void *p
arch/arm/mach-socfpga/pm.c:75:25: sparse: got void [noderef] __iomem *[assigned] suspend_ocram_base

vim +75 arch/arm/mach-socfpga/pm.c

44fd8c7d4005f6 Alan Tull 2015-06-05 24
44fd8c7d4005f6 Alan Tull 2015-06-05 25 static int socfpga_setup_ocram_self_refresh(void)
44fd8c7d4005f6 Alan Tull 2015-06-05 26 {
44fd8c7d4005f6 Alan Tull 2015-06-05 27 struct platform_device *pdev;
44fd8c7d4005f6 Alan Tull 2015-06-05 28 phys_addr_t ocram_pbase;
44fd8c7d4005f6 Alan Tull 2015-06-05 29 struct device_node *np;
44fd8c7d4005f6 Alan Tull 2015-06-05 30 struct gen_pool *ocram_pool;
44fd8c7d4005f6 Alan Tull 2015-06-05 31 unsigned long ocram_base;
44fd8c7d4005f6 Alan Tull 2015-06-05 32 void __iomem *suspend_ocram_base;
44fd8c7d4005f6 Alan Tull 2015-06-05 33 int ret = 0;
44fd8c7d4005f6 Alan Tull 2015-06-05 34
44fd8c7d4005f6 Alan Tull 2015-06-05 35 np = of_find_compatible_node(NULL, NULL, "mmio-sram");
44fd8c7d4005f6 Alan Tull 2015-06-05 36 if (!np) {
44fd8c7d4005f6 Alan Tull 2015-06-05 37 pr_err("%s: Unable to find mmio-sram in dtb\n", __func__);
44fd8c7d4005f6 Alan Tull 2015-06-05 38 return -ENODEV;
44fd8c7d4005f6 Alan Tull 2015-06-05 39 }
44fd8c7d4005f6 Alan Tull 2015-06-05 40
44fd8c7d4005f6 Alan Tull 2015-06-05 41 pdev = of_find_device_by_node(np);
44fd8c7d4005f6 Alan Tull 2015-06-05 42 if (!pdev) {
44fd8c7d4005f6 Alan Tull 2015-06-05 43 pr_warn("%s: failed to find ocram device!\n", __func__);
44fd8c7d4005f6 Alan Tull 2015-06-05 44 ret = -ENODEV;
44fd8c7d4005f6 Alan Tull 2015-06-05 45 goto put_node;
44fd8c7d4005f6 Alan Tull 2015-06-05 46 }
44fd8c7d4005f6 Alan Tull 2015-06-05 47
73858173593c31 Vladimir Zapolskiy 2015-09-04 48 ocram_pool = gen_pool_get(&pdev->dev, NULL);
44fd8c7d4005f6 Alan Tull 2015-06-05 49 if (!ocram_pool) {
44fd8c7d4005f6 Alan Tull 2015-06-05 50 pr_warn("%s: ocram pool unavailable!\n", __func__);
44fd8c7d4005f6 Alan Tull 2015-06-05 51 ret = -ENODEV;
3ad7b4e8f89d6b Yu Kuai 2020-07-21 52 goto put_device;
44fd8c7d4005f6 Alan Tull 2015-06-05 53 }
44fd8c7d4005f6 Alan Tull 2015-06-05 54
44fd8c7d4005f6 Alan Tull 2015-06-05 55 ocram_base = gen_pool_alloc(ocram_pool, socfpga_sdram_self_refresh_sz);
44fd8c7d4005f6 Alan Tull 2015-06-05 56 if (!ocram_base) {
44fd8c7d4005f6 Alan Tull 2015-06-05 57 pr_warn("%s: unable to alloc ocram!\n", __func__);
44fd8c7d4005f6 Alan Tull 2015-06-05 58 ret = -ENOMEM;
3ad7b4e8f89d6b Yu Kuai 2020-07-21 59 goto put_device;
44fd8c7d4005f6 Alan Tull 2015-06-05 60 }
44fd8c7d4005f6 Alan Tull 2015-06-05 61
44fd8c7d4005f6 Alan Tull 2015-06-05 62 ocram_pbase = gen_pool_virt_to_phys(ocram_pool, ocram_base);
44fd8c7d4005f6 Alan Tull 2015-06-05 63
44fd8c7d4005f6 Alan Tull 2015-06-05 64 suspend_ocram_base = __arm_ioremap_exec(ocram_pbase,
44fd8c7d4005f6 Alan Tull 2015-06-05 65 socfpga_sdram_self_refresh_sz,
44fd8c7d4005f6 Alan Tull 2015-06-05 66 false);
44fd8c7d4005f6 Alan Tull 2015-06-05 67 if (!suspend_ocram_base) {
44fd8c7d4005f6 Alan Tull 2015-06-05 68 pr_warn("%s: __arm_ioremap_exec failed!\n", __func__);
44fd8c7d4005f6 Alan Tull 2015-06-05 69 ret = -ENOMEM;
3ad7b4e8f89d6b Yu Kuai 2020-07-21 70 goto put_device;
44fd8c7d4005f6 Alan Tull 2015-06-05 71 }
44fd8c7d4005f6 Alan Tull 2015-06-05 72
44fd8c7d4005f6 Alan Tull 2015-06-05 73 /* Copy the code that puts DDR in self refresh to ocram */
44fd8c7d4005f6 Alan Tull 2015-06-05 74 socfpga_sdram_self_refresh_in_ocram =
44fd8c7d4005f6 Alan Tull 2015-06-05 @75 (void *)fncpy(suspend_ocram_base,
44fd8c7d4005f6 Alan Tull 2015-06-05 76 &socfpga_sdram_self_refresh,
44fd8c7d4005f6 Alan Tull 2015-06-05 77 socfpga_sdram_self_refresh_sz);
44fd8c7d4005f6 Alan Tull 2015-06-05 78
44fd8c7d4005f6 Alan Tull 2015-06-05 79 WARN(!socfpga_sdram_self_refresh_in_ocram,
44fd8c7d4005f6 Alan Tull 2015-06-05 80 "could not copy function to ocram");
44fd8c7d4005f6 Alan Tull 2015-06-05 81 if (!socfpga_sdram_self_refresh_in_ocram)
44fd8c7d4005f6 Alan Tull 2015-06-05 82 ret = -EFAULT;
44fd8c7d4005f6 Alan Tull 2015-06-05 83
3ad7b4e8f89d6b Yu Kuai 2020-07-21 84 put_device:
3ad7b4e8f89d6b Yu Kuai 2020-07-21 85 put_device(&pdev->dev);
44fd8c7d4005f6 Alan Tull 2015-06-05 86 put_node:
44fd8c7d4005f6 Alan Tull 2015-06-05 87 of_node_put(np);
44fd8c7d4005f6 Alan Tull 2015-06-05 88
44fd8c7d4005f6 Alan Tull 2015-06-05 89 return ret;
44fd8c7d4005f6 Alan Tull 2015-06-05 90 }
44fd8c7d4005f6 Alan Tull 2015-06-05 91

:::::: The code at line 75 was first introduced by commit
:::::: 44fd8c7d4005f660f48679439f0a54225ba234a4 ARM: socfpga: support suspend to ram

:::::: TO: Alan Tull <atull@xxxxxxxxxxxxxxxxxxxxx>
:::::: CC: Kevin Hilman <khilman@xxxxxxxxxx>

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

Attachment: .config.gz
Description: application/gzip