Hi Baolin, First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: fb893de323e2d39f7a1f6df425703a2edbdf56ea commit: ffd0bbfb378ecd56eac22bf932ccdbf89ac7f725 hwspinlock: Allow drivers to be built with COMPILE_TEST date: 5 months ago config: powerpc64-randconfig-s032-20200812 (attached as .config) compiler: powerpc-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: v0.6.2-168-g9554805c-dirty git checkout ffd0bbfb378ecd56eac22bf932ccdbf89ac7f725 # 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=powerpc64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> sparse warnings: (new ones prefixed by >>) drivers/hwspinlock/u8500_hsem.c:52:39: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void [noderef] <asn:2> *lock_addr @@ got void *priv @@ drivers/hwspinlock/u8500_hsem.c:52:39: sparse: expected void [noderef] <asn:2> *lock_addr >> drivers/hwspinlock/u8500_hsem.c:52:39: sparse: got void *priv drivers/hwspinlock/u8500_hsem.c:65:39: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void [noderef] <asn:2> *lock_addr @@ got void *priv @@ drivers/hwspinlock/u8500_hsem.c:65:39: sparse: expected void [noderef] <asn:2> *lock_addr drivers/hwspinlock/u8500_hsem.c:65:39: sparse: got void *priv drivers/hwspinlock/u8500_hsem.c:116:30: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void *priv @@ got void [noderef] <asn:2> * @@ >> drivers/hwspinlock/u8500_hsem.c:116:30: sparse: expected void *priv drivers/hwspinlock/u8500_hsem.c:116:30: sparse: got void [noderef] <asn:2> * drivers/hwspinlock/u8500_hsem.c:126:52: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void [noderef] <asn:2> *io_base @@ got void * @@ drivers/hwspinlock/u8500_hsem.c:126:52: sparse: expected void [noderef] <asn:2> *io_base >> drivers/hwspinlock/u8500_hsem.c:126:52: sparse: got void * vim +52 drivers/hwspinlock/u8500_hsem.c f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 49 f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 50 static int u8500_hsem_trylock(struct hwspinlock *lock) f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 51 { f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 @52 void __iomem *lock_addr = lock->priv; f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 53 f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 54 writel(HSEM_MASTER_ID, lock_addr); f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 55 f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 56 /* get only first 4 bit and compare to masterID. f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 57 * if equal, we have the semaphore, otherwise f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 58 * someone else has it. f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 59 */ f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 60 return (HSEM_MASTER_ID == (0x0F & readl(lock_addr))); f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 61 } f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 62 f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 63 static void u8500_hsem_unlock(struct hwspinlock *lock) f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 64 { f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 65 void __iomem *lock_addr = lock->priv; f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 66 f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 67 /* release the lock by writing 0 to it */ f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 68 writel(RESET_SEMAPHORE, lock_addr); f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 69 } f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 70 f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 71 /* f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 72 * u8500: what value is recommended here ? f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 73 */ f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 74 static void u8500_hsem_relax(struct hwspinlock *lock) f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 75 { f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 76 ndelay(50); f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 77 } f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 78 f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 79 static const struct hwspinlock_ops u8500_hwspinlock_ops = { f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 80 .trylock = u8500_hsem_trylock, f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 81 .unlock = u8500_hsem_unlock, f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 82 .relax = u8500_hsem_relax, f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 83 }; f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 84 571291066d053c Bill Pemberton 2012-11-19 85 static int u8500_hsem_probe(struct platform_device *pdev) f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 86 { f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 87 struct hwspinlock_pdata *pdata = pdev->dev.platform_data; f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 88 struct hwspinlock_device *bank; f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 89 struct hwspinlock *hwlock; f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 90 void __iomem *io_base; 9d399f0c52951c Baolin Wang 2019-10-14 91 int i, num_locks = U8500_MAX_SEMAPHORE; f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 92 ulong val; f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 93 f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 94 if (!pdata) f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 95 return -ENODEV; f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 96 5ee45e0c894636 Baolin Wang 2019-09-27 97 io_base = devm_platform_ioremap_resource(pdev, 0); 5ee45e0c894636 Baolin Wang 2019-09-27 98 if (IS_ERR(io_base)) 5ee45e0c894636 Baolin Wang 2019-09-27 99 return PTR_ERR(io_base); f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 100 f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 101 /* make sure protocol 1 is selected */ f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 102 val = readl(io_base + HSEM_CTRL_REG); f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 103 writel((val & ~HSEM_PROTOCOL_1), io_base + HSEM_CTRL_REG); f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 104 f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 105 /* clear all interrupts */ f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 106 writel(0xFFFF, io_base + HSEM_ICRALL); f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 107 637bcd19beeb9e Baolin Wang 2019-09-27 108 bank = devm_kzalloc(&pdev->dev, struct_size(bank, lock, num_locks), 637bcd19beeb9e Baolin Wang 2019-09-27 109 GFP_KERNEL); 5ee45e0c894636 Baolin Wang 2019-09-27 110 if (!bank) 5ee45e0c894636 Baolin Wang 2019-09-27 111 return -ENOMEM; f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 112 f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 113 platform_set_drvdata(pdev, bank); f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 114 f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 115 for (i = 0, hwlock = &bank->lock[0]; i < num_locks; i++, hwlock++) f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 @116 hwlock->priv = io_base + HSEM_REGISTER_OFFSET + sizeof(u32) * i; f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 117 9d399f0c52951c Baolin Wang 2019-10-14 118 return devm_hwspin_lock_register(&pdev->dev, bank, 9d399f0c52951c Baolin Wang 2019-10-14 119 &u8500_hwspinlock_ops, f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 120 pdata->base_id, num_locks); 637bcd19beeb9e Baolin Wang 2019-09-27 121 } 637bcd19beeb9e Baolin Wang 2019-09-27 122 e533a349c0258f Bill Pemberton 2012-11-19 123 static int u8500_hsem_remove(struct platform_device *pdev) f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 124 { f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 125 struct hwspinlock_device *bank = platform_get_drvdata(pdev); f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 @126 void __iomem *io_base = bank->lock[0].priv - HSEM_REGISTER_OFFSET; f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 127 f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 128 /* clear all interrupts */ f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 129 writel(0xFFFF, io_base + HSEM_ICRALL); f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 130 f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 131 return 0; f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 132 } f84a8ecfca9229 Mathieu J. Poirier 2011-09-08 133 :::::: The code at line 52 was first introduced by commit :::::: f84a8ecfca9229e9227c6ec84123b114ee634959 hwspinlock/u8500: add hwspinlock driver :::::: TO: Mathieu J. Poirier <mathieu.poir...@linaro.org> :::::: CC: Ohad Ben-Cohen <o...@wizery.com> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
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