Hi Kamal, kernel test robot noticed the following build warnings:
[auto build test WARNING on robh/for-next] [also build test WARNING on linus/master v6.16-rc5 next-20250711] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Kamal-Dasu/dt-bindings-brcmstb-hwspinlock-support-for-hwspinlock/20250712-034624 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next patch link: https://lore.kernel.org/r/20250711154221.928164-4-kamal.dasu%40broadcom.com patch subject: [PATCH 2/4] hwspinlock: brcmstb hardware semaphore support config: arc-randconfig-r111-20250713 (https://download.01.org/0day-ci/archive/20250713/202507131422.6eiuyxuj-...@intel.com/config) compiler: arc-linux-gcc (GCC) 12.4.0 reproduce: (https://download.01.org/0day-ci/archive/20250713/202507131422.6eiuyxuj-...@intel.com/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 <l...@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202507131422.6eiuyxuj-...@intel.com/ sparse warnings: (new ones prefixed by >>) >> drivers/hwspinlock/brcmstb_hwspinlock.c:26:39: sparse: sparse: incorrect >> type in initializer (different address spaces) @@ expected void >> [noderef] __iomem *lock_addr @@ got void *priv @@ drivers/hwspinlock/brcmstb_hwspinlock.c:26:39: sparse: expected void [noderef] __iomem *lock_addr drivers/hwspinlock/brcmstb_hwspinlock.c:26:39: sparse: got void *priv drivers/hwspinlock/brcmstb_hwspinlock.c:35:39: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void [noderef] __iomem *lock_addr @@ got void *priv @@ drivers/hwspinlock/brcmstb_hwspinlock.c:35:39: sparse: expected void [noderef] __iomem *lock_addr drivers/hwspinlock/brcmstb_hwspinlock.c:35:39: sparse: got void *priv >> drivers/hwspinlock/brcmstb_hwspinlock.c:73:30: sparse: sparse: incorrect >> type in assignment (different address spaces) @@ expected void *priv @@ >> got void [noderef] __iomem * @@ drivers/hwspinlock/brcmstb_hwspinlock.c:73:30: sparse: expected void *priv drivers/hwspinlock/brcmstb_hwspinlock.c:73:30: sparse: got void [noderef] __iomem * vim +26 drivers/hwspinlock/brcmstb_hwspinlock.c 23 24 static int brcmstb_hwspinlock_trylock(struct hwspinlock *lock) 25 { > 26 void __iomem *lock_addr = lock->priv; 27 28 writel(HWSPINLOCK_VAL, lock_addr); 29 30 return (readl(lock_addr) == HWSPINLOCK_VAL); 31 } 32 33 static void brcmstb_hwspinlock_unlock(struct hwspinlock *lock) 34 { 35 void __iomem *lock_addr = lock->priv; 36 37 /* release the lock by writing 0 to it */ 38 writel(RESET_SEMAPHORE, lock_addr); 39 } 40 41 static void brcmstb_hwspinlock_relax(struct hwspinlock *lock) 42 { 43 ndelay(50); 44 } 45 46 static const struct hwspinlock_ops brcmstb_hwspinlock_ops = { 47 .trylock = brcmstb_hwspinlock_trylock, 48 .unlock = brcmstb_hwspinlock_unlock, 49 .relax = brcmstb_hwspinlock_relax, 50 }; 51 52 static int brcmstb_hwspinlock_probe(struct platform_device *pdev) 53 { 54 struct hwspinlock_device *bank; 55 struct hwspinlock *hwlock; 56 void __iomem *io_base; 57 int i, num_locks = BRCMSTB_MAX_SEMAPHORES; 58 59 io_base = devm_platform_ioremap_resource(pdev, 0); 60 if (IS_ERR(io_base)) { 61 dev_err(&pdev->dev, "semaphore iobase mapping error\n"); 62 return PTR_ERR(io_base); 63 } 64 65 bank = devm_kzalloc(&pdev->dev, struct_size(bank, lock, num_locks), 66 GFP_KERNEL); 67 if (!bank) 68 return -ENOMEM; 69 70 platform_set_drvdata(pdev, bank); 71 72 for (i = 0, hwlock = &bank->lock[0]; i < num_locks; i++, hwlock++) > 73 hwlock->priv = io_base + sizeof(u32) * i; 74 75 return devm_hwspin_lock_register(&pdev->dev, bank, 76 &brcmstb_hwspinlock_ops, 77 0, num_locks); 78 } 79 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
