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Message-ID: <202601171708.EMbFwrWA-lkp@intel.com>
Date: Sat, 17 Jan 2026 17:35:29 +0800
From: kernel test robot <lkp@...el.com>
To: Michael Ellerman <mpe@...erman.id.au>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
Madhavan Srinivasan <maddy@...ux.ibm.com>
Subject: arch/powerpc/kernel/prom_init.c:2888:22: sparse: sparse:
incorrect type in initializer (different base types)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: d3eeb99bbc99cc5eb94a4a75ed4415a0272254ef
commit: 200f22fa48a8c670a1ba66d18d810c51055e6ae9 powerpc/prom_init: Use IS_ENABLED()
date: 1 year ago
config: powerpc-randconfig-r123-20260117 (https://download.01.org/0day-ci/archive/20260117/202601171708.EMbFwrWA-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 9b8addffa70cee5b2acc5454712d9cf78ce45710)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260117/202601171708.EMbFwrWA-lkp@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 <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601171708.EMbFwrWA-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
arch/powerpc/kernel/prom_init.c:2265:23: sparse: sparse: cast to restricted __be32
>> arch/powerpc/kernel/prom_init.c:2888:22: sparse: sparse: incorrect type in initializer (different base types) @@ expected restricted __be32 [usertype] val @@ got int @@
arch/powerpc/kernel/prom_init.c:2888:22: sparse: expected restricted __be32 [usertype] val
arch/powerpc/kernel/prom_init.c:2888:22: sparse: got int
vim +2888 arch/powerpc/kernel/prom_init.c
cf89c9434af122 Michael Ellerman 2024-11-26 2885
cf89c9434af122 Michael Ellerman 2024-11-26 2886 static void __init fixup_device_tree_pmac(void)
cf89c9434af122 Michael Ellerman 2024-11-26 2887 {
cf89c9434af122 Michael Ellerman 2024-11-26 @2888 __be32 val = 1;
cf89c9434af122 Michael Ellerman 2024-11-26 2889 char type[8];
cf89c9434af122 Michael Ellerman 2024-11-26 2890 phandle node;
cf89c9434af122 Michael Ellerman 2024-11-26 2891
cf89c9434af122 Michael Ellerman 2024-11-26 2892 // Some pmacs are missing #size-cells on escc nodes
cf89c9434af122 Michael Ellerman 2024-11-26 2893 for (node = 0; prom_next_node(&node); ) {
cf89c9434af122 Michael Ellerman 2024-11-26 2894 type[0] = '\0';
cf89c9434af122 Michael Ellerman 2024-11-26 2895 prom_getprop(node, "device_type", type, sizeof(type));
cf89c9434af122 Michael Ellerman 2024-11-26 2896 if (prom_strcmp(type, "escc"))
cf89c9434af122 Michael Ellerman 2024-11-26 2897 continue;
cf89c9434af122 Michael Ellerman 2024-11-26 2898
cf89c9434af122 Michael Ellerman 2024-11-26 2899 if (prom_getproplen(node, "#size-cells") != PROM_ERROR)
cf89c9434af122 Michael Ellerman 2024-11-26 2900 continue;
cf89c9434af122 Michael Ellerman 2024-11-26 2901
cf89c9434af122 Michael Ellerman 2024-11-26 2902 prom_setprop(node, NULL, "#size-cells", &val, sizeof(val));
cf89c9434af122 Michael Ellerman 2024-11-26 2903 }
cf89c9434af122 Michael Ellerman 2024-11-26 2904 }
9b6b563c0d2d25 Paul Mackerras 2005-10-06 2905
:::::: The code at line 2888 was first introduced by commit
:::::: cf89c9434af122f28a3552e6f9cc5158c33ce50a powerpc/prom_init: Fixup missing powermac #size-cells
:::::: TO: Michael Ellerman <mpe@...erman.id.au>
:::::: CC: Madhavan Srinivasan <maddy@...ux.ibm.com>
--
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https://github.com/intel/lkp-tests/wiki
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