Re: [PATCH] genirq: Keep affinity_hint unchanged if it has a value

[kernel test robot <lkp@intel.com>]

Hi Yajun,

kernel test robot noticed the following build errors:

[auto build test ERROR on tip/irq/core]
[also build test ERROR on linus/master v6.14-rc6 next-20250311]
[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/Yajun-Deng/genirq-Keep-affinity_hint-unchanged-if-it-has-a-value/20250311-093633
base:   tip/irq/core
patch link:    https://lore.kernel.org/r/20250311013352.2727490-1-yajun.deng%40linux.dev
patch subject: [PATCH] genirq: Keep affinity_hint unchanged if it has a value
config: s390-randconfig-002-20250312 (https://download.01.org/0day-ci/archive/20250312/202503120334.Dk9gw6LX-lkp@intel.com/config)
compiler: clang version 16.0.6 (https://github.com/llvm/llvm-project 7cbf1a2591520c2491aa35339f227775f4d3adf6)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250312/202503120334.Dk9gw6LX-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202503120334.Dk9gw6LX-lkp@intel.com/

All errors (new ones prefixed by >>):

>> kernel/irq/irqdesc.c:61:31: error: incompatible pointer types passing 'struct cpumask **' to parameter of type 'cpumask_var_t *' (aka 'struct cpumask (*)[1]') [-Werror,-Wincompatible-pointer-types]
           if (!zalloc_cpumask_var_node(&desc->affinity_hint,
                                        ^~~~~~~~~~~~~~~~~~~~
   include/linux/cpumask.h:996:68: note: passing argument to parameter 'mask' here
   static __always_inline bool zalloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags,
                                                                      ^
   1 error generated.


vim +61 kernel/irq/irqdesc.c

    53	
    54	#ifdef CONFIG_SMP
    55	static int alloc_masks(struct irq_desc *desc, int node)
    56	{
    57		if (!zalloc_cpumask_var_node(&desc->irq_common_data.affinity,
    58					     GFP_KERNEL, node))
    59			return -ENOMEM;
    60	
  > 61		if (!zalloc_cpumask_var_node(&desc->affinity_hint,
    62					     GFP_KERNEL, node)) {
    63			free_cpumask_var(desc->irq_common_data.affinity);
    64			return -ENOMEM;
    65		}
    66	

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