Le 04/03/2022 à 01:21, Rohan McLure a écrit :
> Inspired by (bd75b4ef4977: Constify static attribute_group structs),
> accepted by linux-next, reported:
> https://patchwork.ozlabs.org/project/linuxppc-dev/patch/20220210202805.7750-4-rikard.falkeb...@gmail.com/
> 
> Nearly all singletons of type struct attribute_group are never
> modified, and so
> are candidates for being const. Declare them as const.
> 
> Signed-off-by: Rohan McLure <rmcl...@linux.ibm.com>
> ---
>   arch/powerpc/perf/generic-compat-pmu.c      | 4 ++--
>   arch/powerpc/perf/hv-24x7.c                 | 6 +++---
>   arch/powerpc/perf/hv-gpci.c                 | 8 ++++----
>   arch/powerpc/perf/imc-pmu.c                 | 6 +++---
>   arch/powerpc/perf/isa207-common.c           | 2 +-
>   arch/powerpc/perf/power10-pmu.c             | 6 +++---
>   arch/powerpc/perf/power7-pmu.c              | 4 ++--
>   arch/powerpc/perf/power8-pmu.c              | 4 ++--
>   arch/powerpc/perf/power9-pmu.c              | 6 +++---
>   arch/powerpc/platforms/cell/cbe_thermal.c   | 4 ++--
>   arch/powerpc/platforms/powernv/opal-core.c  | 2 +-
>   arch/powerpc/platforms/powernv/opal-dump.c  | 2 +-
>   arch/powerpc/platforms/powernv/opal-flash.c | 2 +-
>   arch/powerpc/platforms/pseries/papr_scm.c   | 2 +-
>   arch/powerpc/platforms/pseries/power.c      | 2 +-
>   15 files changed, 30 insertions(+), 30 deletions(-)
> 

/linux/arch/powerpc/platforms/cell/cbe_thermal.c: In function 
'thermal_init':
/linux/arch/powerpc/platforms/cell/cbe_thermal.c:370:26: error: passing 
argument 1 of 'spu_add_dev_attr_group' discards 'const' qualifier from 
pointer target type [-Werror=discarded-qualifiers]
    spu_add_dev_attr_group(&spu_attribute_group);
                           ^
In file included from /linux/arch/powerpc/platforms/cell/cbe_thermal.c:40:0:
/linux/arch/powerpc/include/asm/spu.h:252:5: note: expected 'struct 
attribute_group *' but argument is of type 'const struct attribute_group *'
  int spu_add_dev_attr_group(struct attribute_group *attrs);
      ^
/linux/arch/powerpc/platforms/cell/cbe_thermal.c:371:26: error: passing 
argument 1 of 'cpu_add_dev_attr_group' discards 'const' qualifier from 
pointer target type [-Werror=discarded-qualifiers]
    cpu_add_dev_attr_group(&ppe_attribute_group);
                           ^
In file included from /linux/arch/powerpc/platforms/cell/cbe_thermal.c:38:0:
/linux/include/linux/cpu.h:47:12: note: expected 'struct attribute_group 
*' but argument is of type 'const struct attribute_group *'
  extern int cpu_add_dev_attr_group(struct attribute_group *attrs);
             ^
/linux/arch/powerpc/platforms/cell/cbe_thermal.c: In function 
'thermal_exit':
/linux/arch/powerpc/platforms/cell/cbe_thermal.c:380:28: error: passing 
argument 1 of 'spu_remove_dev_attr_group' discards 'const' qualifier 
from pointer target type [-Werror=discarded-qualifiers]
   spu_remove_dev_attr_group(&spu_attribute_group);
                             ^
In file included from /linux/arch/powerpc/platforms/cell/cbe_thermal.c:40:0:
/linux/arch/powerpc/include/asm/spu.h:253:6: note: expected 'struct 
attribute_group *' but argument is of type 'const struct attribute_group *'
  void spu_remove_dev_attr_group(struct attribute_group *attrs);
       ^
/linux/arch/powerpc/platforms/cell/cbe_thermal.c:381:28: error: passing 
argument 1 of 'cpu_remove_dev_attr_group' discards 'const' qualifier 
from pointer target type [-Werror=discarded-qualifiers]
   cpu_remove_dev_attr_group(&ppe_attribute_group);
                             ^
In file included from /linux/arch/powerpc/platforms/cell/cbe_thermal.c:38:0:
/linux/include/linux/cpu.h:48:13: note: expected 'struct attribute_group 
*' but argument is of type 'const struct attribute_group *'
  extern void cpu_remove_dev_attr_group(struct attribute_group *attrs);
              ^
cc1: all warnings being treated as errors
make[4]: *** [arch/powerpc/platforms/cell/cbe_thermal.o] Error 1
/linux/scripts/Makefile.build:288: recipe for target 
'arch/powerpc/platforms/cell/cbe_thermal.o' failed

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