On Mon, May 10, 2021 at 05:49:25PM +0300, Andy Shevchenko wrote:
> If by some reason any of the headers will include ctype.h
> we will have a name collision. Avoid this by moving isspace()
> to the dedicate namespace.
> 
> First appearance of the code is in the commit cf68787b68a2
> ("powerpc/prom_init: Evaluate mem kernel parameter for early allocation").

Any comments on this?

> Reported-by: kernel test robot <l...@intel.com>
> Signed-off-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
> ---
>  arch/powerpc/kernel/prom_init.c | 18 +++++++++---------
>  1 file changed, 9 insertions(+), 9 deletions(-)
> 
> diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
> index 41ed7e33d897..6845cbbc0cd4 100644
> --- a/arch/powerpc/kernel/prom_init.c
> +++ b/arch/powerpc/kernel/prom_init.c
> @@ -701,13 +701,13 @@ static int __init prom_setprop(phandle node, const char 
> *nodename,
>  }
>  
>  /* We can't use the standard versions because of relocation headaches. */
> -#define isxdigit(c)  (('0' <= (c) && (c) <= '9') \
> -                      || ('a' <= (c) && (c) <= 'f') \
> -                      || ('A' <= (c) && (c) <= 'F'))
> +#define prom_isxdigit(c)     (('0' <= (c) && (c) <= '9') \
> +                              || ('a' <= (c) && (c) <= 'f') \
> +                              || ('A' <= (c) && (c) <= 'F'))
>  
> -#define isdigit(c)   ('0' <= (c) && (c) <= '9')
> -#define islower(c)   ('a' <= (c) && (c) <= 'z')
> -#define toupper(c)   (islower(c) ? ((c) - 'a' + 'A') : (c))
> +#define prom_isdigit(c)              ('0' <= (c) && (c) <= '9')
> +#define prom_islower(c)              ('a' <= (c) && (c) <= 'z')
> +#define prom_toupper(c)              (prom_islower(c) ? ((c) - 'a' + 'A') : 
> (c))
>  
>  static unsigned long prom_strtoul(const char *cp, const char **endp)
>  {
> @@ -716,14 +716,14 @@ static unsigned long prom_strtoul(const char *cp, const 
> char **endp)
>       if (*cp == '0') {
>               base = 8;
>               cp++;
> -             if (toupper(*cp) == 'X') {
> +             if (prom_toupper(*cp) == 'X') {
>                       cp++;
>                       base = 16;
>               }
>       }
>  
> -     while (isxdigit(*cp) &&
> -            (value = isdigit(*cp) ? *cp - '0' : toupper(*cp) - 'A' + 10) < 
> base) {
> +     while (prom_isxdigit(*cp) &&
> +            (value = prom_isdigit(*cp) ? *cp - '0' : prom_toupper(*cp) - 'A' 
> + 10) < base) {
>               result = result * base + value;
>               cp++;
>       }
> -- 
> 2.30.2
> 

-- 
With Best Regards,
Andy Shevchenko


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