Quoting Aristeu Rozanski ([email protected]):
> This patch converts the code to use kstrtou32() instead of simple_strtoul()
> which is deprecated. The real size of the variables are u32, so use kstrtou32
> instead of kstrtoul
> 
> 
> Cc: Dave Jones <[email protected]>
> Cc: Andrew Morton <[email protected]>
> Cc: Tejun Heo <[email protected]>
> Cc: Li Zefan <[email protected]>
> Cc: James Morris <[email protected]>
> Cc: Pavel Emelyanov <[email protected]>
> Cc: Serge Hallyn <[email protected]>

Acked-by: Serge E. Hallyn <[email protected]>

> Cc: Jiri Slaby <[email protected]>
> Signed-off-by: Aristeu Rozanski <[email protected]>
> 
> ---
>  security/device_cgroup.c |   28 ++++++++++++++++++++++------
>  1 file changed, 22 insertions(+), 6 deletions(-)
> 
> --- github.orig/security/device_cgroup.c      2012-10-19 16:35:46.366102913 
> -0400
> +++ github/security/device_cgroup.c   2012-10-19 16:35:50.801229331 -0400
> @@ -361,8 +361,8 @@ static int devcgroup_update_access(struc
>                                  int filetype, const char *buffer)
>  {
>       const char *b;
> -     char *endp;
> -     int count;
> +     char temp[12];          /* 11 + 1 characters needed for a u32 */
> +     int count, rc;
>       struct dev_exception_item ex;
>  
>       if (!capable(CAP_SYS_ADMIN))
> @@ -405,8 +405,16 @@          return 0;
>               ex.major = ~0;
>               b++;
>       } else if (isdigit(*b)) {
> -             ex.major = simple_strtoul(b, &endp, 10);
> -             b = endp;
> +             memset(temp, 0, sizeof(temp));
> +             for (count = 0; count < sizeof(temp) - 1; count++) {
> +                     temp[count] = *b;
> +                     b++;
> +                     if (!isdigit(*b))
> +                             break;
> +             }
> +             rc = kstrtou32(temp, 10, &ex.major);
> +             if (rc)
> +                     return -EINVAL;
>       } else {
>               return -EINVAL;
>       }
> @@ -419,8 +427,16 @@          ex.major = simple_strtoul(b, &endp, 10
>               ex.minor = ~0;
>               b++;
>       } else if (isdigit(*b)) {
> -             ex.minor = simple_strtoul(b, &endp, 10);
> -             b = endp;
> +             memset(temp, 0, sizeof(temp));
> +             for (count = 0; count < sizeof(temp) - 1; count++) {
> +                     temp[count] = *b;
> +                     b++;
> +                     if (!isdigit(*b))
> +                             break;
> +             }
> +             rc = kstrtou32(temp, 10, &ex.minor);
> +             if (rc)
> +                     return -EINVAL;
>       } else {
>               return -EINVAL;
>       }
> 
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