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Re: [Xen-devel] [PATCH v3 20/52] xen/arch/x86/shutdown.c: let custom parameter parsing routines return errno



>>> On 16.08.17 at 14:51, <jgross@xxxxxxxx> wrote:
> --- a/xen/arch/x86/shutdown.c
> +++ b/xen/arch/x86/shutdown.c
> @@ -51,8 +51,11 @@ static int reboot_mode;
>   * efi    Use the EFI reboot (if running under EFI)
>   */
>  static enum reboot_type reboot_type = BOOT_INVALID;
> -static void __init set_reboot_type(char *str)
> +
> +static int __init set_reboot_type(const char *str)
>  {
> +    int rc = 0;
> +
>      for ( ; ; )
>      {
>          switch ( *str )
> @@ -74,6 +77,8 @@ static void __init set_reboot_type(char *str)
>          case 't':
>              reboot_type = *str;
>              break;
> +        default:
> +            rc = -EINVAL;
>          }

Please don't omit the break statement, even if it is not strictly needed
here.

> @@ -82,6 +87,8 @@ static void __init set_reboot_type(char *str)
>  
>      if ( reboot_type == BOOT_EFI && !efi_enabled(EFI_RS) )
>          reboot_type = BOOT_INVALID;

Should this perhaps also lead to -EINVAL being returned?

Jan


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