Re: [Xen-devel] [PATCH 4/7] vgabios: Report mode not supported getting mode informations

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Fri, 2012-05-04 at 13:36 +0100, Frediano Ziglio wrote:
> If you try to get mode information for an unsupported mode
> interrupt should return error but not that the function is not
> supported.
> 
> Signed-off-by: Frediano Ziglio <frediano.ziglio@xxxxxxxxxx>
> ---
>  tools/firmware/vgabios/vbe.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/firmware/vgabios/vbe.c b/tools/firmware/vgabios/vbe.c
> index 35d9866..fff314e 100644
> --- a/tools/firmware/vgabios/vbe.c
> +++ b/tools/firmware/vgabios/vbe.c
> @@ -911,7 +911,8 @@ Bit16u *AX;Bit16u ES;Bit16u DI;
>  void vbe_biosfn_return_mode_information(AX, CX, ES, DI)
>  Bit16u *AX;Bit16u CX; Bit16u ES;Bit16u DI;
>  {
> -        Bit16u            result=0x0100;
> +        // error by default is 0x014f which means supported but error
> +        Bit16u                 result=0x014f;

Something odd has happened to the whitepace here. Otherwise:
Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>


>          Bit16u            ss=get_SS();
>          ModeInfoBlock     info;
>          ModeInfoListItem  *cur_info;
> @@ -955,7 +956,6 @@ Bit16u *AX;Bit16u CX; Bit16u ES;Bit16u DI;
>  #ifdef DEBUG
>                  printf("VBE *NOT* found mode %x\n",CX);
>  #endif
> -                result = 0x100;
>          }
>          
>          if (result == 0x4f)



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