Re: [PATCH] x86/efi-bgrt: Don't ignore the BGRT if the 'valid' bit is 0

[Matt Fleming <matt-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>]

On Thu, 14 Jan, at 11:05:07PM, Môshe van der Sterre wrote:
> Unintuitively, the BGRT graphic is apparently meant to be usable if
> the valid bit in not set. The valid bit only conveys uncertainty
> about the validity in relation to the screen state.
> 
> Windows 10 actually uses the BGRT image for its boot screen even if
> not 'valid', for example when the user triggered the boot menu.
> Because it is unclear if all firmwares will provide a usable graphic
> in this case, we now look at the BMP magic number as an additional
> check.
> 
> Reviewed-by: Josh Triplett <josh-iaAMLnmF4UmaiuxdJuQwMA@public.gmane.org>
> Signed-off-by: Môshe van der Sterre <me-A/3C56C7qwM@public.gmane.org>
> ---
>  arch/x86/platform/efi/efi-bgrt.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)

Thanks, applied!