Re: [RFC PATCH 1/2] efi: Make 'efi_enabled' a function to query EFIfacilities

[Tim Gardner]

On 01/03/2013 06:18 AM, Matt Fleming wrote:
> From: Matt Fleming <matt.fleming@xxxxxxxxx>
> 

snip

>  /*
> - * We play games with efi_enabled so that the compiler will, if possible, remove
> - * EFI-related code altogether.
> + * We play games with efi_enabled so that the compiler will, if
> + * possible, remove EFI-related code altogether.
>   */
> +#define EFI_BOOT		0x00000001 /* Were we booted from EFI? */
> +#define EFI_SYSTEM_TABLES	0x00000002 /* Can we use EFI system tables? */
> +#define EFI_CONFIG_TABLES	0x00000004 /* Can we use EFI config tables? */
> +#define EFI_RUNTIME_SERVICES	0x00000004 /* Can we use runtime services? */
> +#define EFI_MEMMAP		0x00000008 /* Can we use EFI memory map? */
> +#define EFI_64BIT		0x00000010 /* Is the firmware 64-bit? */
> +

Your use of test_bit() and set_bit() imply that these macros should be
bit numbers, not bit masks. It'll work until you define a mask with an
integer value greater then 31.

rtg
-- 
Tim Gardner tim.gardner@xxxxxxxxxxxxx
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