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Re: [PATCH -next] efi: Do not include asm/efi.h if not needed

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On 10 January 2016 at 16:35, Guenter Roeck <linux@roeck-us.net> wrote:
> Commit f7d924894265 ("arm64/efi: refactor EFI init and runtime code
> for reuse by 32-bit ARM") adds an include of asm/efi.h to efi.c.
> This causes a build failure for ia64, where asm/efi.h does not exist.
>
> drivers/firmware/efi/efi.c:28:21: fatal error:
>         asm/efi.h: No such file or directory
>
> asm/efi.h does not define or declare anything used by efi.c, thus
> including it should not be needed.
>
> Fixes: f7d924894265 ("arm64/efi: refactor EFI init and runtime code for reuse by 32-bit ARM")
> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
> Cc: Will Deacon <will.deacon@arm.com>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>

This fixes ia64 but breaks ARM

drivers/firmware/efi/efi.c: In function ‘efi_mem_desc_lookup’:
drivers/firmware/efi/efi.c:291:3: error: implicit declaration of
function ‘early_memremap’ [-Werror=implicit-function-declaration]
drivers/firmware/efi/efi.c:291:6: warning: assignment makes pointer
from integer without a cast [enabled by default]
drivers/firmware/efi/efi.c:301:4: error: implicit declaration of
function ‘early_memunmap’ [-Werror=implicit-function-declaration]
drivers/firmware/efi/efi.c: In function ‘efi_config_parse_tables’:
drivers/firmware/efi/efi.c:404:7: warning: assignment makes pointer
from integer without a cast [enabled by default]
drivers/firmware/efi/efi.c: In function ‘efi_config_init’:
drivers/firmware/efi/efi.c:433:16: warning: assignment makes pointer
from integer without a cast [enabled by default]

> ---
>  drivers/firmware/efi/efi.c | 2 --
>  1 file changed, 2 deletions(-)
>
> diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
> index cffa89b3317b..027ca212179f 100644
> --- a/drivers/firmware/efi/efi.c
> +++ b/drivers/firmware/efi/efi.c
> @@ -25,8 +25,6 @@
>  #include <linux/io.h>
>  #include <linux/platform_device.h>
>
> -#include <asm/efi.h>
> -
>  struct efi __read_mostly efi = {
>         .mps                    = EFI_INVALID_TABLE_ADDR,
>         .acpi                   = EFI_INVALID_TABLE_ADDR,
> --
> 2.1.4
>

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[PATCH -next] efi: Do not include asm/efi.h if not needed Guenter Roeck <linux@roeck-us.net> - 2016-01-10 16:40 +0100
  Re: [PATCH -next] efi: Do not include asm/efi.h if not needed Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2016-01-10 18:10 +0100
    Re: [PATCH -next] efi: Do not include asm/efi.h if not needed Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2016-01-10 18:40 +0100
      Re: [PATCH -next] efi: Do not include asm/efi.h if not needed Guenter Roeck <linux@roeck-us.net> - 2016-01-10 20:50 +0100
        Re: [PATCH -next] efi: Do not include asm/efi.h if not needed Guenter Roeck <linux@roeck-us.net> - 2016-01-10 20:50 +0100

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