Re: [PATCH] efi: fix missing prototype warnings

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On Tue, 16 May 2023 at 22:16, Arnd Bergmann <arnd@xxxxxxxxxx> wrote:
>
> From: Arnd Bergmann <arnd@xxxxxxxx>
>
> The cper.c file needs to include an extra header, and
> efi_zboot_entry needs an extern declaration to avoid these
> 'make W=1' warnings:
>
> drivers/firmware/efi/libstub/zboot.c:65:1: error: no previous prototype for 'efi_zboot_entry' [-Werror=missing-prototypes]
> drivers/firmware/efi/efi.c:176:16: error: no previous prototype for 'efi_attr_is_visible' [-Werror=missing-prototypes]
> drivers/firmware/efi/cper.c:626:6: error: no previous prototype for 'cper_estatus_print' [-Werror=missing-prototypes]
> drivers/firmware/efi/cper.c:649:5: error: no previous prototype for 'cper_estatus_check_header' [-Werror=missing-prototypes]
> drivers/firmware/efi/cper.c:662:5: error: no previous prototype for 'cper_estatus_check' [-Werror=missing-prototypes]
>
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
>  drivers/firmware/efi/cper.c            | 1 +
>  drivers/firmware/efi/libstub/efistub.h | 3 +++
>  include/linux/efi.h                    | 2 ++
>  3 files changed, 6 insertions(+)
>
> diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c
> index 35c37f667781..75715c7be34a 100644
> --- a/drivers/firmware/efi/cper.c
> +++ b/drivers/firmware/efi/cper.c
> @@ -25,6 +25,7 @@
>  #include <acpi/ghes.h>
>  #include <ras/ras_event.h>
>  #include "cper_cxl.h"
> +#include "../../acpi/apei/apei-internal.h"

Yuck. Could we move the missing definitions to linux/cper.h instead?

>
>  /*
>   * CPER record ID need to be unique even after reboot, because record
> diff --git a/drivers/firmware/efi/libstub/efistub.h b/drivers/firmware/efi/libstub/efistub.h
> index 67d5a20802e0..54a2822cae77 100644
> --- a/drivers/firmware/efi/libstub/efistub.h
> +++ b/drivers/firmware/efi/libstub/efistub.h
> @@ -1133,4 +1133,7 @@ const u8 *__efi_get_smbios_string(const struct efi_smbios_record *record,
>  void efi_remap_image(unsigned long image_base, unsigned alloc_size,
>                      unsigned long code_size);
>
> +asmlinkage efi_status_t __efiapi
> +efi_zboot_entry(efi_handle_t handle, efi_system_table_t *systab);
> +
>  #endif
> diff --git a/include/linux/efi.h b/include/linux/efi.h
> index 7aa62c92185f..571d1a6e1b74 100644
> --- a/include/linux/efi.h
> +++ b/include/linux/efi.h
> @@ -1338,4 +1338,6 @@ bool efi_config_table_is_usable(const efi_guid_t *guid, unsigned long table)
>         return xen_efi_config_table_is_usable(guid, table);
>  }
>
> +umode_t efi_attr_is_visible(struct kobject *kobj, struct attribute *attr, int n);
> +
>  #endif /* _LINUX_EFI_H */
> --
> 2.39.2
>



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