This fixes a build failure on ARCH=arm when CONFIG_EFI is set but
CONFIG_ACPI is not, because uefi.h declares iwl_uefi_get_sgom_table()
and iwl_uefi_get_uats_table() as dummy inline function, but uefi.c
contains the real (non-inline) implementation:

 drivers/net/wireless/intel/iwlwifi/fw/uefi.c:359:6: error: redefinition of 'iwl_uefi_get_sgom_table'
   359 | void iwl_uefi_get_sgom_table(struct iwl_trans *trans,
       |      ^~~~~~~~~~~~~~~~~~~~~~~
 In file included from drivers/net/wireless/intel/iwlwifi/fw/uefi.c:11:
 drivers/net/wireless/intel/iwlwifi/fw/uefi.h:294:6: note: previous definition of 'iwl_uefi_get_sgom_table' with type 'void(struct iwl_trans *, struct iwl_fw_runtime *)'
   294 | void iwl_uefi_get_sgom_table(struct iwl_trans *trans, struct iwl_fw_runtime *fwrt)
       |      ^~~~~~~~~~~~~~~~~~~~~~~
 drivers/net/wireless/intel/iwlwifi/fw/uefi.c:392:5: error: redefinition of 'iwl_uefi_get_uats_table'
   392 | int iwl_uefi_get_uats_table(struct iwl_trans *trans,
       |     ^~~~~~~~~~~~~~~~~~~~~~~
 drivers/net/wireless/intel/iwlwifi/fw/uefi.h:299:5: note: previous definition of 'iwl_uefi_get_uats_table' with type 'int(struct iwl_trans *, struct iwl_fw_runtime *)'
   299 | int iwl_uefi_get_uats_table(struct iwl_trans *trans,
       |     ^~~~~~~~~~~~~~~~~~~~~~~

I don't know how the driver works, and I do not know why the
CONFIG_ACPI check was added in the first place by commit c593d2fae592a
("iwlwifi: support SAR GEO Offset Mapping override via BIOS"), but
since it did not add the same #ifdef to uefi.c, my first guess is that
this piece of code shall be used even if ACPI is disabled.

Signed-off-by: Max Kellermann <max.kellermann@ionos.com>
---
 drivers/net/wireless/intel/iwlwifi/fw/uefi.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.h b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h
index 39053290bd59..8617fe8b65cd 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h
@@ -285,7 +285,7 @@ static inline int iwl_uefi_get_dsm(struct iwl_fw_runtime *fwrt,
 }
 #endif /* CONFIG_EFI */
 
-#if defined(CONFIG_EFI) && defined(CONFIG_ACPI)
+#if defined(CONFIG_EFI)
 void iwl_uefi_get_sgom_table(struct iwl_trans *trans, struct iwl_fw_runtime *fwrt);
 int iwl_uefi_get_uats_table(struct iwl_trans *trans,
 			    struct iwl_fw_runtime *fwrt);
-- 
2.39.2

> 
> I don't know how the driver works, and I do not know why the CONFIG_ACPI
> check was added in the first place by commit c593d2fae592a
> ("iwlwifi: support SAR GEO Offset Mapping override via BIOS"), but since it did
> not add the same #ifdef to uefi.c, my first guess is that this piece of code shall
> be used even if ACPI is disabled.
> 
> Signed-off-by: Max Kellermann <max.kellermann@ionos.com>
> ---
>  drivers/net/wireless/intel/iwlwifi/fw/uefi.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.h
> b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h
> index 39053290bd59..8617fe8b65cd 100644
> --- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.h
> +++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h
> @@ -285,7 +285,7 @@ static inline int iwl_uefi_get_dsm(struct iwl_fw_runtime
> *fwrt,  }  #endif /* CONFIG_EFI */
> 
> -#if defined(CONFIG_EFI) && defined(CONFIG_ACPI)
> +#if defined(CONFIG_EFI)
>  void iwl_uefi_get_sgom_table(struct iwl_trans *trans, struct iwl_fw_runtime
> *fwrt);  int iwl_uefi_get_uats_table(struct iwl_trans *trans,
>  			    struct iwl_fw_runtime *fwrt);
> --

Hi Max,

Thanks for your fix!
I think that I'd prefer Arnd Bergmans fix, looks cleaner to me.

Thanks!

> 2.39.2

Max Kellermann <max.kellermann@ionos.com> writes:

> This fixes a build failure on ARCH=arm when CONFIG_EFI is set but
> CONFIG_ACPI is not, because uefi.h declares iwl_uefi_get_sgom_table()
> and iwl_uefi_get_uats_table() as dummy inline function, but uefi.c
> contains the real (non-inline) implementation:
>
>  drivers/net/wireless/intel/iwlwifi/fw/uefi.c:359:6: error: redefinition of 'iwl_uefi_get_sgom_table'
>    359 | void iwl_uefi_get_sgom_table(struct iwl_trans *trans,
>        |      ^~~~~~~~~~~~~~~~~~~~~~~
>  In file included from drivers/net/wireless/intel/iwlwifi/fw/uefi.c:11:
>  drivers/net/wireless/intel/iwlwifi/fw/uefi.h:294:6: note: previous
> definition of 'iwl_uefi_get_sgom_table' with type 'void(struct
> iwl_trans *, struct iwl_fw_runtime *)'
>    294 | void iwl_uefi_get_sgom_table(struct iwl_trans *trans, struct iwl_fw_runtime *fwrt)
>        |      ^~~~~~~~~~~~~~~~~~~~~~~
>  drivers/net/wireless/intel/iwlwifi/fw/uefi.c:392:5: error: redefinition of 'iwl_uefi_get_uats_table'
>    392 | int iwl_uefi_get_uats_table(struct iwl_trans *trans,
>        |     ^~~~~~~~~~~~~~~~~~~~~~~
>  drivers/net/wireless/intel/iwlwifi/fw/uefi.h:299:5: note: previous
> definition of 'iwl_uefi_get_uats_table' with type 'int(struct
> iwl_trans *, struct iwl_fw_runtime *)'
>    299 | int iwl_uefi_get_uats_table(struct iwl_trans *trans,
>        |     ^~~~~~~~~~~~~~~~~~~~~~~
>
> I don't know how the driver works, and I do not know why the
> CONFIG_ACPI check was added in the first place by commit c593d2fae592a
> ("iwlwifi: support SAR GEO Offset Mapping override via BIOS"), but
> since it did not add the same #ifdef to uefi.c, my first guess is that
> this piece of code shall be used even if ACPI is disabled.
>
> Signed-off-by: Max Kellermann <max.kellermann@ionos.com>
> ---
>  drivers/net/wireless/intel/iwlwifi/fw/uefi.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

"wifi:" missing from title but I'm guessing Johannes can add that.

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