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Date: Mon, 12 Feb 2024 09:14:23 +0200
From: Kalle Valo <kvalo@...nel.org>
To: Max Kellermann <max.kellermann@...os.com>
Cc: miriam.rachel.korenblit@...el.com,  linux-wireless@...r.kernel.org,
  linux-kernel@...r.kernel.org,  ayala.barazani@...el.com
Subject: Re: [PATCH] iwlwifi/uefi: remove CONFIG_ACPI check

Max Kellermann <max.kellermann@...os.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@...os.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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