[PATCH] drm/amdgpu: fw_attestation: fix unused function warning

[PATCH] drm/amdgpu: fw_attestation: fix unused function warning

[Arnd Bergmann]

From: Arnd Bergmann <arnd@arndb.de>

Without debugfs, the compiler notices one function that is not used at
all:

drivers/gpu/drm/amd/amdgpu/amdgpu_fw_attestation.c:123:12: error: unused function 'amdgpu_is_fw_attestation_supported' [-Werror,-Wunused-function]

In fact the static const amdgpu_fw_attestation_debugfs_ops structure is
also unused here, but that warning is currently disabled.

Removing the #ifdef check does the right thing and leads to all of this
code to be dropped without warning.

Fixes: 19ae333001b3 ("drm/amdgpu: added support for psp fw attestation")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_fw_attestation.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fw_attestation.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fw_attestation.c
index e47bca1c7635..7c6e02e35573 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fw_attestation.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fw_attestation.c
@@ -130,7 +130,6 @@ static int amdgpu_is_fw_attestation_supported(struct amdgpu_device *adev)
 
 void amdgpu_fw_attestation_debugfs_init(struct amdgpu_device *adev)
 {
-#if defined(CONFIG_DEBUG_FS)
 	if (!amdgpu_is_fw_attestation_supported(adev))
 		return;
 
@@ -139,5 +138,4 @@ void amdgpu_fw_attestation_debugfs_init(struct amdgpu_device *adev)
 			    adev_to_drm(adev)->primary->debugfs_root,
 			    adev,
 			    &amdgpu_fw_attestation_debugfs_ops);
-#endif
 }
-- 
2.27.0

Re: [PATCH] drm/amdgpu: fw_attestation: fix unused function warning

[Alex Deucher]

On Fri, Dec 4, 2020 at 11:51 AM Arnd Bergmann <arnd@kernel.org> wrote:
>
> From: Arnd Bergmann <arnd@arndb.de>
>
> Without debugfs, the compiler notices one function that is not used at
> all:
>
> drivers/gpu/drm/amd/amdgpu/amdgpu_fw_attestation.c:123:12: error: unused function 'amdgpu_is_fw_attestation_supported' [-Werror,-Wunused-function]
>
> In fact the static const amdgpu_fw_attestation_debugfs_ops structure is
> also unused here, but that warning is currently disabled.
>
> Removing the #ifdef check does the right thing and leads to all of this
> code to be dropped without warning.
>
> Fixes: 19ae333001b3 ("drm/amdgpu: added support for psp fw attestation")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Applied.  Thanks!

Alex

> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_fw_attestation.c | 2 --
>  1 file changed, 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fw_attestation.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fw_attestation.c
> index e47bca1c7635..7c6e02e35573 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fw_attestation.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fw_attestation.c
> @@ -130,7 +130,6 @@ static int amdgpu_is_fw_attestation_supported(struct amdgpu_device *adev)
>
>  void amdgpu_fw_attestation_debugfs_init(struct amdgpu_device *adev)
>  {
> -#if defined(CONFIG_DEBUG_FS)
>         if (!amdgpu_is_fw_attestation_supported(adev))
>                 return;
>
> @@ -139,5 +138,4 @@ void amdgpu_fw_attestation_debugfs_init(struct amdgpu_device *adev)
>                             adev_to_drm(adev)->primary->debugfs_root,
>                             adev,
>                             &amdgpu_fw_attestation_debugfs_ops);
> -#endif
>  }
> --
> 2.27.0
>
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