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

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Message-Id: <20201204165128.3747878-1-arnd@kernel.org>
Date:   Fri,  4 Dec 2020 17:51:20 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Hawking Zhang <Hawking.Zhang@....com>,
        John Clements <john.clements@....com>
Cc:     Arnd Bergmann <arnd@...db.de>, Lee Jones <lee.jones@...aro.org>,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] drm/amdgpu: fw_attestation: fix unused function warning

From: Arnd Bergmann <arnd@...db.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@...db.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