linux-kernel - [PATCH] drm/msm: fix building without debugfs

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Message-Id: <20180226094941.2783405-1-arnd@arndb.de>
Date:   Mon, 26 Feb 2018 10:49:26 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Rob Clark <robdclark@...il.com>,
        Jordan Crouse <jcrouse@...eaurora.org>
Cc:     Arnd Bergmann <arnd@...db.de>, David Airlie <airlied@...ux.ie>,
        Nicolas Dechesne <nicolas.dechesne@...aro.org>,
        Archit Taneja <architt@...eaurora.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH] drm/msm: fix building without debugfs

The adreno driver stopped building when CONFIG_DEBUGFS is disabled:

drivers/gpu/drm/msm/adreno/adreno_device.c: In function 'adreno_load_gpu':
drivers/gpu/drm/msm/adreno/adreno_device.c:153:16: error: 'const struct msm_gpu_funcs' has no member named 'debugfs_init'
  if (gpu->funcs->debugfs_init) {
                ^~
drivers/gpu/drm/msm/adreno/adreno_device.c:154:13: error: 'const struct msm_gpu_funcs' has no member named 'debugfs_init'
   gpu->funcs->debugfs_init(gpu, dev->primary);
             ^~

This adds an #ifdef around the code that references the hidden
pointer.

Fixes: 331dc0bc195b ("drm/msm: add a5xx specific debugfs")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/gpu/drm/msm/adreno/adreno_device.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
index f07d3ec7d77b..8e0cb161754b 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_device.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
@@ -164,11 +164,13 @@ struct msm_gpu *adreno_load_gpu(struct drm_device *dev)
 		return NULL;
 	}
 
+#ifdef CONFIG_DEBUG_FS
 	if (gpu->funcs->debugfs_init) {
 		gpu->funcs->debugfs_init(gpu, dev->primary);
 		gpu->funcs->debugfs_init(gpu, dev->render);
 		gpu->funcs->debugfs_init(gpu, dev->control);
 	}
+#endif
 
 	return gpu;
 }
-- 
2.9.0